1,SOHC China CNC machining parts Manufacturer
(single top camshaft engine) the type of engine classified according to the number of camshaft positions (SSOHC) denotes single top camshaft engine, suitable for 2 valve engine.
Double-top camshaft engine means double-top camshaft engine, suitable for multi-valve engine. Usually there are two valves per cylinder, and in recent years there have been 4-valve and 5-valve engines. This will undoubtedly open up a way to improve the intake efficiency power of the engine at high speed. This kind of engine is suitable for high speed engines and can reduce the fuel consumption at high speed. China CNC machining parts Manufacturer
(turbocharged) or turbocharged, for short T, usually marked at the rear of the car with the words 1.8T / 2.8T. turbocharged with single turbocharged and double turbocharged. By turbocharging, we usually refer to exhaust gas turbocharging, which generally uses exhaust gas to drive the impeller to drive the pump wheel and to feed more air into the engine, thereby increasing the engine’s power. At the same time reduce engine fuel consumption.
(variable valve phase and valve lift electronic control system). The VTEC, developed by Honda, is the first valve control system in the world that can control both the opening and closing time and the lift of the valve. The biggest difference between an i-VTEC. I-VTEC engine and an ordinary engine is that two sets of valves drive the cams at medium and high speeds. In addition, the engine can automatically change the opening time and lifting degree of the valve according to the driving conditions, that is, changing the air intake and exhaust, thus increasing the power. The purpose of reducing fuel consumption.
(intelligent variable valve timing and lift systems) i-vtec. the system is an abbreviation for Honda’s Intelligent variable Valve timing system. The latest Honda sedan engines are generally equipped with i-vtec systems. Honda’s i-vtec system continuously adjusts valve timing. The principle is that when the engine changes from low speed to high speed, the computer automatically presses the oil toward the intake camshaft to drive the small turbine in the gear. Under the action of pressure, the small turbine rotates at a certain angle relative to the gear shell, making the camshaft rotate forward or backward in a range of 60 degrees, thus changing the opening time of the inlet valve. The purpose of continuously adjusting valve timing is achieved.
(continuous variable Valve timing system) Korea’s automobile industry has never been known for its advanced technology, so much of the technology used is based on the experience of Germany, Japan, and other countries. CVVT is developed on the basis of VVT-i and i-VTEC. Taking the CVVT engine of modern automobile as an example, it can control the valve opening and closing at any time according to the actual working conditions of the engine. Fuel is burned more fully to boost power and reduce fuel consumption. But the CVVT does not control the valve lift, which means that the engine only changes the suction and exhaust time.
(continuous variable valve timing engine) this system adjusts the phase of the engine cam through the equipped control and execution system, thus making the valve open. The closing time varies with the engine speed to improve the aeration efficiency and increase the engine power.
(intelligent variable timing system) VVT-i is Toyota’s unique engine technology, has been very mature, domestic Toyota cars in recent years. Similar to Honda’s VTEC principle, the system features the ability to control intake camshafts according to the engine’s state. The timing of gas distribution is optimized by adjusting the camshaft rotation angle to obtain the best timing of gas distribution, thus improving torque and fuel economy in all speed range. Thus, the performance of the vehicle is improved effectively.
9, double VVT–i
(double intelligent variable valve timing engine) double VVT-i refers to the air intake system of engine control respectively. When anxious acceleration, the VVT-i will control the intake air intake time, and improve the valve lift, and emission control VVT-i will delay the exhaust time, this effect as a turbocharger small, can effectively improve the engine power. At the same time, due to the increase in air intake, but also makes the gasoline combustion more completely, to achieve low emissions. China CNC machining parts Manufacturer
(dual variable valve timing, variable intake system of the engine) the genesis (Rohens) basic configuration, V-6 Lambda engine in the intake and exhaust camshaft using the dual variable valve timing (D-CVVT) technology, and equipped with a new variable intake system (VIS), increase the intake quantity of the cylinder, so as to improve the fuel efficiency. Configuration 3.8 liter V-6 engine power of 290 horsepower, the output power is strong, but did not affect the environmental protection and low emission control (ULEV). The characteristics of this one, with overdrive Aisin 6 speed automatic transmissions contributed to the transmission performance of the transmission ratio is broad, smooth. It is these ensure the genesis (Rohens) strong power and excellent fuel economy.
(turbo direct injection turbocharged engine TDI Turbo Direct English) is the abbreviation of Injection turbo direct injection (diesel engine). In order to solve the SDI people is congenitally deficient, the installation of a diesel engine turbocharger, the inlet pressure increased, the compression ratio is generally above 10, so that it can be in speed under the condition of the lower reach large torque, and because the full combustion of harmful particles content, but also greatly reduce the emissions of TDI technology to make the fuel through a high pressure injector of direct injection into the cylinder, because the piston top shape is a bowl shaped design of a concave type, it will form a fuel mixture the spiral in the cylinder. Bora TDI equipped with the Volkswagen Group’s first direct injection turbocharged diesel engine (TDI) technology is very advanced, and uses many advanced techniques, such as injection pump system, Adjustable vane turbocharger and so on are applied for the first time in the domestic car. Bora TDI using the latest high-pressure fuel injection technology – pump injection system. This system makes the diesel mixed with the air more fully, more thorough combustion; the oxidation catalytic reactor, greatly reducing CO, HC. The particle emission, the emission of CO2 with the same displacement gasoline ratio is decreased by 30%. addition, EGR system, greatly reduces the production of NOx emission targets to meet Euro 3 standard.Volkswagen diesel engine “TDI” logo, is recognized worldwide as the most successful of the diesel engine.
(diesel engine) hydraulic distribution pump timing device by a timing driven piston roller movement control the timing. When the high pressure chamber and the pump chamber is communicated with the piston, pump pressure will increase with the increase of speed, high pressure piston cavity pressure will increase with the increase of speed, fuel injection timing control system of tandem electric Jetta in advance. N108 between high and low pressure valve piston cavity, duty ratio control of high and low pressure chamber pressure, injection timing changes, the duty ratio of pressure difference is small, when the later, and the needle lift sensor G80 detection of fuel injection timing, the timing of fuel injection. The closed-loop control of GDF-P diesel engine is more popular.
(engine direct injection stratified combustion) FSI is a new technology in the field of gasoline engine, which means fuelstratifiedinjection. High pressure fuel supply technology similar to the diesel engine. It is equipped with a fuel supply system according to the need of control, then the pressure required to provide a piston pump, fuel injector fuel in the final the most appropriate time directly into the combustion chamber. Through the design of the combustion chamber shape, the periphery of the spark plug will have a richer mixture, while other areas are thin mixture gas, to ensure the smooth ignition conditions as far as possible to achieve lean combustion, which is the essence of stratified combustion.FSI at the same level is significantly higher than the engine power, fuel consumption can be reduced by about 15%.
(turbocharged fuel stratified injection engine) this more T word than the FSI stands for turbocharged Turbocharger. And the engine itself does add a turbocharger to the FSI engine, which uses the high temperature and high pressure of the exhaust to drive the exhaust turbine around at high speed, driving the intake turbine into compressed air. Increase air density, and computer control to increase fuel injection, with high density of air intake. Therefore, engine efficiency can be improved under constant displacement. FAW-VW and Shanghai Volkswagen refer to their 1.4TFSI and 1.8TFSI engines. Both are known as 1.4TSI and 1.8TSI, which is highly irresponsible. Also, vendors are trying to avoid any objections to the TFSI acronym TSI. They explained this as follows: “since we have traditionally used three words as the term for engine specific technology in the system, we call the TFSI for short, where T stands for turbocharging.” SI stands for direct injection technology “. Domestic Maiteng. The latest TSI engines for models such as speeden are actually not the same as the TSI. The Maiteng 1.8 TSI and the 1.4 TSI about to be installed on the speedup actually emasculate the engine. Pressure and fuel layering. Of course. This is also after localization in the oil and cost considerations. Because, a mechanical turbocharged kit less than 15,000 yuan, 50,000 km need to be replaced once. Plus more than 100,000 kilometers need to replace the more expensive turbocharged.
(mechanical turbocharged and fuel Direct injection engine) TSI (turbocharged fuel stratified injection engine) is a very clever design. It is actually put into a turbocharger (Turbocharger) and a mechanical supercharger (supercharger). The T in .TSI is not Turbocharger but Twincharger (double supercharged). The turbocharged engine has a power gap at both lower and higher speeds. To further improve the efficiency of the engine, add a mechanical booster and allow it to increase the intake pressure at low speed. The turbocharger can be larger in size to compensate for the power gap at high speed. In order to achieve a low to high speed of the entire segment of the excellent dynamic performance.
16, continuous variable valve phase engine
A continuous variable valve phase drive device for an engine includes a valve fitted with a valve spring, a rocker arm that drives the valve to reciprocate, and a rotating cam that drives the swing of the rocker arm. The cam is a multi-condition cam which can change the valve lift and the opening and closing time. The shape surface of the multi-condition cam is as follows: one end is a low-speed low-load cam profile, the other is a high-speed high-load cam profile surface. Between the low speed and small load cam profile and the high speed and large load cam profile surface is a smooth transition medium speed load cam profile surface. The multi-condition cam is connected with a servo motor which can make the multi-working condition cam move along its axial direction. Because the profile of the multi-condition cam is continuous and smooth, stepless control can be carried out according to the need to realize the continuous variable valve phase. In addition, the profile of the multi-condition cam covers all kinds of working conditions of the engine. Therefore, the utility model can well meet the needs of the engine under variable working conditions.
The AVS refers to the variable valve lift system, also known as the two-stage variable timing control system. Generally speaking, the engine equipped with such a system will save a lot of fuel and energy. At the same time increase horsepower. This technology is widely used on Audi.
(variable inlet system) under the control of PCM, when the engine power output timely open VAD port (more open one port, equivalent to larger port caliber). This technology is widely used in Mazda system.
(variable intake manifold system) under the control of PCM, maintain high torque in the range of small load and low speed to large load and high speed. Working principle: change the length of effective intake manifold. The flow inertia of inlet airflow is effectively controlled so that the frequency of flow pressure wave and the frequency of inlet valve are coincided in different working conditions. In fact, the principle of medium inertial harmonic supercharging is used to realize the maximum air intake of the engine. When the engine speed is less than 4400 rpm. The VIS does not work and the vis valve is closed and the airflow path is longer; When the engine speed is greater than 4400 rpm, the vis valve is open and the flow path is short. In this way, it can meet the demand of air volume in different working conditions. China CNC machining parts Manufacturer
(variable eddy current control system) under different water temperature and rotational speed the intake manifold open different opening to meet the engine air requirements under different conditions. Principle: in the same working condition. Different VTCS valve opening makes the flow velocity into the engine change to form a vortex which is often referred to as the vortex. Especially when the engine starts at low temperature and the engine is in low load, the mixture is not good in atomization, combustion is not sufficient, and emissions are not good. In order to improve the atomization level of gasoline at low temperature and the emission level of engine, the emission level of Mazda 6 can reach or exceed the Euro ⅲ standard. And when the engine speed is less than 3750 turn, the passage area of the intake pipe is reduced. With the further increase of water temperature, the opening of the VTCS valve is completely opened, and the area of the inlet pipe reaches the maximum.
(electronic solar term door system) as the name implies it is not by the throttle cable control inlet duct opening but the use of DC motor through reducer. To automatically realize the function and work process: it has basic functions of the ordinary solar term door, its role is to open the intake manifold in tube channel, open the different degrees of different conditions in general, the car door is driven by the gasanchor solar term by the foot pedal control. But the pull control door in the solar term rapid acceleration and other special conditions with an air inlet hysteresis phenomenon, namely in the rapid acceleration and other special conditions, the door opening signal through the solar term valve position sensor section has been sent, but the actual the air entering the cylinder and did not follow up, and the door is in the solar term under airflow disturbance is not very stable, so the amount of air is not stable, acceleration is not ideal and unstable. The electron gas The door according to the solar term door position signal, PCM direct drive DC motor for rapid response, timely solar term door open required opening, and electronic door locking mechanism of the solar term reduction in itself, will not fluctuate because of air disturbance, so as to ensure the air intake and engine speed control advantages: stability. The way of fast response, can ensure timely supply air volume in the corresponding conditions. Most of the air volume; the control accuracy is high, the stability is good.
(control VVT system) we know the opening and closing time determines engine air intake quantity of inlet valve, intake air quantity average car is only related to the speed of the engine, the intake air at a certain speed it is the intake valve open and close the main opening is certain. The intake of modern car control in order to further improve the performance of the engine, the engine power needs to be integrated, according to the speed and load signal, more scientifically control the intake valve opening and closing time, to ensure that the engine can achieve the maximum amount of intake in different conditions, to play the best performance of the engine. This paper consists of: Automotive Technology Division > Edit looking, sorting and forwarding, remember auto1950, WeChat public, very worthy of attention. Function: under different conditions by PCM automatic adjustment of the intake valve opening and closing time, In order to ensure maximum air intake of the engine. The principle and the working process: it is issued through the PCM duty cycle of the signal, with the engine operating conditions, the pressure control valve of the hydraulic control circuit is open to varying degrees, and then control the intake camshaft to change the rotation angle is different, the change of inlet valve opening and closing time. Change the size of the air intake of the engine. The door is open the solar term PCM under various control signals according to certain logic function, to achieve the perfect control of the inlet.
(variable swirl control system) TSCV controls the combustion of the combustion chamber to ensure the stable combustion of the engine when it is undercooled or underloaded. The result is better energy output and minimization of emissions.
(cooling technology in turbocharger) Chery 1.9D TCI diesel engine, integration of a number of advanced engine technology, at the same time with the gasoline engine and diesel engine clean, quiet economic power. These technologies include: TCI (exhaust gas turbocharged) technology, without changing the amount of engine exhaust next, the maximum increase in engine power and torque; high pressure common rail direct injection technology, the intake camshaft direct driven high pressure pump, fuel injection into the pre injection, main injection and post injection in three stages, then the fuel injection process of combustion, reducing gas combustion temperature, reduce the production of NOx, CO, PM by fully oxidation, reduction of CO, the generation of PM, inhibition of carbon smoke; EGR (EGR) system, reduce the oxygen content of the mixture in the cylinder, thereby reducing the combustion temperature, combustion process, inhibit the formation of NOx is used; The structure of TVD (torsional vibration damper) and dual mass flywheel and so on. The exhaust emissions of this engine can meet the requirements of European IV standard, and the fuel consumption is also up to the international advanced level, which is called the new generation green power.
(vertical vortex rarefied combustion engine) BYD’s MVV vertical swirl lean burn technology engine is similar to the general cylinder direct injection engine.
(VICS variable inertia VICS engine) engine intake system of the hippocampus. Thus the torque characteristics of high both in the whole speed range; VICS system can ensure that the entire engine speed range from low speed to high speed, maintain high output, high torque. This system is based on the different engine speed and torque demand. Close the control valve to adjust the indoor air intake manifold, path length, increase the air intake efficiency of the engine. The best device of this system, the engine speed can be increased to at least 2.2% of the torque output.
(natural gas engine) CNG natural gas engine tail gas purifier is generally composed of two parts, that is, honeycomb ceramic catalyst and metal shell. The main principles are as follows: the emission of tail gas is passed through the honeycomb ceramic catalyst, the active components of the catalyst are mainly rare earth metal oxides, precious metals and transition metals at 200 ℃ and above 300 ℃. Can be fully catalytic reaction, the harmful components in the tail gas, such as COHCOHCOHCONOX, and so on, can be converted into non-toxic water, carbon dioxide and nitrogen. A. The core of the key technology project is the CNG engine exhaust gas purification technology, which belongs to the ternary purification catalyst technology. It is the main method to control the exhaust gas of CNG engine. At present, it is mainly used in taxis and some models.
NICS and C-VTC are Nissan’s technology. Nics technology is that the engine air filter has two intake pipes. The inductor can automatically open and close the valve in the main intake pipe according to the engine speed, thereby improving the intake efficiency. This technique is similar to the “variable intake manifold” commonly used in Audi A6 engines, which reduces the intake noise at medium and low speeds and increases the power output at high speeds. C-VTC ‘s full name is Continuously Variable Valve Tining Contorl@@. Continuous variable Valve timing) is an upgraded version of VTC. The technology is similar to Honda’s i-VTEC-VTEC upgrade. C-VTC controls the best time to open and close the valve by installing a clutch on the front end of the engine camshaft. To improve combustion efficiency. C-VTC is a relatively advanced engine technology.
(double variable valve timing engine) VVT means variable valve timing. We know that the general engine inlet and outlet doors open and close rely on the mechanical timing mechanism. Opening and closing at the corresponding position of the crankshaft angle is independent of the engine speed and load. That is to say, the opening and closing time of the door is corresponding to the rotation position of the crankshaft regardless of the rotational speed. Now the engine technology to pursue perfection requires that the optimal performance can be achieved at any load state and rotational speed. So some people have developed a mechanism that can change the valve phase. This technology is achieved by hydraulic or electronic control. DVVT and CVVT are both technologies, where DVVT refers to double variable valve timing, and its valve opening phase has two moments. Can be opened in position 1 or open in position 2, can be adjusted according to speed, load. CVVT is a continuous variable valve timing. It can be adjusted continuously between two limiting phases in the allowed valve phase, which should be said to achieve better control. But must have the very high control precision. Toyota propagandizes the VVT-i to belong to CVVT.At present the Ecotec DVVT is widely used in the Buick series.
(intelligent dual valve variable intake control engine). EVIC-III intelligent dual valve variable intake control technology is used to improve fuel utilization rate 1 variable valve timing technology: that is to say it can vary with engine speed load water temperature and other operating parameters. At the same time, the optimized fixed valve superposition angle, the engine power and torque output will be more linear, at the same time, the power output of high and low rotational speed will be taken into account. The engine can achieve the highest efficiency at high and low speed to reduce emissions and save fuel. 2 as an inertial variable intake system, by changing the shape of the intake manifold length, the low speed of the long intake pipe. Ensure air density and maintain low rotational power output efficiency; High switching to short intake manifold, accelerating the speed of air entering the cylinder, enhancing the flow inertia of inlet air flow, ensuring the intake volume of high rotation speed, so as to take into account the performance of each section of engine speed. After installing VIS. The flow inertia and intake efficiency of the engine inlet air flow have been enhanced, thus increasing the torque and reducing the fuel consumption. This technology is widely used in the Roewe series models.
(variable Camshaft and variable intake Manifold engine) Lotus CamPros, combined by Proton and Lotus Engineering to pursue high performance. The engine developed for the demand of bottom fuel consumption and bottom emission, also because of this engine, Proton has formally entered the field of independent research and development. And has world-class technology to produce the next generation of engines, mainly to allow the engine to have a better “breath” to improve the CamPro unique bottom torque loss problem, and improve the performance of urban driving fuel consumption. At the same time, the ignition system is upgraded to an independent ignition system to obtain more accurate ignition control, to enhance the low speed power, to meet the Euro IV standard, and to upgrade the ECU in an all-round way. The engine applies variable camshaft and variable intake manifold technology.
(variable displacement engine) Chrysler developed HEMI engine equipped with MDS system, the system can automatically switch between 4 cylinder and 8 cylinder models. This technique is most suitable for use in multi cylinder engine, does not affect the acceleration stimulation driver to pursue large displacement models, and effectively reduces the fuel consumption when the traffic jam for example a conventional 8 cylinder engine in the use of this technology, is loaded with two independent 4 cylinder engine, according to the needs of drivers run an engine and let another rest.
33, multi segment variable intake manifold Technology
The intake pipe length is controlled by computer to provide large torque when low speed is satisfied, and high power is provided at high speed.
(an engine) in Italy, Brazil, Turkey and other countries have production, the annual output of millions of units, is a mature technology, economic engine stable performance, widely used in all kinds of economic type of car. Fiat to load in the Fiat Palio car 188A4000 engine as an example, the engine exhaust 1242ml, compression ratio 9.5 + 0.2 1. engine control system for Italy ECU company Magneti Marelli IAW maruili? 59F multi-point EFI system. Using electrostatic ignition, sequential injection, no return oil supply system and oxygen sensor technology, the engine emission level easily over Europe 2 standard and improve vehicle safety. This system has the following functions adjusting the fuel injection timing control of ignition advance angle control electronic radiator fan, control and management of idle control, cold start compensation, self diagnosis and self-learning, and It has a lame function.
(variable displacement engine) to be fitted in the Ford Motor Co after the production of cars and trucks, to further improve the fuel economy of the vehicle. This engine technology is the most suitable for multi cylinder engine use. For example, 12 cylinder engine, by using this technique, is installed two independent 6 cylinder engine, according to the driver the need to run an engine, while the other one in the idle state. In this way, you can adjust the amount of exhaust of the engine at any time, thus reducing the fuel consumption.
(intelligent variable valve timing and lift control system) MIVEC control mechanism is the intake camshaft phase through ECU issued precise instructions: ECU engine air intake in various driving automatic search for a corresponding engine speed, throttle position condition, solar term and cooling water temperature optimum valve timing, and camshaft timing control hydraulic control valve, and the signal of each sensor to sense the actual valve timing, and then execute the feedback control, system error compensation, achieve the best timing position, so as to effectively improve the power and performance of the car, reduce fuel consumption and exhaust emissions. This technology is widely used in MITSUBISHI cars.
37 double VANOS Valvetronic
(double camshaft variable valve timing engine) in 1992, BMW launched the Valves stepless Regulation Management (VANOS) double Camshaft variable Valve timing system. Is the world’s first technology to be used on BMW M3. The advantage of this control system is that it can be based on the engine running state. The valve timing of intake valve and exhaust valve is adjusted stepless by precise angle control of camshaft, and is not affected by throttle pedal position and engine speed. This means that sufficient torque can be provided at lower engine speeds, while optimal power can be achieved in high speed ranges. The Double-VANOS double camshaft variable valve timing system can greatly reduce the unburned residual gas, thus improving the idle performance of the engine.
(Multi-Point fuel injection engine) the so-called MFI, originally intended for Multiple Fuel injection. The 2.0MFI engine is based on the German AZM engine and combines many factors, such as Chinese road, climate, fuel quality and so on. Redo carefully matched a good piece of work.
39 C VTC
(continuous variable valve timing intelligent control system) C-VTC continuous variable valve timing intelligent control system technology is basically the same as VVT.
Infiniti VVEL Infiniti Infiniti Infinite variable intake lift system and CVTCS continuously variable intake timing system. It also produces the best kinetic energy and combustion efficiency. The device optimizes the efficiency by means of the valve lift continuous variable VELL technology, and then achieves the power and response. The balance between fuel efficiency and emissions. By constantly changing the valve lift and, in turn, changing the volume of air in the combustor. Makes the combustion phase more powerful and increases torque and power. The best reason is that the valve controls the intake stroke rather than the traditional butterfly valve. So the direct and fast response to throttle input. VVEL technology improves fuel economy compared with the standard valve lift system. The precise transformation of the ECU can help the engine power and torque to “expand” step by step, thus providing the acceleration of the “formation wave” rather than the peak power.
(variable cylinder management system) Honda VCM variable cylinder management system technology, the VCM system used in the V6 i-VTEC engine is first used in the non hybrid accord models, a new generation of VCM system in the three cylinder, four cylinder and six cylinder switch working mode, previously only in the three cylinder and four cylinder working mode switch. (Automotive Technology Division welcomed the attention < > auto1950) VCM system can make the new accord at the start, to ensure that all six cylinders work any accelerating or climbing to a high power output. In the medium speed cruise and low engine load, running for only one cylinder group. The three cylinder, the rear cylinder group stopped working. In the medium speed, high speed cruising and ramp driving, the engine will use 4 cylinders to operate, namely the front cylinder group on the left and middle cylinder work, rear cylinder group On the right side and the middle cylinder work. A new 3.5 liter V6 engine, using Honda’s most advanced VCM variable cylinder management technology of.VCM system in 3 cylinder, 4 cylinder and full automatic switching 6 cylinder working mode, the vehicle starting, accelerating or climbing any need high power output, all 6 the cylinder to work; in the medium speed cruise and low engine load, the system running for only one cylinder group, namely the 3 cylinder; in moderate acceleration, cruise speed and slope when driving, the engine will use 4 cylinders to operate, thereby greatly reducing the fuel consumption. The 3.5L V6 is not only the most power so far strong Honda engine, the fuel consumption is 3 lower than the previous generation models accord 7%.
42, reverse engine
Fawkes duratec – he anti floating Aluminum Alloy engine, using Aluminum Alloy casting material, anti floating design, maximum power up to 104kw, maximum torque of 180n – M (2.0L engine) , VIS (variable intake system) with variable inertia intake device, plastic intake manifold length, showing accelerated agile operation smooth, efficient advantages of power level and low noise low fuel intake effect.
43, horizontal opposed engine
The average distribution of engine piston in the crankshaft on both sides, left and right movement in the horizontal direction. The overall height of the engine is reduced, shorten the length of the center of gravity is reduced, the vehicle is more stable and the engine is installed on the center line of the vehicle on both sides of the piston, the torque generated offset, greatly reduce the vibration of the vehicle, the engine speed will be greatly improve and reduce the noise.
(lean combustion technology) is i-DSI dual spark plug ignition, it can improve the combustion efficiency. By improving the engine air-fuel ratio, the air-fuel ratio is greater than the theoretical air-fuel ratio under the condition of numerical combustion gas mixture. Let the rare cylinder lean combustion technology, although there is no Uchi Nao advanced, but compared with the straight jet engine for low cost.
(gasoline direct injection engine) through lean combustion technology MITSUBISHI GDI engine, the fuel consumption is reduced to 20%-35%, to reduce carbon dioxide emissions by 20%, and the output power than the same displacement engine 10%. ordinary cylinder direct injection technology is a branch of lean combustion technology. And the general difference is that the maximum engine direct injection the system of it. In fact, GDI is not what fresh technology, many years ago, many diesel engine uses this technology to design, and apply it to a gasoline engine, belonging to a few years thing. GDI technology has two major advantages: 1, the engine in spark ignition before the gasoline is injected directly into the combustion chamber pressure, while the precise control of ECU, the mixed gas stratified combustion gas mixture. This technique allows near the spark plug is relatively concentrated, away from the spark Mixed gas plug is relatively thin, so as to achieve more effective “thin” ignition and stratified combustion. 2, because gasoline is directly is injected into the cylinder, and the transmission of the outer cylinder injection compared to mixed gas without solar term valve, so the valve can reduce the air resistance of solar term mixed gas produced. China CNC machining parts Manufacturer
(cylinder injection engine) the fuel is injected into the intake duct. In order to make gasoline is injected into the intake pipe after sufficient time with air injector and valve at a distance, the gasoline and air mix in this space, and then was introduced into the cylinder during combustion. The design of this tradition, if the gasoline direct injection into the cylinder, is bound to cause the air and gasoline do not have enough time to mix, this mixture of gases, obviously cannot satisfy the demand of the engine ignition. GDI engine is the first to solve the problem of the machine.
(direct injection engine) IDE still uses the air and fuel lean mixture, but also increase the amount of exhaust gas recirculation EGR valve.EGR is the abbreviation of Recirculation Exhaust Gas, translated into Chinese is the exhaust gas recirculation means. This technology can reduce fuel consumption, and effectively reduce the combustion temperature and this, it is effective to solve the problem of GDI engine emission source. As everyone knows, the air is mainly composed of nitrogen, oxygen, carbon dioxide and other inert gas composition. The nitrogen accounted for the largest proportion is a very stable gas, normally it is difficult to direct oxidation of oxygen. But if in the case of high temperature and pressure, nitrogen is usually very stable easily reacts with oxygen to produce nitrogen oxides is very harmful. The ordinary engine, including the above mentioned GDI engine, the At the time of normal work, the cylinder working environment is in a state of high temperature and high pressure so that the air and fuel mixture gas after combustion can easily produce nitrogen oxides. The GDI engine, the problem is particularly prominent. Due to the compression engine with direct injection in cylinder is usually higher than the design. The cylinder pressure is greater than the ordinary engine, making it easier to produce nitrogen oxides. We all know that the NOx emission of diesel engine is usually much higher than the gasoline engine, mainly because of the high compression ratio of the diesel engine’s sake. In case of not reducing the pressure (because the necessary means to improve the efficiency of the engine is high compression ratio the), to reduce emissions of nitrogen oxides is only by reducing the cylinder combustion temperature.IDE EGR engine exhaust gas recirculation system is through a part of discharge The cylinder exhaust gas into the intake pipe again with fresh air and fuel combustion, to reduce the temperature of the combustion chamber. We know that the end is no longer burning gas combustion, exhaust gas is introduced into the cylinder, will occupy the effective part of the cylinder body product, the effect is equivalent to the displacement of the engine, it can effectively reduce the temperature of combustion of natural gas, and natural emission is reduced.
(suction type variable timing cam i-VCT engine), also called variable intake cam timing system, can be used in the engine speed range above 90% 2000rpm output to 5000rpm of torque, to ensure the continuity of the.VVT – I engine, variable valve timing system, emphasis on low speed rotor characteristic, but in fact TOYOTA the VVT – I below 2000rpm when the torque is not huge, low speed high torque gear driving more sense of inadequacy. This is because the range of VVT – I operation does not cover the low speed, can only rely on the gear and the gear of TOYOTA. With too much emphasis on driving comfort, also led to the integration of the car driving and no passion at all. But the start of the acceleration phase momentum is good, which is specially tuned to meet the city driving. The new third generation Ford Mondeo equipped with DURATEC-HE2.3 inline four cylinder 16 valve double overhead cam The shaft aluminum alloy engine uses i-VCT advanced technology, such as variable intake timing and cam timing, to achieve the euro IV standard. Compared with the same grade products, it is more economical at low speed and more abundant in power output at high speed.
(Cadillac SIDI intelligent direct injection engine) engine cylinder from intelligent direct injection, variable valve timing electronic double D-VVT and the new ECM engine management module. The structure of SIDI mode of direct injection engine were greatly changed, compared with the original injected into the intake manifold type SIDI engine multi point injection system replace variable valve cylinder direct injection system, which will be implanted in the cylinder nozzle, the fuel spray into the cylinder through the high pressure, and mixed air ignited, so as to realize the lean combustion in cylinder, so as to enhance the efficiency of the motor. At the same time also has the emissions of excellent fuel economy and lower also. And in cylinder direct injection by allowing a higher compression ratio (SIDI compression ratio as high as 11.1:1), can greatly reduce the knock in cylinder, reduce engine vibration. These advantages can make the hair Compared to the ordinary engine long life motivation a lot. Based on the above characteristics, the dual-mode SIDI direct injection engine with the same displacement of the multi point injection engine compared to the maximum power can be improved about 15%, the maximum torque can increase about 8%, while more than 3% of the fuel efficiency.
(intelligent variable timing valve control and intelligent electronic solar term door control system) Lexus SC430 is equipped with a 4.3 litre 32 valve V8 engine equipped with variable valve timing control system (intelligent VVTi) and intelligent electronic solar term door control system (ETCS – I), the power source is not broken. The most people admire, is designed the body of the convertible.
51, double turbocharger engine
A twin turbocharged turbocharged Mercedes Benz is one of the ways. The turbo lag of turbocharger series, a small two or two same parallel turbine turbine, at low engine speed, exhaust can be less driving the turbine rotating speed to generate sufficient intake pressure, reduce the turbo turbo lag. It is common to see a single turbo machinery turbocharged, turbocharged and complex turbo supercharged engine is running. The mechanical advantage is that there is no direct drive turbine, turbo lag, the disadvantage is part of power loss, boosting the value is low. Turbocharging is by the engine exhaust residual kinetic energy to drive the turbine to rotate has the advantages of high speed, turbine, pressurization value on dynamic improve significantly, there is a disadvantage of turbo lag, the engine at low speed (usually in 1500 – 1 The following 800 RPM) exhaust kinetic energy is smaller, can not drive the turbine to rotate at high speed to generate the increase of inlet pressure, the engine power at this time is equivalent to a naturally aspirated, when the speed increase, turbo work power will suddenly ascend. In series and parallel twin turbo cars will see with 2 sets of turbine series or by the parallel twin turbochargers. Each turbine engine is responsible for half of the parallel to the cylinder, each turbine is the same specifications, such as the Porsche 911 Turbo Skyline, GT-R RB26DETT, Supra 2JZ-GTE and BMW 3 new twin turbo is the outstanding representative of the complexity of parallel turbine, its advantage is the pressure response fast and reduce the pipeline. The series turbine is usually a small group of two turbine series collocation and low RPM, driving a small turbine fast response, low torque rich high RPM Large turbine intervention provides sufficient intake volume and power output. RX-7’s 13B-REW engine is a good example of tandem turbine. Common turbocharging is single turbocharging, mechanical turbocharging, exhaust turbocharging and compound turbocharging.
(variable intake and exhaust manifold of engine technology) Lamborghini Lamborghini VIM variable inlet and exhaust manifold of engine technology in mid 90s, the variable intake manifold technology is becoming more and more popular in steam. This technology can improve the torque output of the engine at low and middle speed, no bad influence on the fuel economy and the high speed power, which can improve the adaptability of the engine.
Fixed type intake manifold usually, only in accordance with the specific requirements of the engine, the optimized geometric design or with high speed and low speed requirements, or the compromise, but no matter what kind of design, can not take into account the different speeds of demand. Series of variable intake manifold technology can be divided into two sections or more to adapt to different engine speed.
Variable intake manifold and variable valve technology are similar, but the variable intake manifold technology pays more attention to improve the low speed when the torque output (output of high speed power enhancement effect is not obvious), so this technique is widely applied to ordinary civilian cars. But this is not absolute. Because it can provide better engine response, so in the sports car also gradually began to use this technique, such as the Ferrari 360 and 575. with variable valve technology compared to lower variable intake manifold technology costs — it only need to design some simple shape of solenoid valve and the inlet pipe can be realized; and variable valve technology requires complex hydraulic system and precise driving, if change the valve stroke, also need some special camshafts.
At present, there are two kinds of variable intake manifold Technology: variable intake manifold length and variable intake resonance, they are achieved by the geometric design of the intake manifold. Here we were to discuss these two kinds of technology. The variable intake manifold length variable intake manifold length is a widely used in ordinary civilian cars, intake manifold most of the composition design of two segment length adjustable intake manifold for use in low speed, short intake manifold for use in high speed. Why in high speed to design short intake manifold? Because it can make the air more smoothly, it should be easy to understand; but why need to grow gas manifold at low speed, it will not increase the intake resistance? Because the engine low speed when the engine intake frequency is low, the intake manifold length can gather more air, So it is very suitable for low speed when the engine intake and demand matching, which can improve the output torque. In addition, improved gas manifold can reduce air velocity, can make a mixture of air and fuel are better, more complete combustion, can also produce greater torque output. The car to better adapt to the needs of different air speed and some of the system is designed by the three section variable intake manifold length, such as the V8 engine. Each cylinder has three adjustable inlet manifold, a total of 24 intake manifold. In fact, Audi does not have separate intake manifold, intake manifold it arranged in the central rotor gyro around the rotor position can be different to the different length of the intake manifold. The whole system is arranged on the inside of V type V type angle engine. Lamborghini has more high-end Reventon with three segment variable geometry node Structure intake manifold, variable formal intake and exhaust camshaft technology engine.
53, oil and electricity hybrid power system
Hybrid usually said generally refers to hybrid, fuel (gasoline, diesel) and mixed power. Hybrid electric vehicle is an electric motor as auxiliary power engine to drive the car. The fuel economy performance of hybrid electric vehicle, and traveling to superior hybrid vehicle engine the use of fuel, and in the start, accelerate, with the aid of the electric motor, so it can reduce fuel consumption, simply said, is compared with the same size of the car, the fuel cost is lower. Moreover, the electric motor auxiliary engine can produce strong power, start at the moment so that the owners can enjoy more strong start, accelerate. At the same time, but also to achieve higher fuel economy level.
Types of hybrid vehicles currently has 3 kinds: one is the engine as main power, electric motor as the auxiliary power of the “parallel” (Parallel Hybrid). The main way to engine driving, have a powerful driving force and then start by using the characteristics of electric motors, in vehicle starting, acceleration and engine fuel consumption is large, driven by electric motor assisted way to reduce the fuel consumption of the engine. The structure is relatively simple, only need to increase the electric motor and the battery in the car. Another is that at low speed only by the electric motor driving, speed engine and electric motor combination drive “series parallel.” (Fuel, Cell) starting and low speed rely on electric motor driving, when the speed increases, the common high efficiency shared by the engine and electric motor Power, which requires power sharing devices and generators, and so on, so the structure is complex.
There is only electric motor driven electric vehicle driving the series. “(Series Hybrid) engine as a power source, the car only by the electric motor driving, driving system is the electric motor, but also because the need to install the fuel engine, so it is also a hybrid car.
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