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editing Wikipedia entries supercharged card
supercharger is for the naturally aspirated engine will appear in high-speed region inefficient intake problems start from the most basic key points, that is, to find ways to improve the intake manifold air pressure, to overcome the resistance of valve intervention, although the intake manifold, valve, camshaft size unchanged, but the result of increase of inlet pressure, so that each valve opening period of time to squeeze into the combustion chamber of the air increased, so injection relative increase in volume can make the engine work more powerful energy than before the booster.
Contents [hide]
major systems
features
Type
mechanical supercharger
Pressure Principle
car booster
booster applications
[Edit this section] the main system
now used in car booster system has two main supercharger (Super Charge), Turbo (Turbo Charge) This supercharged way to explain and analyze the advantages and disadvantages. Supercharger (Super Charge) of the structure supercharger belt by belt drive connected with the engine crankshaft, the use of engine driven supercharger speed to within the leaves, to produce pressurized air into the engine intake manifold, the overall structure quite simple, the working temperature boundary at 70 ℃ -100 ℃, different from the turbocharger driven by the engine emissions, must reach 400 ℃ -900 ℃ high temperature exhaust gas, the supercharger system for the cooling system, the requirements of grease NA naturally aspirated engine with the same mechanical maintenance program similar.
[Edit this paragraph] Characteristics
supercharger (Super Charge) of the characteristics of the belt-driven supercharger with the characteristics, the turbocharger speed and engine speed within the blades are completely synchronized, basic characteristics are: engine rpm X ( R1/R2) = supercharger belt leaves the engine rpm R1 R2 disc of the radius of the supercharger drive belt radius of the various types of engine belt drive size is insignificant, while the engine installation space is limited, so supercharger the work of the speed much lower than 30,000 rpm, and the turbocharger 100,000 rpm or more often in the case of high transfer domain far from the same time, supercharger speed is completely linked to engine speed, showing an equal footing between the two phenomena, the formation of a stable arithmetic line, and between the turbocharger and the engine will affect each other, when one side blocked when running, it will definitely be affected by the other belt transmission operation, which is characteristic supercharger . Restrictions due to manufacturing costs, commercial vehicle engines remained at maximum speed of 7500rpm most of the following, should be the ideal supercharger engine at 1000rpm-7500rpm within the work area, resulting in an adequate and stable boost the value, so that the engine output increase 20-40%, the mechanical supercharger to produce boost at low speed to effect, usually from the idling engine of a region in the 1000rpm-1300rpm drive supercharger that is able to produce boost performance, and extended to the maximum engine speed , so the overall boost curve is rising slowly showing a smooth curve, through the oil pressure relief valve adjustment procedure and can reach a But seemingly perfect supercharger system, there is a small problem, due to mechanical supercharger rely entirely on engine driven power sources, the lighter the burden on the engine, the faster the speed increase, which is why race car space air-conditioning compressor are the reasons for removal in advance, if the equation (formula) racing, and even activate the motor, oil pump had been turned into an external connection in order to reduce the burden on the engine, the turbocharger operation itself must be the smaller the resistance Well, it will not drag on the engine efficiency. However, the energy generated by the turbocharger (supercharger value) and the resistance is directly proportional to the value if the blind pursuit of pressurized, although the significant increase in engine power output, but the relative wind vane turbocharger internal resistance will increase, when resistance reaches a certain threshold, the supercharger itself, the resistance will make the engine a great burden to bear, seriously affecting the enhancement of engine speed, so the designer must boost the value of a compromise between the burden with the engine in order to avoid high-pressurized the negative effects of the system. Production in Europe to take most of the mechanical supercharger system 0.3-0.5kg / c of the low-pressurized, they emphasize low-speed torque output and high speed pressure can generate 0.6-0.9kg / c with moderate boost the value and power to enhance the range even more significant, although the supercharger system at this stage is still unable to break 1.0kg / c range of high-pressurized, while the turbine Pressure has long been a breakthrough 2.0kg / c of the super-pressurized state, one in terms of efficiency, turbocharger system can use a High pressurized turbo system must allow the engine to withstand the negative into a positive and dramatic changes in pressure, so the engine internal parts of the material and processing requirements of high precision, for cooling and lubricating system requirements are much higher than the general engine is more high maintenance interval is short, complicated procedures and a short working life .. and so are the high value turbine engine supercharged shortcomings. Parts in the engine to maintain the original form, without additional manufacturing high price case of precision mechanical parts, supercharger system can increase engine power output of 20-40%, and will not cause a burden on the maintenance system, so the major depot In recent years, the supercharged engine has developed programs, such as: BENZ, Jaugar, Aston Martin .. and so senior European automakers have adopted supercharger system to extend the productive life of the existing engine, and reached a green, fuel-efficient, high efficiency targets to substantially reduce development costs of new engines.
[Edit this paragraph] type
supercharger is divided into three categories centrifugal supercharger (Centrifugal Superchargers): The supercharger and turbocharger like, but it is not driven by the engine exhaust, but with the engine belt driven. It turbo supercharger on the same principle, inhaled air by centrifugal force of the air pressure in order to achieve the purpose of compressed air. Basic-type supercharger (Roots Superchargers): You often 60 to 70 years in the muscle car to see that this thing, it suddenly from the engine cover is very obvious, as the same figure Zheliang Mustang. The supercharged internal air suction booster, there are two spiral blades compress the air and then in to the intake manifold. The supercharger can provide a powerful torque output. It accelerated competition and street race is very popular. Screw-type supercharger (Screw Superchargers): This form is the basic type supercharger derived, but also looked like, but their suction compression is different. When air is inhaled when the supercharger supercharger was Forced into spiral blade within the intake manifold. This form of supercharger the horsepower to upgrade the speed is very effective in all
[Edit this section] Pressure Machine
supercharger system supercharger supercharger is a mandatory volume displacement pumps, referred to as the volume of the pump. It is the same with the turbocharger, to increase the air intake pipe pressure and density, to push the engine more air, make the engine each cycle to burn more fuel, thereby improving the engine or power and average effective pressure, making the car power, fuel economy and emissions have been improved. Supercharger is essentially a Roots blower, there are two rotors, each rotor is to reverse a certain angle, for example 60 degrees to form a spiral. Both the rotor by the engine crankshaft via the belt drive, and exhaust system irrelevant. Supercharger with the crankshaft gear ratio between the fixed. These two opposite rotation of the rotor have a number of sudden teeth meshing with each other at work. Distortion of the rotor with the import and export special design combination of geometric shapes will help to reduce pressure fluctuations, so that smooth air flow, lower noise at work. This design also make it more efficient than the traditional Roots blower to high. The rotor with spiral and axial supercharger imports up to 14,000 r / min speed, thereby reducing the volume. It can be used directly through the outlet flange to the intake manifold bolted up. Supercharger size by its displacement and belt drive ratio to match with the engine while the engine speed can be provided in any excess air flow. Supercharger installation in the engine supercharger on the gasoline engine with turbocharger installations, as you can with intercooler. This machinery has a specially designed turbocharger bypass valve, which is produced by the engine vacuum throttle control. When the engine without supercharger, this bypass valve will cause the pressurized air circulation, to save energy. Engine intake system with mechanical supercharger installed base fused. Since each engine has unique installation requirements, so most of the supercharger are designed for specific engine.
[Edit this section] Pressure Principle
supercharger belt tectonic plate the size of various types of engines is insignificant, while the engine installation space is limited, so speed supercharger work far less than 30,000 rpm, and the regular turbocharger high turn over 100,000 rpm in the case of the domain far from the same time, supercharger speed is completely linked to engine speed, showing an equal footing between the two phenomena, the formation of a stable arithmetic line, and the turbocharger and between the engine will affect each other, when one side blocked when running, it will definitely be affected by belt transmission operation of the other party, this is the supercharger features. But seemingly perfect supercharger system, there is a small problem, due to mechanical supercharger rely entirely on engine driven power sources, the lighter the burden on the engine, the faster the speed increase, which is why race car space air-conditioning compressor are the reasons for removal in advance, if the equation (formula) racing,Discount UGG boots, and even activate the motor, oil pump had been turned into an external connection in order to reduce the burden on the engine, so the operation of the turbocharger itself, the more the resistance must be smaller Well, it will not drag on the engine efficiency. However, the energy generated by the turbocharger (supercharger value) and the resistance is directly proportional to the value if the blind pursuit of pressurized, although the significant increase in engine power output, but the relative wind vane turbocharger internal resistance will increase, when resistance reaches a certain threshold, the supercharger itself, the resistance will make the engine a great burden to bear, seriously affecting the enhancement of engine speed, so the designer must boost the value of a compromise between the burden with the engine in order to avoid high-pressurized the negative effects of the system. High pressurized turbo system must allow the engine to withstand the negative into a positive and dramatic changes in pressure, so the engine internal parts of the material and processing requirements of high precision, for cooling and lubricating system requirements are much higher than the general engine is more high maintenance interval is short, complicated procedures and a short working life .. and so are the high value turbine engine supercharged shortcomings. Parts in the engine to maintain the original form, without additional manufacturing high price case of precision mechanical parts, supercharger system can increase engine power output of 20-40%, and will not cause a burden on the maintenance system, so the major depot In recent years, the supercharged engine has developed programs, such as: BENZ, Jaugar, AstonMartin .. more senior European automakers have adopted supercharger system to extend the productive life of the existing engine, and reached a green, fuel-efficient, high-efficiency targets to substantially reduce development costs of new engines.
[Edit this section] car booster
car car supercharger system has two main booster system,UGGs, supercharged (SuperCharge) and turbocharged (TurboCharge) The structure of supercharger, supercharger belt and the engine crankshaft by Belt drive connection, the use of engine driven supercharger speed to the internal blade to produce pressurized air into the engine intake manifold, the overall structure is quite simple, the working temperature boundary at 70 ℃ -100 ℃, different from the turbocharger driven by the engine emissions, must reach 400 ℃ -900 ℃ high temperature exhaust gas, the supercharger system for the cooling system, the requirements of grease NA naturally aspirated engine with the same mechanical maintenance program similar. Supercharger (SuperCharge) characteristics of the belt-driven supercharger with the characteristics, the turbocharger speed and engine speed within the blades are completely synchronized, basic characteristics are: engine rpmX (R1/R2) = turbocharger leaves the engine rpm R1 R2 the radius of the belt drive of the supercharger drive belt radius of the manufacturing costs of the restrictions,bailey UGG boots, commercial vehicles, most of the engine remained at 7500rpm maximum speed of less than ideal mechanical supercharger should 1000rpm-7500rpm engine within the work area to produce a sufficient and stable boost the value, so that the engine output increase of 20-40%, the mechanical supercharger to produce boost at low speed to effect, usually from the idling engine of a region in the 1000rpm-1300rpm driven supercharger that is able to produce boost performance, and extended to the maximum engine speed, so the overall boost curve is rising slowly showing a smooth curve, through the oil pressure relief valve adjustment procedure and can reach a type
[Edit this section] booster applications
supercharged supercharged internal structure favorable gasoline turbocharged diesel engine transient response of mechanical adjustment means for adjusting to rely on bad torque, there is no throttle, the amount of air inhaled per cycle or less, and its the main difference between the mass flow rate caused by the speed of change, so the mass flow span the range of diesel engine is only 6.5:1 or so. In contrast, the traditional gasoline engine (refer to GDI Gasoline Direct Injection Gasoline outside) to rely on variable torque adjustment means adjusting, regulating air flow through the throttle, with the? Load changes, the amount of air inhaled per cycle varied widely, with gasoline engine speed is much greater than the change in scope, so the span of the mass flow of gasoline range up to 75:1, close to the engine 12 times this indicator. This leads to the instantaneous turbo gasoline engine condition worse. The mechanical supercharger to not have this problem. Direct Injection Gasoline is in the low condition of the throttle fully open, it is almost like diesel engine; only in the high-throttle conditions will change with the load changes. Therefore, the mass flow span the scope of GDI engine with close to, but also more suitable for turbo. Supercharged gasoline helps reduce emissions supercharged gasoline engine starting and warm-up phase after starting in need of special enriched mixture, resulting in a large number of hydrocarbons and carbon monoxide emissions. As mentioned earlier, rapid increase in temperature of catalytic converters for gasoline-driven car to meet the European Phase III emission regulations of particular importance. Turbochargers will reduce the exhaust temperature, the temperature of the catalytic converter can not be quickly increased, the conversion of its cleaning efficiency. If the mechanical supercharger to not have this problem. Supercharger can double as secondary air pump is also ESS supercharger kit for the third phase of European emissions regulations to meet the requirements of the considerations, the gasoline engine is necessary to introduce secondary air system. Supercharger can double as secondary air pump, reduce the engine cost. Supercharged gasoline engine to increase the cost of power per liter of gasoline can be used supercharged, four-valve can also be used. On the supercharged 3.8L, two-valve V6 engine with the non-supercharged 4.0L V8 four-valve gasoline engine comparison showed that the supercharged car has good power and torque, and overall costs than non-pressurized four-valve gasoline engine vehicles is low. This is because the four-valve gasoline engine are more complex and higher costs related tools. Supercharged gasoline engine applications in the future before the city Chai Yougong supercharged diesel passenger cars different from the general delivery of the vehicle or truck, because the average speed is low, basically not or rarely reach maximum speed, with idle time is long, starting acceleration, deceleration frequency, turn the engine operating conditions change constantly, so it is suitable for supercharger. The supercharger and turbocharger performance characteristics are complementary in many respects,UGG shoes, Europe and the United States in recent years in some high-end cars and high-power diesel car, these two booster being installed in the same car, experiment.
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