翻译

Steam the car technology designed industry division d technical art Equipped with turbocharged vehicles is getting more and more, also more and more be known by people, he decided to the quality of the modern automobile power performance, this paper mainly discuss Cadillac SLS models 2.0 T turbocharged use simple maintenance and analysis of failure causes Key word: turbocharged, maintenance, fault analysis With the rapid development of national economy, China's automobile yield increase year by year, more and more auto possession in 2011, has 74 million cars, cars and more and more complex. Especially the rapid development of high technology and new technology, new material in the car to be widely applied, and turbocharged in automotive applications are given more powerful car of the power, and the turbo engine's fuel consumption is not better than not turbo-charged engines high fuel consumption how much. In car use, the supercharger will inevitably have problems, and it will have a direct impact on the engine performance, the paper analyzes the supercharger fault, phenomenon, exploration and study the structure of the supercharger reason has the significant practical significance. This paper mainly through the supercharger structure principles and some daily maintenance, correct understanding of the fault, better use of supercharger and maintain the supercharger.

The main functions of turbocharged engine is to raise the subsystem, and increase the engine's power and torque, let the cars even harder. Turbocharged English name for Turbo, generally speaking, if we see in the car tail Turbo or T, namely that the car is the engine Turbo engine. Believe that everyone in the road seen many such vehicles, such as audi A6's 1.8 T, 1.8 T the baolai's 2.0 T, and so on

Turbocharged principle and type

(1) waste gas turbine pressurization system: that was we usually the most common turbocharged unit, its advantage is the supercharger and engine no mechanical connection, so basic won't loss of the original power engine.

It is produced by the engine to the high temperature and high pressure gas turbine at high speed, and promote thus promote even a shaft to the pump wheels, pump wheels will air pressure is sent to the intake manifold, increase the efficiency of the engine intake, can provide more complete combustion of the fuel, so as to increase the power of the engine, and to reduce the fuel consumption, and because the combustion conditions to improve, reduce the waste gas of the discharge of harmful materials, pressurized of engine power can be increased 20% ~ 40%.

(2) mechanical pressurization system: the device installed in engine and engine crankshaft and the belt is connected to the output shaft, from the engine won power to drive the supercharger rotor, which will air boosting and blow to respond to the discrepancy. Its advantage is the same turbine speed and engine, so no lag phenomenon, power output is very smooth. But because the pack in engine axis, so in the power consumption or part, pressure out of the effect is not high.

(3) composite pressurization system: namely waste gas turbo and supercharged, supercharged with low speed to the torque output, but high speed limited power output; And waste gas turbo in high speed has a strong power output, but low speed is ambition. The designers of the engine and imagine the supercharged and turbocharged together, so as to solve two technology their shortcomings, and solve the low speed torque and high power output. The device used in high power diesel engine is more, gasoline engines with double pressurization system (composite pressurization system) models also is less, the mass of TSI (this engine 1.4 both engines low speed torque output and high power output at low speed. When the supercharged most of the pressurization pressure, provide in 1 500 RPM, two supercharger turbo provide pressure. With the rotating speed increase, to make the engine turbocharger can get more power, at the same time, mechanical supercharger turbo pressure gradually reduced. Supercharged by electromagnetic clutch to control it with water pump together. In more than 3500 RPM speed, the turbocharger provide all the pressure, this time