The turbocharger is actually an air compressor, the intake air amount is increased by the compressed air. It is the use of exhaust gas discharged from the engine inertia momentum of the turbine to drive the turbine chamber, a turbine wheel and coaxial driven, the impeller feeding the air sent from the air cleaner duct, so that pressurized into the cylinder. When the engine speed increases, the exhaust gas discharge speed and the turbine speed is also increased simultaneously, impeller to compress more air into the cylinder, the air increases the pressure and density can burn more fuel, a corresponding increase in the rotational speed of the engine and adjustment of the amount of fuel, it can increase the output power of the engine.
1. Turbocharger Principle
turbocharger turbocharger Category
cars run fast, it must have strong power. Current automotive power system can be roughly divided into natural intake system and boost intake system two categories. European sports cars, in addition to BMW still insist on using naturally aspirated engine, the car companies each other in order to improve the power performance of the vehicle, have adopted pressurization system, such as: Mercedes-Benz sports car using the supercharger system, Saab was turbocharged pedigree. In recent years, Japanese cars have begun extensive useTurbo technology. Natural intake system without installing any form of supercharger, but the negative pressure generated by the piston down to the suction intake gas mixture. Although the natural intake timing system can obtain a large power output by the variable valve timing, but the lifting power is limited. In order to effectively increase the output power of the engine, the use of pressurized systems can be said that the most effective way.
The most common engine supercharger supercharging system with an exhaust gas turbocharged. .
Maintenance errors turbocharger 2
misunderstanding: arbitrarily change the oil
in the “drink” oil aspect, the turbocharger is indeed a “fragile”, except that the amount larger than normal number of naturally aspirated engine, the demand for oil is also higher. Because different turbocharger design naturally aspirated engine, floating main shaft design, is full of oil between the turbine shaft and the main body, the entire main shaft to rely on the lubricating oil cooling and lubrication, while low-grade oil, viscous high degree of liquidity is poor, not well play a role. It recommends that owners add some investment in this area, to replace the vehicle fully synthetic motor oil.
Myth: flameout to a destination
After the high-load operation of the engine for a long time, before turning off the engine owners, must be idle few minutes, so that parts can be effectively cooled and lubricated. Immediately turn off the car’s behavior will make vehicles often are in a high-speed idle state, its problems with sudden acceleration, as will damage the bearing of the vehicle.
Myth: a start on H-throttle
could be a major feature of turbocharged car in a short time to improve the speed, but this does not mean you can be rude to car owners,In fact, immediately after the start Meng throttle is easy to damage the turbocharger oil seal. Turbocharged engine rotation number is high, after starting the vehicle, the accelerator pedal is not slam, should be idle for 3-5 minutes, so that oil pump sufficient time to all parts of the oil supplied to the turbocharger, while oil after the temperature was gradually increased, better flow speed at this time will “duck.” .
3 turbocharger advantages
turbocharger turbine turbocharger has five main advantages:
1, increase engine power. In the case of the same engine displacement by increasing the intake air density, so that the engine may be a multi-injection, thereby increasing the engine power, the engine after the installation of the power and torque to turbocharger 20 percentage to 30 percentage increase. Conversely at the request of the same power output can be reduced bore of the engine, reduce the size and weight of the engine.
2, to improve engine emissions. Turbo engine by improving combustion engine efficiency and reduce emissions of harmful components in engine exhaust gas particulate matter and nitrogen oxides. A diesel engine emission standards meet Euro two or more indispensable configuration.
3, to provide altitude compensation features. Some of the high altitude, the higher the altitude, the thinner the air, the engine with a turbocharger can be overcome by the power drop caused by the thin air altitude engine.
4, to improve fuel economy, reduce fuel consumption. Due to better engine combustion performance with a turbocharger, the percentage of fuel savings 3 -5 percentage.
5, with high reliability and good matching characteristics, high transient response characteristics.