turbocharger, the use of a compressor driven by the exhaust air technology (Air-compressor) operation of an internal combustion engine (Internal Combustion Engine) generated.
1. Turbocharged noun
turbocharger, an exhaust gas by using an engine operating (Internal Combustion Engine) generated drives the air compressor (Air-compressor) technique . And supercharger (supercharger, Super-Charger) similar function, both of which may increase the air flow entering the engine or boiler, so that the efficiency of the hoisting machine. Commonly used in automotive engines, exhaust gas is discharged through the use of heat and flow rate, a turbocharger can improve the horsepower output of the engine.
2. Turbocharger supercharging object
The main effect of the turbocharger is to increase the intake air amount of the engine, thereby increasing engine power and torque, make the car more fresh. After an engine fitted with a turbocharger, which is not installed maximum power booster 40 can be increased when compared to the percentage is even higher. This also means that the same engine can generate a greater power after a boost. Take our most common 1.8T turbocharged engines, after the boost, power can reach the level 2.4L engine, but fuel consumption is not much higher than the 1.8 engine, it is to improve on another level, fuel economy and lower emissions.
3. The negative effects of the turbocharger
However, after a supercharging pressure and the temperature of the engine at the time of the work is greatly increased, and therefore the life of the engine than the same displacement has not been charged engines to be short, and mechanical properties, lubricating properties will be affected, this also limits the turbine to a certain extentApplication of Technology in supercharging the engine.
4. Supercharging principle turbocharged
The first turbocharger for a racing car or equations, so that the engine displacement is restricted inside racing the engine will be able to get more power.
is well known, the engine is by fuel combustion in the cylinder acting to generate power, the fuel inputs being sucked into the cylinder air amount restriction, thus the power generated by the engine will be limited, if the engine is It is at its best operating performance, and then increase the output power can be increased only by the amount of fuel compressed air into the cylinder more, thereby improving combustion capability of doing work. Thus, in the present technical conditions, turbocharger only one which can increase the output power of the engine in the case where the working efficiency of the same mechanical means.
you may feel turbocharger is very complicated, is not complicated, mainly by the turbocharger turbine room and turbocharger components. The first is connected to the air intake manifold of the engine of the turbine chamber, an exhaust port is connected to the exhaust pipe. Is then connected to the air intake duct and the air cleaner turbocharger, an exhaust port connected to the intake manifold, and a turbine wheel are finally installed in the chamber and the turbo supercharger, both coaxially rigidly coupled. Such a turbocharger on the whole do a good job, if your engine computer CPU is the same as “overclocking” the.
we usually call is actually a turbocharger compressor air to increase the intake air amount of the engine with compressed air, in general, is the use of an exhaust gas turbocharger of inertia of the engine exhaustImpulse 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 is faster, the speed of exhaust gases and the turbine speed is also faster synchronization, impeller to compress more air into the cylinder, the air increases the pressure and density can burn more fuel, a corresponding increase in the amount of fuel and engine adjustments speed, can increase the output power of the engine. .
5 turbo supercharged type
● supercharger system: This device is mounted on the engine by a belt connected to the engine crankshaft, the engine from the rotor output shaft to obtain power to drive the turbocharger to rotate, thereby blowing the pressurized air intake manifold hang. The advantage is the same as the turbine speed and the engine, there is no hysteresis, very smooth power output. However, since the rotary shaft is mounted inside the engine, so it is a part of the power consumption, out of the supercharging effect is not high.
● pressure wave supercharger system: using a high pressure exhaust gas pulse wave forcing compressed air. Such systems supercharging performance is good, but the overall good acceleration means relatively bulky, not very suitable for installation in a smaller volume inside the car.
● exhaust gas turbocharger system: This is usually the most common of the turbocharger, the turbocharger without any mechanical contact with the engine, an air compressor is actually to increase the amount of intake air through the 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 feed air impellerAir filter air sent duct, so that pressurized into the cylinder. When the engine speed is faster, the speed of exhaust gases and the turbine speed is also faster synchronization, impeller to compress more air into the cylinder, the air increases the pressure and density can burn more fuel, a corresponding increase in the amount of fuel to the engine can be increased Output Power. Generally, the engine power after the installation of an exhaust gas turbocharger and the torque is increased to 20 percentage -30 percentage. However, the exhaust gas turbocharger technology has its place must be noted that the pump and the turbine wheel connected by a shaft, which is driven by the exhaust pump rotor, engine-out wheel, the turbine driven pump wheel rotation, the rotation of the turbine to the intake system booster. Turbocharger installed in the exhaust side of the engine, the supercharger operating temperature is high, and the turbocharger rotor speed during operation is very high, can reach hundreds of thousands of revolutions per minute, such a high speed and temperature such that the common mechanical needle or ball bearings as the rotor can not work, and therefore widely used turbochargers fully floating bearing, the lubrication oil is performed, there is a coolant for cooling the supercharger.
● Charging System: i.e. the exhaust gas turbocharger and the supercharger and used to help supercharger torque output at low speed, but power output is limited at high speed; the exhaust gas turbocharger has a strong power output at high speed, low speed but is powerless. Engine designers conceived so they combine with a supercharger and a turbocharger, two technologies to address their shortcomings, while addressing the low torque and high power output. This device uses the high-power diesel engines are more dual pressurization system (Charging System) models is still relatively small gasoline engines, the public 1.4 TSI engine (this engine output torque both low-speed and high power output. at low speed, supercharged by most of the supercharging pressure, at 1 500rpm, while providing two turbocharger boost pressure. as the speed increases, the engine turbocharger enables greater power, at the same time, the mechanical supercharger supercharging pressure is gradually reduced. supercharger through an electromagnetic clutch control, which together with the water pump. when the speed exceeds 3500 rpm for, all of the supercharging pressure by the turbocharger, at this time completely separated from the supercharger of the engine under the action of the electromagnetic clutch, to prevent power consumption of the engine) using this system. Which the engine output power, fuel consumptionLow consumption, low noise, but the structure is too complex, high technology, maintenance is not easy, it is difficult to spread.
6. Detailed turbocharged engine
turbocharged engines rely on a turbocharger to increase intake air amount of the engine of an engine, turbocharger (Turbo) Actual an air compressor is on. It is the use of the engine exhaust to drive a turbine of a power chamber (in the exhaust passage), and to drive the turbine wheel located coaxially within the inlet, sent impeller to compress the fresh air duct from the air cleaner, sending into the cylinder. When the engine speed is accelerated, the exhaust gas discharged synchronous speed and the turbine speed is also accelerated, the air would be to increase the degree of compression, the intake air amount of the engine is increased correspondingly, we can increase the output power of the engine.
The biggest advantage of a turbocharged engine it can without increasing engine displacement, the substantial increase in engine power and torque. After an engine fitted with a turbocharger, which is compared with the maximum power output of the supercharger is not installed, the percentage increase of about 40 or more.