What is the working principle of turbocharging?

Because the turbocharger is often working at high speed and high temperature, the temperature of the exhaust gas turbine end of the turbocharger is about 600, and the supercharger rotor rotates at a high speed of 832 1040r min, so in order to ensure the normal operation of the supercharger, the following points should be paid attention to in use:

1. If you can't get on the car, you can go. After the engine is started, especially in winter, it should be allowed to idle for a period of time to allow the oil to fully lubricate the bearings before the supercharger rotor is running at high speed. Therefore, you must not slam the throttle after starting to prevent damage to the supercharger oil seal.

2. Do not turn off the fire immediately. After a long period of high-speed operation, the engine cannot be turned off immediately. When the engine is working, a part of the oil is supplied to the turbocharger rotor bearing for lubrication and cooling.

After the sudden shutdown of the running engine, the oil pressure drops rapidly to zero, the high temperature of the turbocharger turbine part is transmitted to the middle, and the heat in the bearing bearing housing can not be quickly taken away, and at the same time, the supercharger rotor is still rotating at high speed under the action of inertia, so if the engine is suddenly stopped in the hot engine state, it will cause the oil trapped in the turbocharger to overheat and damage the bearing and shaft. Therefore, after the engine is under heavy load and runs for a long time, it should idle for 3 5min before turning off the engine, so that the speed of the supercharger rotor can be reduced and then turned off. In particular, it is necessary to prevent the sudden stalling of the engine after a few kicks of throttle.

3. Keep it clean. When disassembling the supercharger, it is necessary to keep it clean, and each pipe joint must be blocked with a clean cloth to prevent debris from falling into the supercharger and damaging the rotor. During maintenance, care should be taken not to damage the impeller by collision, and if the impeller needs to be replaced, it should be tested for dynamic balance.

After the reassembly is complete, the blockage should be removed.

4. Because the supercharger is often operated at high temperature, its lubricating oil pipeline is affected by high temperature, and the internal oil is prone to partial coking, which will cause insufficient lubrication of the supercharger bearing and damage. Therefore, the lubricating oil line should be cleaned after a period of operation.

5. Always pay attention to check the operation of the supercharger. Before leaving the car and after collecting the car, the connection of each tube of the airway should be checked to prevent loosening and falling off and causing the failure of the supercharger and the short circuit of air into the cylinder.

It can be seen that after the engine is pressurized, the structure of the parts has been strengthened, and from the perspective of use and maintenance, it is necessary to strengthen the mandatory maintenance of the engine and pay attention to the correct control method.

The exhaust gas turbocharger mainly consists of a pump wheel and a turbine, and of course some other control elements. The pump wheel and the turbine are connected by a shaft, that is, the rotor, and the exhaust gas discharged from the engine drives the pump wheel, which drives the turbine to rotate, and the turbine rotates to pressurize the air intake system. The supercharger is installed on the exhaust side of the engine, so the working temperature of the supercharger is very high, and the speed of the rotor is very high when the supercharger is working, which can reach more than 100,000 revolutions per minute, such a high speed and temperature make the common mechanical needle roller or ball bearing unable to work for the rotor, so the turbocharger generally adopts a full floating bearing, which is lubricated by oil, and the coolant cools the supercharger.

Therefore, in view of this structural principle, some problems should be paid attention to when using this engine:

1.After the engine starts, it should be idle for a while, so that the lubricating oil can reach a certain working temperature and pressure, so as to avoid accelerated wear and even jamming due to the lack of oil in the bearing when the load suddenly increases. 2.

When the vehicle is parked, because the supercharger rotor rotates with a certain inertia, the engine should not be turned off immediately, and should be idle for a period of time to gradually reduce the temperature and speed of the supercharger rotor. Immediate flameout will cause the oil to lose pressure and the rotor will not be lubricated when it rotates by inertia and will be damaged. 3.

Check the oil level frequently to avoid bearing failure and rotating parts jamming due to lack of oil. 4.Regularly change the oil and filter, because the full floating bearing has high requirements for lubricating oil, the manufacturer should use the brand oil.

5.Regularly clean and replace the air filter, the air filter will increase the intake resistance and reduce the engine power. 6.

Always check the tightness of the air intake system, air leaks can suck dust into the supercharger and engine, damaging the supercharger and engine. 7.Due to the high precision of the turbocharger rotor bearing, the working environment requirements for maintenance and installation are very strict, so when the turbocharger is faulty or damaged, it should be repaired at the designated maintenance station.

A turbocharger consists of a turbine and a compressor.

2. The turbocharger uses the inertia impulse of the exhaust gas discharged by the engine to push the turbine in the turbine room, and the turbine drives the coaxial impeller, and the impeller presses the air sent by the air filter pipe to pressurize it into the cylinder.

3. When the engine speed increases (when accelerating), the exhaust gas discharge speed and the turbine speed also increase synchronously, the impeller compresses more air into the cylinder, and the pressure and density of the air increase to burn more fuel, increase the amount of fuel and adjust the speed of the engine, so as to increase the output power of the engine.

4. Under the existing technical conditions, the turbocharger is a mechanical device that can increase the "output power" of the engine under the condition of "constant working efficiency". Generally, the engine can increase the output power by about 10% to 40%. It can be inferred that if the engine of the PassATB5 is added, the "output power" after adding a turbocharger should be equivalent to the output power of the displacement engine.

It is conceivable that this thing makes the work efficiency of the engine unchanged, just such a big machine, but also let people do more work, add a turbocharger to compress the air, expand the air intake, so as to increase the output power, it is really a bit of CPU overclocking on the computer. Think about it, people are still very smart, the engine is not strong enough, find a way to force it enough.

The principle of turbocharging is very simple, through the exhaust gas discharged from the engine to impact the turbine operation, in order to drive the coaxial impeller to rotate at high speed, the impeller compresses the air and transmits it to the cylinder.

The main function of turbocharging is to increase the air intake of the engine, thereby increasing the power and torque of the engine and making the car more powerful. When an engine is equipped with a turbocharger, its maximum power can be increased by 40% or more compared to without a turbocharger. This means that the same engine can be boosted to put out more power.

Take our most common turbocharged engine, for example, after supercharging, the power can reach the level of the engine, but the fuel consumption is not much higher than the engine, on another level is to improve fuel economy and reduce exhaust emissions.

When the engine speed increases, the exhaust gas discharge speed and the turbine speed also increase synchronously, the impeller compresses more air into the cylinder, the pressure and density of the air increase can make more fuel fully combusted, increase the amount of fuel and adjust the speed of the engine, you can increase the output power of the engine.

A turbocharger consists of a turbine and a compressor.

Turbocharged engines work on the principle that the exhaust gases from the engine push the turbine to force the engine to increase the engine's power.

The power of the turbocharged engine is greater than that of the naturally aspirated engineSome can even be on par with naturally aspirated engines, the difference lies in the technical differences of various manufacturers.

This number varies with different manufacturers, because each manufacturer is different for the tuning of the engine, the tuning is different, the most direct reflection is that the amount of fuel injected in each cycle is different, the amount of fuel injection is different, the engine work is different, and the power output is not the same.

The principle of turbocharging:

The first turbochargers were used in sports cars or formula cars, so that the engine could get more power in racing races where engine displacement was restricted.

The engine is based on the fuel in the cylinder combustion work to produce power, because the amount of fuel input is limited by the amount of air in the cylinder, so the power produced by the engine will also be limited, if the engine's stupid song bucket running performance has been in the best state, and then increase the output power can only increase the amount of fuel by compressing more air into the cylinder, so as to improve the engine function. Therefore, under the current technical conditions, the turbocharger is the only belt abrasive device that can increase the output power of the engine without reducing the efficiency of the engine.

The turbocharged engine uses the exhaust gas to drive the turbine to increase the air intake of the engine to improve the power of the engine, the turbo is a fan driven by the exhaust gas, and the turbine will increase the engine intake when it works, and the air intake will increase the pressure to see.

Turbocharging mainly uses the energy of the engine and exhaust gas to drive the compressor to achieve the supercharging of the intake air, and the power of the engine will not be consumed in the whole process.

An engine with good acceleration continuity is generated by the combustion work of burning in the cylinder, because the amount of fuel input is limited by the amount of air drawn into the cylinder. Therefore, the power generated by the engine will also be limited, if the engine performance is already in the best condition, and then increase the output power can only be increased by compression, more air into the cylinder to increase the amount of fuel, so as to improve the engine function.

The turbo system is the most common supercharging system in the supercharged engine, if more air and fuel mixture can be forced into the cylinder (combustion chamber) for compression in the same unit time, the detonation action (the engine with a small displacement can "inhale" the same air as the large displacement to improve the volumetric efficiency), it can produce a larger power output than the natural intake engine at the same speed.

Forced air intake

Generally speaking, the engine can increase the additional power by at least 30%-40% after such a "forced intake" action, and such an amazing effect is the reason why turbochargers are so popular. In addition, achieving perfect combustion efficiency and greatly increasing power is the greatest value that turbocharging systems can provide to the vehicle.

First, the exhaust gases from the engine push the turbine impeller at the exhaust end of the turbine and rotate it. This allows the compressor impeller on the other side to rotate at the same time. Therefore, the compressor impeller can forcibly suck the air from the air inlet, and after the rotation and compression of the blades, it will enter the compression channel with smaller and smaller pipe diameter for secondary compression, and the temperature of the compressed air will be higher than that of direct inhalation, and it needs to be cooled by the intercooler before being injected into the cylinder for combustion.

Here's how turbocharging works:

1. The turbocharging device is actually a kind of air compressor, which increases the air intake of the engine by compressing air;

2. The inertia impulse of the exhaust gas discharged by the engine is used to drive the turbine in the turbine chamber, and the turbine drives the coaxial impeller, and the impeller compresses and transports the air from the air filter and the air from the pipe of the defective suspect to pressurize it and enter the cylinder;

3. When the engine speed increases, the exhaust gas discharge speed and the turbine speed also increase synchronously, and the impeller compresses more air into the cylinder, the pressure and density of the air increase can make more fuel fully combusted, and the corresponding increase in fuel volume and adjust the speed of the engine can increase the output power of the engine.