The main function of the turbocharger of the construction machinery supercharger is to increase the intake air volume of the engine, thereby increasing the power and torque of the engine and making the car more powerful. When a turbocharger is installed in an engine, its maximum power can be increased by 40% or more compared to when the turbocharger is not installed. This means that the same engine can generate more power after being pressurized. Take our most common 1.8T turbocharged engine, after boosting, the power can reach the level of 2.4L engine, but the fuel consumption is not much higher than the 1.8 engine, on the other level is to improve Fuel economy and reduced emissions.
First, let's talk about the approximate structural principle of the turbocharger actuator price. The exhaust turbocharger is mainly composed of the pump wheel and the turbine, and of course there are other control components. The pump wheel and the turbine are connected by a shaft, that is, the rotor. The exhaust gas from the engine drives the pump wheel. The pump wheel drives the turbine to rotate, and the turbine rotates to pressurize the intake system. The supercharger is installed on the exhaust side of the engine, so the operating temperature of the supercharger is very high, and the speed of the rotor is very high when the supercharger is working, which can reach hundreds of thousands of revolutions per minute, such high speed and temperature.
This makes the common mechanical needle roller or ball bearing unable to work for the rotor. Therefore, the turbocharger generally uses a fully floating bearing, which is lubricated by oil, and the coolant is cooled by the supercharger. In the past, turbochargers were mostly used on diesel engines because gasoline and diesel were burned differently, so the form of the turbocharger was different. Unlike a diesel engine, a gasoline engine enters a cylinder instead of air, but a mixture of gasoline and air. If the pressure is too high, it is easy to deflagrate.
Therefore, the installation of a turbocharger must avoid knocking. There are two related issues involved, one is high temperature control and the other is ignition time control.