Principle of electronic actuator for turbocharger

Principle of actuator: 1. The energy of exhaust gas discharged from engine combustion impacts the turbine to generate kinetic energy, which drives the coaxial pressure roller and compressed air to do work, thus increasing the intake pressure;

2. The essence of pressurization is to increase the inflation density; Increasing intake density can be achieved by increasing intake pressure and decreasing intake temperature;

3. At present, the speed of vehicle turbocharging is between 10-240000 rpm. When the engine speed increases, the exhaust gas discharge speed and turbine speed also increase synchronously. In the range of turbocharging pressure, more fresh air is forced into the cylinder, which effectively improves the fuel utilization rate and outputs higher power.

4. Turbocharging protection control

Air intake protection: in order to prevent high-pressure air from directly acting on the electronic throttle when the engine decelerates sharply; At this time, the air inlet and pressure relief valve are opened.

Exhaust protection: control unit according to engine working load; By controlling the opening and closing of the exhaust pressure reducing valve, the supercharging effect of the turbocharger is controlled; At the same time, it also plays a role in protecting the turbocharger and avoiding damage to the original parts due to excessive speed.