What is wrong with EPC?

EPC failure generally refers to the failure of the mechanical and electronic system of the vehicle after the vehicle is started.

The fault may be caused by dirty throttle and can be repaired by cleaning. If the brake light is not on, check the brake switch and wiring. In the past, the driver controlled the accelerator pedal according to the power demand of the engine, and the accelerator pedal controlled the accelerator opening through a steel wire rope.

In EPC system, the former accelerator cable is replaced by the sensor of pedal device, and the engine control unit calculates the optimal target accelerator opening according to the position data fed back by the sensor of pedal device, and sends a signal to the accelerator drive motor to make the accelerator rotate to this angle.

Extended data

This method is superior to the cable acceleration control, because the electronic throttle knows the power demand of the engine by calculating and analyzing the input signal of the accelerator pedal position, and converts this information into the torque of the engine through various actuators.

When the engine speed needs to be adjusted due to safety, fuel consumption and other reasons, the engine control unit can adjust the position of the throttle valve without using the accelerator pedal. The advantage of this structure is that the control unit can limit the position of the throttle according to various requirements.

Baidu encyclopedia -EPC