What is wrong with BMW eml?

Pacific Auto Network BMW eml is the abbreviation of Elektronischemotorleistungsreglung, which means engine power electronic control system. If the car reports this fault, it is recommended to go to the BMW 4S shop and let the technicians diagnose it with the equipment first.

Electronic Power Control EPC(ElectronicPowerControl) is called engine electronic power control system, and many people also call it electronic throttle. In EPC system, the former accelerator cable is replaced by the sensor of pedal device, and the engine control unit (ECU) 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.

Basic principle: Electronic throttle is generally used in gasoline engines. In order to meet the requirements of three-way catalytic conversion of gasoline engines, the air-fuel ratio should be kept around 1. In this way, the fuel injection quantity is required to be proportional to the throttle opening, and the on-board computer will find the fuel injection quantity in this case through calculation or table lookup according to the throttle pedal opening collected by the sensor, so that the air-fuel ratio of the engine can meet the requirements. That is to say, the power of the engine is indirectly controlled by controlling the opening of the electronic throttle of the engine. (Photo/Text/Photo: Pacific Auto Network Chen Yalan)