Method and device for controlling blending gas of electric-control diesel engine

The invention relates to a method and a device for controlling blending gas of an electric-control diesel engine. The invention can judge the running state of the engine according to rotation speed signals, throttle pedal signals, original diesel spraying pulse width signals and the like, and reasonably set the blending ratio to enable the diesel and gas ratio to achieve the optimum proportion state, therefore the diesel consumption rate and waste gas exhaust are reduced on the premise of ensuring the dynamic property of the engine. The method for controlling blending gas of an electric-control diesel engine comprises a quick and moderate control method for diesel and gas switching, a real-time accurate control method for gas amount and diesel amount, a self-learning control method for bad working conditions and a fault diagnosis function with fault diagnosis and alarming. The device for controlling blending gas of an electric-control diesel engine comprises a signal acquisition module, a diesel spraying amount acquisition and control module, a natural gas supply control module, a microcontroller, a CAN communication module and a serial communication module.