Development of electronic control unit for dual fuel diesel engine with injection pump

Currently,diesel engines with injection pump are still widely used for various services,so it is necessary to develop dual fuel retrofitting technology on the basis of natural gas as a clean- alternative fuel. Electronic control unit is the core of dual- fuel diesel engine system. To meet the general requirements of retrofitting dual fuel diesel engine with injection pump,the electronic control unit is developed. After the main control chip is determined,the whole hardware circuits are designed into modules for main control system,processing analog signal,driving actuator and so on. Meanwhile,the control theory and method of natural gas injection timing are put forward base on the pressure variation signal of diesel injection. Finally,experiments on engine bench show that the electronic control unit developed in high feasibility and reliability is capable of handling sensor data and qualified for controlling natural gas injector and stepper motor.