The research and development of electronic control unit for diesel engine fuel injection system

Electronically controlled fuel systems are new technology for diesel engine control.They have different types but all apply electronic control to get high injection pressure capability.The key of the technology is driving high speed solenoid and programming the real time control software based on angle.The research and development of electronic control unit in fuel injection system are presented in this paper.To drive solenoid the high frequency pulsewidth modulation power driver circuit and current feedback were applied.The intelligent control of driving current and the real time control of injection timing and injection duration angle are realized by applying closed loop injection control software.