Research on Fast Driving Control Technology of Electric-Control Injector for Marine High Pressure Common Rail Diesel

Abstract:

Based on the analyses of the current solenoid valve driving circuits in marine diesel, a new type of dual-power double-maintain injector driving circuit is designed for marine high-pressure common-rail diesel. The circuit uses BOOST high voltage (80V) and storage battery low voltage (24V) to make up of dual-power time-sharing driver, which achieves automatic PWM feedback modulation of the solenoid valve injection current from the hardware. Experiments were carried out on a certain type of injector, the results showed that: the driving circuit had fast response time, only 0.045ms from zero to 22A of the solenoid valve current was required; the peak value of driving current has a good consistency, parameters including peakvalue current altitude, lasting time, maintain current altitude and maintain current lasting time could be adjusted flexibly. Besides, the circuit could be flexibly configured without occupying MCU resources.

• Periodical: Applied Mechanics and Materials (Volumes 672-674)
• Pages: 1568-1573
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.672-674.1568
• Online since: October 2014
• Authors: Yan Feng Kong, Guang Yao Ouyang, Zhen Ming Liu, Lu Li
• Keywords: Booster Circuit, Dual-Power Double-Maintain Driving Circuit, High-Pressure Common-Rail, Marine Diesel, Solenoid Valve

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