The Theoretical Analysis and Optimization of the Fuel Injection Drive Circuit for Diesel Engine

Abstract:

In order to achieve different response indifferent moment of fuel Injection Solenoid, a driving mode of Peak&Hold is generally applied to electronic control fuel injection system of the diesel engine. The theoretical analysis of high speed response and duplicate supply drive circuit based on the energy recovery is made, and a theoretical guidance for optimization design is presented. According to an electronic unit pump developed by ourselves, the optimization design of drive circuit for the fuel injection system is done. The results showed that during the process of injection, the time of current of solenoid valve form 0 to 20A is 224, and the turn-off time is 120which is a little longer than that of the high speed circuit based on the avalanche. And the turn-off time is met the requirement of control precision. With many advantages, such as energy saving and heat reducing, the high speed response and duplicate supply drive circuit based on the energy recovery will become a good choice in electronic control fuel injection system.

• Periodical: Applied Mechanics and Materials (Volume 742)
• Pages: 758-767
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.742.758
• Online since: March 2015
• Authors: Jian Guo Bu, Ming Zhou, Ge Dong, Guang Shuo Feng
• Keywords: Diesel Engine, Duplicate Supply Drive Circuit, Energy Storage, Fuel Injection, Theoretical Analysis

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