柴油机单体泵喷射控制EPS系统设计与试验

摘要:

针对柴油机单体泵喷射系统高实时性要求，通过对单体泵控制原理的分析，采用位置同步、角度时钟驱动概念，设计了发动机位置同步系统硬件和喷射系统软件，最高喷射精度达到0.023 4°CA，电磁阀峰值和保持电流分别为12 A和8 A，试验结果表明，该系统不仅实现了快速精确控制喷油，而且具有冗余控制功能。

Abstract:

Based on the analysis of unit pump control principle, the hardware and software were designed according to high real-time performance of injection system on diesel engine. Accurate and real-time injection control was realized by using engine position synchronization (EPS) and angle clock conversion concept. The highest injection accuracy is reached to 0.023 4 degree of crank angle, solenoid valve peak current is 12 A and solenoid valve hold current is 8 A. The experimental results show that the whole system can control injection accurately and includes backup function of crankshaft signal.