柴油机起动测控系统的开发及初步应用

开发了基于循环的柴油机起动过程燃烧、排放测控系统。对一台单缸直喷式柴油机进行了改造,匹配了电控燃油喷射系统,能够实现燃油喷射量及喷油定时的调节。利用瞬时转速、缸压分析了起动过程燃烧组织的优劣,利用单循环采样系统研究起动过程中气体排放物的变化历程。试验结果表明:该系统能够满足柴油机起动过程研究的需要,为研究柴油机起动过程提供了一种有效的测试手段。

Development and application of measure and control system for diesel engine under start conditions

A cycle-by-cycle based measure and control system was developed to study the combustion and emission behaviors of the diesel engine under start conditions.A single cylinder direct injection diesel engine was modified and equipped with a electronic fuel control system,which can control the fuel injection quantity and timing.The diesel engine combustion quality can be studied based on the real-time crank speed and in-cylinder pressure histories.The behaviors of diesel emissions during start conditions can be analyzed by using the cycle-to-cycle emission sampling system.Test results show that the measure and control system is capable of studying the performance under start conditions of diesel engine.