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本文首先讨论了汽油机增压长期以来由于增压压力Pk与点火提前角θ控制不当所造成的爆燃,介绍了采用微机技术来精确控制Pk与θ的方案。在论文中,描述了Pk控制系统的设计原则以及非线性的问题,不同工况下变Pk控制方式。θ优化控制是该系统中一个最重要的功能,本文介绍了从台架试验中获取基本数据的过程以及如何来建立θ优化控制的数学模型的方法。同时,介绍了微机系统的硬软件并着重讨论了微机在汽油机汽车上应用的抗干扰问题。最后,简单介绍了整个增压系统的配置、台架与整车道路试验结果。
This paper firstly discusses the deflagration caused by improper control of supercharging pressure Pk and ignition advance angle θ for gasoline engine supercharger. The scheme of using microcomputer technology to control Pk and θ precisely is introduced. In the paper, the design principle of Pk control system and the problem of nonlinearity are described. The Pk control method under different conditions is described. θ optimization control is one of the most important functions in this system. This paper introduces the process of obtaining basic data from the bench test and how to establish the mathematical model of θ optimization control. At the same time, the hardware and software of the computer system are introduced and the anti-interference of the microcomputer applied to the gasoline engine is discussed emphatically. Finally, a brief introduction of the entire booster system configuration, bench and vehicle road test results.