LJ276QA发动机直接点火系统设计研究

本文分析了目前国产LJ276QA发动机点火系统存在的问题，提出了新的采用直接点火系统（DIS）的点火方案，建立了直接点火系统次级电压特性的计算模型，应用该模型对该发动机直接点火系统参数进行了设计计算，确定了系统主要参数。本文的设计分析方法可以用于其它汽油发动机直接点火系统的设计，也可作为电喷系统点火问题的设计参考。

This paper analyses the existing problems of the domestic LJ276QA engine ignition system and putsforward a new ignition plan using Direct ignition System(DIS). Its secondary voltage characteristic computing moduleis established and is used to compute the system's parameter and its major parameter is determined. The design andanalysis methods of this paper can be used to design the direct ignition system of other gasoline engine and also usedas a design reference to the electronic injection ignition problems.