1、 内内 容容 摘摘 要要 汽油机点火系统是点燃式发动机为了正常工作，按照各缸点火 次序，定时地供给火花塞以足够高能量的高压电(大约 15000 30000V)，使火花塞产生足够强的火花，点燃可燃混合气。 点火系统对汽油机是十分重要的组成部分，由蓄电池、发电机、 分电器、点火线圈和火花塞等组成。点火系统通常分为传统点火系 统和电子点火系统。点火系统的点火时刻一般用点火提前角来表示， 即从发出电火花开始到活塞到达上止点为止的一段时间内曲轴转过 的角度。点火提前角是影响汽油机性能的最重要参数之一，点火的 过早或过迟都会直接影响到汽油机的经济性和动力性。 研究点火系统次级高压与汽油机性能之间的关系，首
2、先应该对 次级高电压进行准确测量。测量方案可以分为直接测量和分压式测 量，而分压式测量又分为电阻分压器、电容分压器和阻容分压器。 本文采用结构简单、成本较低的电阻分压器来实现次级高电压的测 量。 本课题是基于摩托车电控燃油喷射技术所研究的点火系统次级 高压测量系统，与现有的点火高压测量系统相比具有成本低、体积 小，便携等优点，在摩托车电控系统、维修服务中的故障诊断以及 生产过程中的质量监测等领域都具有比较广泛的应用前景。 关键词：关键词： 摩托车点火系统；次级高压测量系统；点火提前角;电阻分压器 The Gasoline Engine Ignition System Subprime High
3、-pressure Measurement System Author :Wang Li-sheng Tutor:Liu Shun-xin Abstract The gasoline engine ignition system is lit type engine to work normally, according to each cylinder ignition timing sequence, with sufficient supply of high-energy spark plug (about 15,000 30000V high-tension electricity
4、generated), make the spark plug, lit the spark of strong enough mixture. Ignition system on the engine is very important constituent, by b atteries, generators, distributor, ignition coil and spark plugs etc. The ignition system usually divided into traditional ignition systems and electronic igniti
5、on system. Ignition system ignition moment general use advanced ignition Angle to say, namely from start to send edm BDC piston reached a period of time so the Angle of crankshaft turned. Advanced ignition Angle is the most important influence the engine performance, one of the parameters of the kin
6、dle too early or too late will directly affect the economy and engine performance. Research ignition system subprime high pressure and the relationship between the engine performance, should first to subprime high voltage measured accurately. Survey scheme can be divided into direct measurement and differential pressure, and points of measuring pressure type measuring and divided into resistance bleeder, capacitance bleeder and resistance let bleeder. This paper USES a simple, low-cost
