
第40卷(2018)第1期:智能化与控制:
柴油机 Diesel Engine
Vol.40(2018)No.1
一种可控火花能量的交流点火系统研究
汪冰吉,张岳,朱彦平,武青正,黄霞平
(七一—研究所,上海201108)
摘要:基于电容储能式电控点火系统研究了一种火花持续期、次级火花电流可控的交流点火系统。利用CADENCEPSPICE软件以及模拟负载试验,验证了不同新波电流、驱动脉宽等可变参数对交流点火系统火花能量的影响。试验结果表明:火花能量的提高依赖于斩波电流值的增大和驱动脉宽的延长,并近似呈线性关系;交流点火系统火花持续时间可实现2.5ms内可控调节,初级输波电流可实现30A内可控调节。交流点火系统可通过相应参数的调节实现火花能量可控,最大火
花能量可达到260mJ,满足气体燃料发动机的功能需求。关键词:交流点火系统;驱动脉宽;火花能量;试验
中图分类号:TK423.9
文献标识码:A
文章编号:1001-4357(2018)01-0018-05
TheStudyof ACIgnitionSystemforControllableSparkEnergy
WangBingji,ZhangYue,ZhuYanping,WuQingzheng,HuangXiaping
(Shanghai Marine Diesel Engine Research Institute, Shanghai 201108)
Abstract: Based on the capacitor-storing spark ignition system, the AC ignition system which can control spark duration and secondary spark current efficiently was researched. How different primary peak cur-rents and driving pulse widths affecting the spark energy of AC ignition system had been verified by CA-DENCE PSPICE software and simulated load test. The test results show that the increase of spark energy is relied on the increase of primary peak current and extend of driving pulse width, and the relationship is almost linear; the spark duration of AC ignition system is controllable within 2.5 ms, and that primary peak current is controllable within 30 A. The AC ignition system can flexibly control spark energy by reg-ulating related parameters, and the maximum value of spark energy could reach 260 mJ, thus meets the requirements of gas-fuel engines.
Key words: AC ignition system; driving pulse width; spark energy; test
0引言
内燃机火花点火系统经历了机械式点火系统、有触点式电子点火系统、无触点式电子点火系统、电控点火系统等几代发展,而当前主流点火系统为电感储能式与电容储能式电控点火系统。新型发动机主要采用电容储能式电控点火系统,这基于其相对电感储能式点火系统的优越性,包括充放电时间短、可适用于高速发动机、不受点火线圈结构
限制等。
针对电容、电感储能式点火系统各自的特点,国内研究者提出了若干改进方案:如哈尔滨工程大学研究的基于电感储能式的双线圈点火系统[1] 北京工业大学研究的基于电感储能式的高频点火系统[2];西北农林科技大学等研究的基于电容储能式多电容依次放电点火系统[3]。这些方案能够改善点火系统性能,实现火花能量增大,但无法实现火花能量的精确可调控制。而火花能量可调的意义
收稿日期:2017-06-12
作者简介:汪冰吉(1992-),男,硕士研究生,主要研究方向为发动机硬件电路设计,E-mail;anchor_szxm@163.com