成志明<sup>1,2</sup>， 龔金科<sup>1</sup>，鄂加強<sup>1</sup>
（1.湖南大學(xué)機械與汽車工程學(xué)院，湖南 長沙 410082；2.湖南工程學(xué)院建工系，湖南 湘潭 411104）
摘要：本文描述了一種直接利用火花塞電極作為傳感器檢測南方摩托車發(fā)動機早燃的方法，作者在文章中詳細分析及討論了離子電流的產(chǎn)生機理。為了檢測南方摩托車發(fā)動機早燃現(xiàn)象，利用其氣缸內(nèi)燃燒時產(chǎn)生大量的離子電流信號所包含的豐富燃燒信息，對其火花塞正常點火和熾熱點火離子電流顯示的波形進行研究分析，從而確定是否發(fā)生早燃。實際應(yīng)用結(jié)果表明，這種檢測方法具有較大的實際價值。
關(guān)鍵詞：離子電流；火花塞；早燃；檢測；點火提前角
中圖分類號：U464.12 文獻標識碼：A 文章編號：1672-4984(2006)03-0053-03
Experimental study on pre-ignition detection on south motorcycle engine
CHENG Zhi-ming<sup>1,2</sup>，GONG Jin-ke<sup>1</sup>，E Jia-qiang<sup>1</sup>
(1.College of Mechanical and Automobile Engineering, Hunan University, Changsha 410082，China；
2.Department of Architectural Engineering, Hunan Institute of Engineering, Xiangtan 411104，China)
Abstract: This paper describes a system for preignition in motorcycle engine using spark plus as a detecting probe，the author carries out researches on a method how the ionic current comes into being. In order to examine the south motorcycle engine preignition phenomenon, using the rich burning information of the massive ions which are produced when the air cylinder is burnt, Through analyzing the wave form difference between lighting a fire normally and firing early, it can be determined whether preignition occurs or not. The actualapplication result indicates that the examination method has a greater practical value.
Key words：Ionic current；Spark plug；Preignition detecting；Spark advance
