噴射機車積碳抑制及引擎性能改善之研究

Study of Injected Motorcycle Carbon Deposition and Engine Performance Improvement

劉嘉晏(Jia-Yan Liou)

指導教授 ： 吳澤松

崑山科技大學/工程學院/機械工程研究所/碩士(2009年)

摘要

本研究主要針對國內小排氣量四行程噴射機車，探討節氣門與進氣閥門積碳的形成與影響，利用汽油添加劑、過濾器的改善、節氣閥門鑽孔方式來抑制節氣門與進氣閥之積碳，並探討行車電腦置於機車導流板前方與節氣門旁邊時，其位置與工作溫度之關係。
由實驗結果顯示，節氣門積碳清除後，CO排放量在低速時有明顯的降低，HC排放量則無明顯的趨勢；進氣閥門積碳清除後，HC排放量在高速時有降低的情形。汽油添加劑將建議添加劑量提高兩倍後，可有效清除進氣閥門的積碳，並使進氣閥門上積碳的重量減少40.6%；節氣門積碳檢驗報告指出含有34.8%的鈣、 9.36%的磷、 9.29%的硫與11.11%的鋅等機油常見元素，因此過濾器的改善後確實可降低積碳的形成；在節氣閥門上鑽孔的方式，並沒有改善積碳的效果。將行車電腦固定於機車前方擾流板內，其工作溫度明顯比較低。

關鍵字

積碳 ； 節氣門 ； 進氣閥門

並列摘要

The carbon deposition and engine performance improvement of a four strokes injection motorcycle engine were studied in this paper. The effect of throttle valve and intake valve carbon deposition formation on exhaust emission was investigated. The fuel additive, improvement of filter and throttle valve bored were used to suppress the throttle valve and the intake valve carbon deposition. The effect of the position of Electronics Control Unit (ECU) on the chip operation temperature was also studied.
After clean throttle valve carbon deposition, CO emissions were decreased at low speed, HC emissions were not influenced. After clean intake valve carbon deposition, HC emissions were decreased at high speed. The intake valve carbon deposition was clean up with double dosage of fuel additive. The carbon deposition weight would be reduced up to 40.6%. From the analysis of throttle valve carbon deposition , the element includes 34.8% Ca, 9.36% P, 9.29% S and 1.11% Zn, it was common in engine oil. Improvement of the filter would reduce the carbon deposition formation. The operation temperature of ECU located inside motorcycle front fairing was lower than located on the side of the throttle valve.

並列關鍵字

carbon deposition ； throttle valve ； intake valve

參考文獻

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