本文選題：增壓汽油機　切入點：離子電流檢測　出處：《同濟大學(xué)學(xué)報(自然科學(xué)版)》2016年10期 　論文類型：期刊論文

【摘要】：基于缸內(nèi)離子電流檢測技術(shù),在一臺增壓進氣道多點噴射汽油機上研究了進氣溫度、負荷、點火提前角、空燃比對于早燃發(fā)生頻率的影響.試驗結(jié)果表明,在一定范圍內(nèi)提升進氣溫度并不會增加早燃發(fā)生頻率,增大負荷及增大點火提前角將會增加早燃發(fā)生頻率,缸內(nèi)混合氣加濃將有效抑制早燃發(fā)生頻率但是會增加油耗.采用的離子電流檢測技術(shù),可以實時快速檢測早燃循環(huán).并與缸壓閾值法相比,離子電流信號判斷早燃更準確,能夠識別全部早燃循環(huán),包括燃燒壓力較小的早燃循環(huán),同時離子電流檢測法能夠在上止點前25°CA檢測到早燃發(fā)生的特征信號,這為發(fā)動機采取早燃消除方法提供了技術(shù)可能.
[Abstract]:Based on the in-cylinder ion current detection technique, the effects of inlet temperature, load, ignition advance angle and air-fuel ratio on the frequency of early combustion were studied on a turbocharged inlet multi-point injection gasoline engine. Raising the inlet air temperature within a certain range will not increase the frequency of early combustion, and increasing the load and ignition advance angle will increase the frequency of early combustion. The concentration of gas mixture in cylinder can effectively suppress the occurrence frequency of early combustion but increase fuel consumption. The ion current detection technology can detect the early combustion cycle in real time and quickly. Compared with the cylinder pressure threshold method, the ion current signal is more accurate in judging early combustion. All the early combustion cycles, including those with low combustion pressure, can be identified, and the characteristic signals of early ignition can be detected by ion current detection at 25 擄CA before the up-and-down point, which makes it possible for the engine to adopt the method of early combustion elimination.
【作者單位】： 同濟大學(xué)汽車學(xué)院;同濟大學(xué)中德學(xué)院;
【基金】：國家自然科學(xué)基金(51376139;51006075) 博士點基金(20120072110015) 上�？莆椖�(11DZ2260400) KSPG教席基金
【分類號】：TK418

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本文編號：1634642