本文選題：增壓汽油機(jī)　切入點(diǎn)：離子電流檢測(cè)　出處：《同濟(jì)大學(xué)學(xué)報(bào)(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(cè)技術(shù),在一臺(tái)增壓進(jìn)氣道多點(diǎn)噴射汽油機(jī)上研究了進(jìn)氣溫度、負(fù)荷、點(diǎn)火提前角、空燃比對(duì)于早燃發(fā)生頻率的影響.試驗(yàn)結(jié)果表明,在一定范圍內(nèi)提升進(jìn)氣溫度并不會(huì)增加早燃發(fā)生頻率,增大負(fù)荷及增大點(diǎn)火提前角將會(huì)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(huì)增加油耗.采用的離子電流檢測(cè)技術(shù),可以實(shí)時(shí)快速檢測(cè)早燃循環(huán).并與缸壓閾值法相比,離子電流信號(hào)判斷早燃更準(zhǔn)確,能夠識(shí)別全部早燃循環(huán),包括燃燒壓力較小的早燃循環(huán),同時(shí)離子電流檢測(cè)法能夠在上止點(diǎn)前25°CA檢測(cè)到早燃發(fā)生的特征信號(hào),這為發(fā)動(dòng)機(jī)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(jì)大學(xué)汽車學(xué)院;同濟(jì)大學(xué)中德學(xué)院;
【基金】：國(guó)家自然科學(xué)基金(51376139;51006075) 博士點(diǎn)基金(20120072110015) 上海科委項(xiàng)目(11DZ2260400) KSPG教席基金
【分類號(hào)】：TK418

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