早燃-超级爆燃调查方法及控制策略优化研究
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- 英文论文题名：The Study of Pre-ignition and Super Knock Investigation Method and Control Strategy Optimization
- 论文作者：苏方旭 ; 张艳青 ; 向清华
- 英文论文作者：Su Fangxu ; Zhang Yanqing ; Xiang Qinghua ; BAIC Motor Powertrain Co. ; Ltd. ; Technical Center
- 年：2016
- 作者机构：北京汽车动力总成有限公司技术中心;
- 论文关键词：爆燃信号 ; 早燃-超级爆燃 ; 喷油策略 ; 气门正时策略
- 英文论文关键词：knock signal ; pre-ignition and super knock ; injection strategy ; valve timing strategy
- 会议召开时间：2016-10-26
- 会议录名称：2016中国汽车工程学会年会论文集
- 英文会议录名称：Proceedings of 2016 SAE-China Congress
- 语种：中文
- 分类号：TK401
- 学会代码：QCGC
- 会议名称：2016中国汽车工程学会年会暨展览会
- 会议地点：中国上海
- 主办单位：中国汽车工程学会
- 学会名称：中国汽车工程学会
- 页数：5
- 文件大小：1723k
- 原文格式：O
- 会议级别：全国
摘要
采用标定后的爆燃信号监测发动机早燃-超级爆燃,并研究喷油和气门正时策略对早燃-超级爆燃的影响。试验结果表明喷油策略对早燃-超级爆燃和碳烟排放的影响规律基本相同。在一定的范围内,提前第一次喷油时刻,推迟第二次喷油时刻,并减小第二次喷油的比例可以减少早燃-超级爆燃。进气门提前开启、排气门滞后关闭,并适当加浓混合气,可使早燃-超级爆燃敏感性降低。优化后的策略能够在催化器温度不超的前提下显著改善发动机早燃-超级爆燃。
Calibrated knock signal can be used to monitor the pre- ignition and super knock,and to investigate the effect of fuel injection and valve time strategy on pre- ignition and super knock.The test results show:The effect of injection strategy on pre- ignition and super knock and soot emission have the same tendency.Pre-ignition and super knock frequency was reduced by advancing the first injection,retarding the second injection and reducing the fuel ratio of the second injection.Advancing the intake valve open timing,retarding the exhaust valve close timing and enriching the mixture gas can also reduce the pre- ignition and super knock.Pre- ignition and super knock Tendency was significantly improved by optimizing the fuel injection and valve timing strategy after considering the catalyst temperature.
Calibrated knock signal can be used to monitor the pre- ignition and super knock,and to investigate the effect of fuel injection and valve time strategy on pre- ignition and super knock.The test results show:The effect of injection strategy on pre- ignition and super knock and soot emission have the same tendency.Pre-ignition and super knock frequency was reduced by advancing the first injection,retarding the second injection and reducing the fuel ratio of the second injection.Advancing the intake valve open timing,retarding the exhaust valve close timing and enriching the mixture gas can also reduce the pre- ignition and super knock.Pre- ignition and super knock Tendency was significantly improved by optimizing the fuel injection and valve timing strategy after considering the catalyst temperature.
引文
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[2]白云龙,马为,张小燕,等.增压直喷汽油机喷油策略对低速早燃的影响研究[J].内燃机工程,2015,36(4):62-65.
[3]Dingle S F,Cairns A,Zhao H,et al.Lubricant induced pre-ignition in an optical SI engine[C].SAE 2014(01):1222.
[4]Zaccardi J,Escudie D.Overview of the main mechanisms triggering low-speed pre-ignition in spark-ignition engines[J].International Journal of Engine Research,2014,16(2):152-165.
[5]乔佳伟,王义夫,王继波,等.增压直喷汽油发动机早燃现象改善的研究[J].小型内燃机和车辆技术,2014,43(6):44-47.
[6]王志,龙岩,王建昕.增压汽油机中早燃和超级爆燃的研究进展.汽车安全与节能学报[J],2015,6(1):17-29.
[7]Dahnz C,Han K M,Spicher U,et al.Investigations on pre-ignition in highly supercharged SI engines[C].SAE2010(01):0355.
[8]Kunde O,Hansen J,Zenner T,et al.The new 2.OSCTiecoboost gasoline engine from Ford[C].The 19~(th)Aachener Kolloquium Fahrzeug-und Motorentechnik,2010.
[9]李元平,平银生,尹琪.增压缸内直喷汽油机早燃及超级爆燃试验研究[J].内燃机工程,2012,33(5):63-66.