进气湿度对增压汽油机性能影响的试验
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摘要
通过一款涡轮增压汽油机,研究了不同的进气湿度对发动机性能的影响.试验结果表明:随着湿度的增加,一方面实际进入缸内参与燃烧的干空气量下降,另一方面燃烧相位和燃烧持续期恶化,两者共同导致发动机的实测转矩降低而燃油消耗率升高.在大负荷工况时,发动机的抗爆性因湿度增加而得到改善,通过优化发动机的点火提前角,可以改善发动机的燃烧相位,增压发动机在大负荷工况的燃油消耗率反而降低,降低了1.4%～1.8%.
Effects of air humidity on engine performance were studied experimentally on a turbocharged gasoline engine.The test results show that,with the increase of humidity,the actual amount of dry air involved in the combustion process is decreased,leading to a retard of combustion phase and an increase of combustion duration.As a result,the engine measured torque decreases and the fuel consumption increases.However,the anti-knock characteristics are remarkably improved with the increase of air humidity under high load operations.Thus,the fuel consumption is decreased by 1.4%—1.8% under high loads by optimizing the ignition advanced angle and the combustion phase.
Effects of air humidity on engine performance were studied experimentally on a turbocharged gasoline engine.The test results show that,with the increase of humidity,the actual amount of dry air involved in the combustion process is decreased,leading to a retard of combustion phase and an increase of combustion duration.As a result,the engine measured torque decreases and the fuel consumption increases.However,the anti-knock characteristics are remarkably improved with the increase of air humidity under high load operations.Thus,the fuel consumption is decreased by 1.4%—1.8% under high loads by optimizing the ignition advanced angle and the combustion phase.
引文
[1]杨永平.汽油机功率的校正一对内燃机功率标定的讨论[J].内燃机工程,1981,3(1):76-82.
[2]缪实之.环境大气条件对功率的影响[J].国外内燃机,1976,12(3):19-25.
[3]李方成,方大淳.增压柴油机功率校正[J].内燃机学报,1994,12(1):49-56.
[4]杨安杰,杨建伟,朱国营.内燃机标定功率和燃油消耗率的测定及其修正[J].河南工程学院学报,2013,25(3):35-38.
[5]王祝鹏.汽车发动机功率校正系数的计算[J].公路交通科技,1993,10(2):47-53.
[6]Hakeem M,Surnilla G,House C,et al.Evaluating the benefits of On-board measurement of ambient humidity Part-1:Effect on spark timing and combustion efficiency[C]//SAE Paper.Detroit,Michigan,USA,2016,2016-01-1067.
[7]Hakeem M,Surnilla G,House C,et al.Evaluating the benefits of On-board measurement of ambient humidity Part-2:Effect on torque estimation accuracy and drivability[C]//SAE Paper.Detroit,Michigan,USA,2016,2016-01-1068.
[8]王兆文,伍尚,黄胜,等.环境湿度对柴油机NOx及Soot排放特性的影响[J].内燃机学报,2018,36(4):322-331.
[9]何勇,黄帅,伍逸夫.环境因素对某型发动机性能的影响及其修正[J].舰船电子工程,2012,32(6):110-113.
[10]Matthias T,Joerg S,Andreas B,et al.Evaluation of the potential of water injection for gasoline engines[C]//SAE Paper.Detroit,Michigan,USA,2017,2017-24-0149.
[11]Cinzia T,Daniela S,Luca M,et al.Water injection:A technology to improve performance and emissions of downsized turbocharged spark ignited engines[C]//SAEPaper.Detroit,Michigan,USA,2017,2017-24-0062.
[12]Nicolo C,Nahuel R,Andrea B.Investigation of water injection effects on combustion characteristics of a GDITC engine[C]//SAE Paper.Detroit,Michigan,USA,2017,2017-24-0052.
[13]Arturo I,Luca M,Gerardo V.Water injection to enhance performance and emissions of a turbocharged gasoline engine under high load condition[C]//SAE Paper.Detroit,Michigan,USA,2017,2017-01-0660.
[2]缪实之.环境大气条件对功率的影响[J].国外内燃机,1976,12(3):19-25.
[3]李方成,方大淳.增压柴油机功率校正[J].内燃机学报,1994,12(1):49-56.
[4]杨安杰,杨建伟,朱国营.内燃机标定功率和燃油消耗率的测定及其修正[J].河南工程学院学报,2013,25(3):35-38.
[5]王祝鹏.汽车发动机功率校正系数的计算[J].公路交通科技,1993,10(2):47-53.
[6]Hakeem M,Surnilla G,House C,et al.Evaluating the benefits of On-board measurement of ambient humidity Part-1:Effect on spark timing and combustion efficiency[C]//SAE Paper.Detroit,Michigan,USA,2016,2016-01-1067.
[7]Hakeem M,Surnilla G,House C,et al.Evaluating the benefits of On-board measurement of ambient humidity Part-2:Effect on torque estimation accuracy and drivability[C]//SAE Paper.Detroit,Michigan,USA,2016,2016-01-1068.
[8]王兆文,伍尚,黄胜,等.环境湿度对柴油机NOx及Soot排放特性的影响[J].内燃机学报,2018,36(4):322-331.
[9]何勇,黄帅,伍逸夫.环境因素对某型发动机性能的影响及其修正[J].舰船电子工程,2012,32(6):110-113.
[10]Matthias T,Joerg S,Andreas B,et al.Evaluation of the potential of water injection for gasoline engines[C]//SAE Paper.Detroit,Michigan,USA,2017,2017-24-0149.
[11]Cinzia T,Daniela S,Luca M,et al.Water injection:A technology to improve performance and emissions of downsized turbocharged spark ignited engines[C]//SAEPaper.Detroit,Michigan,USA,2017,2017-24-0062.
[12]Nicolo C,Nahuel R,Andrea B.Investigation of water injection effects on combustion characteristics of a GDITC engine[C]//SAE Paper.Detroit,Michigan,USA,2017,2017-24-0052.
[13]Arturo I,Luca M,Gerardo V.Water injection to enhance performance and emissions of a turbocharged gasoline engine under high load condition[C]//SAE Paper.Detroit,Michigan,USA,2017,2017-01-0660.