Effects of Ignition Timing on Combustion and Noncompulsory Emission of Methanol Engine

GONG Changming1; GONG Baoli2; PENG Legao3; SUN Jingzhen2; LI Zhaohui4; QU Xiang4; LIU Fenghua1

doi:10.3969/j.issn.1001-2222.2017.06.005

Vehicle Engine >

2017 , Vol. 0 >Issue 6: 25 - 29

DOI: https://doi.org/10.3969/j.issn.1001-2222.2017.06.005

Effects of Ignition Timing on Combustion and Noncompulsory Emission of Methanol Engine

GONG Changming1 ,
GONG Baoli2 ,
PENG Legao3 ,
SUN Jingzhen2 ,
LI Zhaohui4 ,
QU Xiang4 ,
LIU Fenghua1

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(1.School of Electromechanical Engineering，Dalian Nationalities University,Dalian 116600,China；
2.China Automotive Engineering Research Institute Company Limited,Chongqing 401122,China；
3.Delphi Shanghai Dynamics & Propulsion Systems Co.,Ltd.,Shanghai 200131,China;
4.State Key Laboratory of Automotive Simulation and Control,Jilin University,Changchun 130022,China)

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Abstract

For the cold start problem of methanol engine, one 1130 singlecylinder diesel engine was retrofitted to direct injection spark ignition methanol engine and the influences of ignition timing on methanol combustion and noncompulsory emission during cold start at 266 K were researched by simulating the oxidation reaction mechanism of methanol with AVLFire software and preheating the intake to 283 K with the electric heater plug. The simulation results show that advancing the ignition timing can improve the combustion and reduce the unburned methanol emission. When the ignition timing advances from 8°CA BTDC to 11°CA BTDC, the unburned methanol emission decreases remarkably. Moreover, formaldehyde oxidizes rapidly and its emission decreases obviously when the ignition timing is 17°CA BTDC and the incylinder peak temperature is beyond 1 300 K.

Key words： cold start; direct injection methanol engine; noncompulsory emission; combustion; ignition timing

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GONG Changming1 , GONG Baoli2 , PENG Legao3 , SUN Jingzhen2 , LI Zhaohui4 , QU Xiang4 , LIU Fenghua1 . Effects of Ignition Timing on Combustion and Noncompulsory Emission of Methanol Engine[J]. Vehicle Engine, 2017 , 0(6) : 25 -29 . DOI: 10.3969/j.issn.1001-2222.2017.06.005

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