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Study on the Influence of Passive Pre-chamber Combustion Strategy on In-cylinder Combustion and Emission Characteristics of Gasoline Engines
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Lü Yang1, 2, Shangsi Feng3, Jing Luo1, 2, Lan Li4, Zhe Kang1, 2
Automotive Engineering | 2024, 46(9) : 1633 - 1642
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Automotive Engineering | 2024, 46(9): 1633-1642
Study on the Influence of Passive Pre-chamber Combustion Strategy on In-cylinder Combustion and Emission Characteristics of Gasoline Engines
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Lü Yang1, 2, Shangsi Feng3, Jing Luo1, 2, Lan Li4, Zhe Kang1, 2
Affiliations
  • 1. School of Mechanical and Vehicle Engineering，Chongqing University，Chongqing 400044
  • 2. Chongqing University，State Key Laboratory of Mechanical Transmission for Advanced Equipment，Chongqing 400044
  • 3. New Power Research Institute of Chongqing Changan Automobile Co. ，Ltd. ，Chongqing 400023
  • 4. China Merchants Testing Vehicle Technology Research Institute Co. ，Ltd. ，Chongqing 404100
Published: 2024-09-25 doi: 10.19562/j.chinasae.qcgc.2024.09.011
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As global emission regulations and energy-saving policies become increasingly stringent， gasoline engines are facing significant challenges. The urgent technical challenge is to achieve high efficiency and ultra-low emission of gasoline engines. The pre-chamber turbulent jet ignition is one of the most promising technologies for improving the thermal efficiency of gasoline engines and reducing pollutant emission. In this paper， the influence of lean combustion limit expansion and ignition timing on the optimization of thermal efficiency is investigated systematically through three-dimensional flow simulation analysis coupled with a detailed chemical reaction mechanism. The results show that the passive pre-chamber can effectively expand the lean combustion limit， improve the thermal efficiency and reduce the pollutant emission of the engine in comparison with the spark ignition. At an excess air factor of 1.5， the maximum indicated thermal efficiency is 47.24%， which is 11.89% higher than that of the original engine， with the NO x and Soot reduced by 29.27% and 98.76%， respectively.

gasoline engine  /  passive pre-chamber  /  combustion strategy  /  in-cylinder combustion  /  emission characteristics
Lü Yang, Shangsi Feng, Jing Luo, Lan Li, Zhe Kang. Study on the Influence of Passive Pre-chamber Combustion Strategy on In-cylinder Combustion and Emission Characteristics of Gasoline Engines[J]. Automotive Engineering, 2024 , 46 (9) : 1633 -1642 . DOI: 10.19562/j.chinasae.qcgc.2024.09.011
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Article Info
doi: 10.19562/j.chinasae.qcgc.2024.09.011
  • Receive Date：2024-03-10
  • Online Date：2025-07-29
  • Published：2024-09-25
Article Data
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History
  • Received：2024-03-10
  • Revised：2024-04-19
Funding
Affiliations
    1. School of Mechanical and Vehicle Engineering，Chongqing University，Chongqing 400044
    2. Chongqing University，State Key Laboratory of Mechanical Transmission for Advanced Equipment，Chongqing 400044
    3. New Power Research Institute of Chongqing Changan Automobile Co. ，Ltd. ，Chongqing 400023
    4. China Merchants Testing Vehicle Technology Research Institute Co. ，Ltd. ，Chongqing 404100
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https://castjournals.cast.org.cn/joweb/qcygc/EN/10.19562/j.chinasae.qcgc.2024.09.011
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
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Genus		 种数
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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