Technical research on improving engine thermal efficiency

To aid in addressing global climate change and reduce automobile carbon emissions, the thermal efficiency of engines must be improved. By altering the structural design of an engine body (including the cylinder blocks and cylinder heads), a rapid combustion model with a compression ratio of 16 and a...

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Bibliographic Details
Published in:Advances in mechanical engineering 2022-09, Vol.14 (9)
Main Authors: Mu, Hongyu, Wang, Yinyan, Yang, Chuanlei, Teng, Hong, Zhao, Xingtian, Lu, Hongquan, Wang, Dechun, Hao, Shiyang, Zhang, Xiaolong, Jin, Yan
Format: Article
Language:English
Subjects:
Air-fuel ratio
Automotive engines
Climate change
Combustion chambers
Compression ratio
Cylinder heads
Efficiency
Emissions
Emissions control
Engine blocks
Exhaust gases
Nitrogen oxides
Pollutants
Structural design
Thermodynamic efficiency
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Summary:To aid in addressing global climate change and reduce automobile carbon emissions, the thermal efficiency of engines must be improved. By altering the structural design of an engine body (including the cylinder blocks and cylinder heads), a rapid combustion model with a compression ratio of 16 and a maximum tumble ratio of 3.94 was developed that improved the combustion speed. Through synergistic matching of cooled exhaust gas recirculation with lean burn technology, when the exhaust gas recirculation rate was 20% and the air-fuel ratio was 20, the effect of reducing NOx emission and knocking reached the optimum level. When an electronic water pump and dual thermostat technology were used, the temperature change at the combustion chamber wall of each cylinder was
ISSN:1687-8132
1687-8140
DOI:10.1177/16878132221125032