Influence of Miller cycle and EGR coupling on performance of turbocharged diesel engine

HAN Lei; REN Hongjuan

doi:10.12299/jsues.22-0007

Volume 36 Issue 3

Jun. 2022

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HAN Lei, REN Hongjuan. Influence of Miller cycle and EGR coupling on performance of turbocharged diesel engine[J]. Journal of Shanghai University of Engineering Science, 2022, 36(3): 238-242. doi: 10.12299/jsues.22-0007

Citation:

HAN Lei, REN Hongjuan. Influence of Miller cycle and EGR coupling on performance of turbocharged diesel engine[J]. Journal of Shanghai University of Engineering Science, 2022, 36(3): 238-242. doi: 10.12299/jsues.22-0007

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Influence of Miller cycle and EGR coupling on performance of turbocharged diesel engine

doi: 10.12299/jsues.22-0007

HAN Lei,
REN Hongjuan^,

School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, China

Received Date: 2022-01-07
Publish Date: 2022-06-30

Abstract

Abstract

Taking a 6-cylinder, four-stroke, two-stage turbocharged marine diesel engine as the research object, the coupled simulation model of Miller cycle and exhaust gas recirculation (EGR) of two-stage turbocharged diesel engine was established, and the influences of Miller cycle and EGR coupling on the fuel consumption rate and NO_x emissions of the two-stage turbocharged diesel engine were studied. The results show that when the Miller timing is −40°CA, compared with the original engine, the fuel consumption rate is reduced by 3.5%, and the NO_x emissions are reduced by 25.5%. When the EGR rate is 30%, the fuel consumption rate is increased by 5.0% and NO_x emissions are reduced by 98.7%. When the Miller timing is −30°CA and EGR rate is 20%, compared with the original engine, the fuel consumption rate is only increased by 0.1% and NO_x emissions are reduced by 92.7%.
- Miller cycle,
- exhaust gas recirculation (EGR),
- marine diesel engine,
- two-stage turbocharging,
- NO_x emissions

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References(22)

References

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