吉林大学学报(工学版) ›› 2018, Vol. 48 ›› Issue (1): 159-165.doi: 10.13229/j.cnki.jdxbgxb20160881

• Orginal Article • Previous Articles     Next Articles

Performance optimization of diesel engine based on response surface methodology of multi-boundary combustion conditions

TIAN Jing1, LIU Zhong-chang1, LIU Jin-shan1, DONG Chun-xiao1, ZHONG Ming2, DU Wen-chang2   

  1. 1.State Key Laboratory ofAutomotive Simulation and Control,Jilin University,Changchun 130022,China;
    2.R&D Center,China FAW Group Corporation, Changchun 130011,China
  • Received:2016-11-10 Online:2018-02-26 Published:2018-02-26

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Abstract: The performance optimization of turbocharged common-rail diesel engine was carried out. Taking the China Stage 4 emission standard and less than 5% fuel consumption deterioration as the as the objectives, five combustion boundary parameters, including injection parameters and Exhaust Gas Recirculation (EGR) rate were set for performance optimization on ESC-B speed 50% load rate. Results show the response surface method can determine the key factors that influence the engine performance. The influence of each factor is highly impacted by the specific performance parameter. The interactions among the key factors or between key and minor factors have greater contribution to the engine performance than the interaction among minor factors. Combined with satisfactory degree function, the optimal performance can be accurately estimated, The NOx and soot specific emissions are respectively reduced to 3.43 g· (kW·h)-1 and 0.019 g· (kW·h)-1, while the fuel consumption is slightly higher compared with the prototype. This response surface methodology can be used for engine performance research and development.

Key words: power machinery and engineering, diesel engine, multiple injections, response surface, satisfactory degree function, emission

CLC Number: 

  • TK427
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