Journal of Dalian Maritime University >

2021 , Vol. 47 >Issue 3: 86 - 95

DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2021.03.011

Performance optimization of electronically controlled diesel engine blended with butanol based on fuzzy analysis

  • YANG Bai-feng ,
  • WANG Yu-guo ,
  • YIN Chang-chun ,
  • HU Deng ,
  • CAO Wen-sheng
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  • （1.College of Navigation, Quanzhou Normal University, Quanzhou 362000, China; 2. The 711st Research Institute of China Shipbuilding Corporation, Shanghai 201108, China; 3a. Marine Engineering Institute;3b.College of Mechanical and Energy Engineering, Jimei University, Xiamen 361021, China; 4. Fujian Provincial Key Laboratory of Naval Architecture and Ocean Engineering, Xiamen 361021, China)

Received date: 2021-02-09

  Revised date: 2021-03-14

  Online published: 2021-03-14

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Abstract

In order to optimize the comprehensive performance of butanol / diesel electronically controlled diesel engine, firstly, the combustion chamber model of blended fuel engine was established by AVLFIRE, and the accuracy of the model was verified by comparing the simulation value with the bench test value. The influence of butanol mixing ratio and EGR rates on engine performance was simulated. Then, five important factors were arranged to optimize the multi parameter matching by orthogonal experimental design, and the indicated power and NO emission were taken as evaluation indexes, with weights of 0.4 and 0.6 respectively. Fuzzy mathematics analysis was used to analyze the simulation results, and the results show that the order of influence on comprehensive performance was: EGR rate (a2), butanol mixing ratio (a1), intake temperature (a4),intake pressure (a3), injection advance angle (a5); the optimal parameter combination is: a1=10%,a2= 12.5%,a3= 0.223 MPa, a4= 335.15 K,
a5= 20.6 °CA. The indicated power of the combination is 53.8 kW, which is slightly lower than that of the original 55 kW. The mass fraction of NO emssion 2.2×10-4% is 74.1% lower than that of the original 8.5×10-4%. The optimization method can meet the dynamic performance and at the same time achieve the purpose of effectively reducing NO emissions.

Key words： electronically controlled diesel engine; butanol; performance optimization; fuzzy analysis

Cite this article

YANG Bai-feng , WANG Yu-guo , YIN Chang-chun , HU Deng , CAO Wen-sheng . Performance optimization of electronically controlled diesel engine blended with butanol based on fuzzy analysis[J]. Journal of Dalian Maritime University, 2021 , 47(3) : 86 -95 . DOI: 10.16411/j.cnki.issn1006-7736.2021.03.011

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