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| Multi Objective Optimization of Port Parameters in an Opposed Piston Two Stroke Diesel Engine |
| DOI： |
| Key Words:IC engine opposed piston two stroke scavenging multi objective optimization |
| Author Name | Affiliation | | MA Heyang,LI Xiangrong,YANG Wei,LIU Fushui | 1.School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
2.Key Laboratory of High Efficiency and Low Emission Engine Technology, Ministry of Industry and Information Technology, Beijing Institute of Technology, Beijing 100081, China) |
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| Abstract:A GT-Power model was established to analyze the influence of intake and exhaust port heights on power and scavenging performances of an opposed piston two-stroke（OP2S) diesel engine. A multi-objective optimization method was used to optimize IMEP, scavenging efficiency and trapping ratio at different speeds and to evaluate the power and scavenging performance of the diesel engine. Results show that the optimal intake and exhaust port heights increase with a rise in speed, and compared with the fixed port height, the use of variable port height according to specific speed can increase IMEP. So using variable port height system to achieve VVT can greatly improve the comprehensive performance of the OP2S diesel engine. |
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