Effects of Compressor Performance Change on Engine Transient Performance

HUANG Qiangwei; NI Jimin; WANG Qiwei

doi:10.3969/j.issn.1001-2222.2019.02.008

Vehicle Engine ›› 2019, Vol. 0 ›› Issue (2) : 50-55. DOI: 10.3969/j.issn.1001-2222.2019.02.008

Effects of Compressor Performance Change on Engine Transient Performance

HUANG Qiangwei,NI Jimin,WANG Qiwei

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Abstract

Based on a 1.5 L turbocharged gasoline engine, the effects of compressor characteristic parameters on engine transient performance at low speed and low load was studied. A steadystate simulation model was established and verified in GTPower and then a transient simulation model was constructed. The engine transient performance was studied using a constant speed and increase of torque method and three transient response indicators were established for analysis. By changing the distribution of compressor highefficiency zone in the highlow pressure ratio range and largesmall flow range and analyzing the transient performance evaluation index, the transient performance was optimized when the highefficiency zone lied in the highpressure ratio range. The transient response accelerated by 68% when the ratio changed as 20% within this range. The results show that different distributions of compressor highefficiency zone in the highlow pressure ratio range and largesmall flow range can improve the transient performance of engine.

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/ mso-hansi-font-family: 宋体">compressor;efficiency;transient performance;evaluation index

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HUANG Qiangwei,NI Jimin,WANG Qiwei. Effects of Compressor Performance Change on Engine Transient Performance[J]. Vehicle Engine. 2019, 0(2): 50-55 https://doi.org/10.3969/j.issn.1001-2222.2019.02.008