Analysis of Engine Exhaust Pressure Wave Performance

Wu Yang(SAIC-GM-Wuling Automobile Co.,Ltd Chongqing Branch)
Ma He(SAIC-GM-Wuling Automobile Co.,Ltd Chongqing Branch)

Abstract

By analyzing the form of pressure wave within automotive exhaust system and relationship between propagation process and working condition of engine, simulate a work cycle for purpose of timely diagnosing troubles, thus presenting exhaust stroke of four cylinders through pressure wave; modifying of the speed of engine will affect the amplitude of pressure wave, harmonic components, phase position and other parameters; at the end of the exhaust stroke, exhaust pressure wave generates interference, superposition and negative effect, which is of great importance for analysis and diagnosis of engine troubles by using exhaust pressure wave.

Keywords

Exhaust pressure wave; Exhaust system; Model of exhaust system; The simulation

References

Yaoyi Qian, Yunqing Li, Xiumin Yu. Prediction of charging efficiency of diesel engine by intake and exhaust pressure wave[J]. Automotive Technology, 1990, (5). (in Chinese)

Zhirong Ye, Peiguang Tan, Yaoming Yang. Measurement and analysis of exhaust pressure wave in diesel engine[J]. Mechanical and electrical engineering technology, 2004, 33(8).(in Chinese)

Zhiyong Liu,Yimin Xia,Xiangli Dai, et al. Failure analysis of exhaust manifold cracking[J]. Experimental Mechanics, 1990, (5). (in Chinese)

Lan Jun. Relative Analysis on Combustion Pressure Oscillation and Combustion Noise of Diesel Engine[D].Tianjin University,1992. (in Chinese)

Shouzang Yang, Yunbiao Chen. Advanced Technology of Engine: Intake and Exhaust System Ⅱ [J]. Design and Manufacture of Diesel Engine,2001,(4):9-16. (in Chinese)

DOI: http://dx.doi.org/10.26549/met.v1i1.322