As an important means of engine downsizing, energy saving and emission reduction, turbocharging technology has been widely used. However, the problem of turbocharger aerodynamic noise becomes increasingly urgent with the increased requirements of vehicle highpower and acceleration performance. The emphasis was put on researching the mechanism of common aerodynamic noise such as impulse whistling noise and whoosh noise, the calibration scheme of testing tool for impulse whistling noise was put forward and the slotting scheme to suppress the whoosh noise was formulated according to CFD analysis of the rectangular ring groove scheme at the inlet of compressor. With the application on a gasoline turbocharged engine of mass production, the test results show that the turbocharger related noises can be effectively suppressed by using the above noise optimization control methods and the excellent NVH quality of whole vehicle can be achieved.
SUN Yunlong,LEI Chaoqun,CHEN Liang,WU Guangquan,ZHAN Wenfeng,DUAN XinlinSUN Yunlong,LEI Chaoqun,CHEN Liang,WU Guangquan,ZHAN Wenfeng,DUAN Xinlin
. Control Method for Aerodynamic Noise of Turbocharger[J]. Vehicle Engine, 2020
, 0(6)
: 65
-70
.
DOI: 10.3969/j.issn.1001-2222.2020.06.011
