摘要
重点论述轿车节气门啸叫的机理分析及控制方法,并结合某轿车开发中的实际工程案例进行较全面地阐述。通过优化电喷匹配、增加导流板和提升声学包装隔声性能等措施或方法,显著提高该轿车在急踩油门时节气门的声品质,改善整车的加速噪声品质,大大降低产品的市场用户投诉风险,并且对涉及动力总成外特性等的影响进行比较验证。本文将有助于提高国内汽车工业界对轿车节气门啸叫等瞬态NVH性能研究的认识水平和开发能力。
Very few works on sound quality research of automobile＇ s throttle can be found in our Country. In this paper, mechanism analysis and control method of throttle＇ s flow noise are elaborated in combination with a practical engineerhag case in automobile development. By optimizing the EFI match, adding deflector and improving sound package acoustic insulation performance, the throttle＇ s sound quality, when the vehicle is accelerating or rapid braking, is significantly im- proved. And the product market risk of the user＇ s complaints is greatly reduced. At the same time, influence of improvement of the throttle＇ s sound quality on the external characteristics of powertrain is analyzed. This work may be helpful for further study of the throttle＇ s flow noise and the transient NVH performance.
出处
《噪声与振动控制》
CSCD
北大核心
2011年第5期90-92,98,共4页
Noise and Vibration Control
关键词
声学
节气门
啸叫
声品质
acoustics
throttle
flow noise
sound quality
