李亚南 杨帅峰 慕金华

（奇瑞汽车股份有限公司 发动机工程研究院 安徽 芜湖，241009）

摘 要：本文介绍汽油机的轮系结构和水泵的基本构造，重点介绍水封的功能和产生异响的机理，通过在水封内部增加一个弹性的阻尼元件，改变其工作时的频率和振幅，降低了某些转速下由于水封本身振动引起的噪音，从而提高了整车舒适性。

关键词： 汽油机 冷却系统 水泵 抗噪音水封

Abstract: This paper introduces the basic structure of train structure and Water pump of the gasoline engine, introduces the seal function and noise generation mechanism, by increasing the damping element is an elastic in the water inside, frequency and amplitude change its work, reducing some speed due to seal itself vibration induced noise, thereby improve the vehicle comfort.

Key Words: gasline engine coolant systerm water pump anti-noise seal