阅读说明：本技术 一种汽车尾气排放管防进水装置 (Water inlet prevention device for automobile exhaust discharge pipe ) 是由 吴良芹 于 2021-10-21 设计创作，主要内容包括：本发明公开了一种汽车尾气排放管防进水装置,包括：发动机排气歧管、排气转换装置及中间连接管、上排气管和下排气管,排气转换装置包括排气口转换阀、外壳、角度电机、法兰盘和轴瓦,角度电机的输出轴贯穿法兰盘、外壳后与所述轴瓦相连接,排气口转换阀设置于所述输出轴上且位于上排气管和下排气管之间,角度电机驱动输出轴旋转以带动排气转换装置转动从而打开上排气管或下部排气管。本发明当汽车没有进水时,可以保证汽车尾气从下排气管正常排放,当汽车涉水或进水后,安装在汽车内的水位传感器会通电,关闭下排气管,打开上排气管,防止水从下排气管进入发动机,引起发动机熄火,从而保证汽车的正常工作,避免了汽车进水带来较大损失。(The invention discloses a water inlet prevention device for an automobile exhaust discharge pipe, which comprises: the exhaust conversion device comprises an exhaust port conversion valve, a shell, an angle motor, a flange plate and a bearing bush, an output shaft of the angle motor penetrates through the flange plate and the shell and then is connected with the bearing bush, the exhaust port conversion valve is arranged on the output shaft and located between the upper exhaust pipe and the lower exhaust pipe, and the angle motor drives the output shaft to rotate so as to drive the exhaust conversion device to rotate and open the upper exhaust pipe or the lower exhaust pipe. When the automobile is waded or enters water, the water level sensor arranged in the automobile is electrified, the lower exhaust pipe is closed, the upper exhaust pipe is opened, water is prevented from entering the engine from the lower exhaust pipe, and the engine is prevented from being flamed out, so that the normal work of the automobile is ensured, and the great loss caused by water entering the automobile is avoided.)