推荐回答(5个)
发动机的声音与转速有直接的关系,转速越高声音越大。踩油门发动机的转速就会升高随之声音也会增大。
1、启动发动机过程中,启动电机不应有尖啸声;发动机怠速“突突声”均匀,无异响;怠速稳定850 rpm左右(具体稳定怠速值请参考汽车说明书)。
2、轻踩油门,让发动机转速缓缓提高,过程中应无杂音,个别车型在某个固定转速会有共振现象,即整个车身出现抖动(如果共振很轻微,没有引起乘坐不适感的话,应属于正常),过了该转速共振现象应消除;发动机转速超过最高功率点转速后,声音一般都比较明显,但不应该有金属摩擦声。
3、快速踩下油门踏板,发动机动力提升的声音应顺畅无卡滞;要仔细分辨发动机各转速声音。主要发生噪音的来源有:气门声(一般是“嗒嗒”的声音),如果大,有顶气门嫌疑;各种皮带转动声音(一般是“吱吱儿”声),如果大,可能是皮带与机体发生摩擦;如果发动机发出其它的摩擦声音有掩盖突突声音的,值得怀疑。
4、找合适地方,将车辆按复合路况行驶5-10分钟,停稳后怠速仍应稳定在原怠速无变化,声音应同前。
5、打开发动机盖,在发动机两侧再听声音,同时手搬动油门控制筏,在按照上面讲的重点,再仔细听发动机的声音。
发动机的声音与转速有直接的关系,转速越高声音越大。踩油门发动机的转速就会升高随之声音也会增大。1、启动发动机过程中,启动电机不应有尖啸声;发动机怠速“突突声”均匀,无异响;怠速稳定850 rpm左右(具体稳定怠速值请参考汽车说明书)。2、轻踩油门,让发动机转速缓缓提高,过程中应无杂音,个别车型在某个固定转速会有共振现象,即整个车身出现抖动(如果共振很轻微,没有引起乘坐不适感的话,应属于正常),过了该转速共振现象应消除;发动机转速超过最高功率点转速后,声音一般都比较明显,但不应该有金属摩擦声。3、快速踩下油门踏板,发动机动力提升的声音应顺畅无卡滞;要仔细分辨发动机各转速声音。主要发生噪音的来源有:气门声(一般是“嗒嗒”的声音),如果大,有顶气门嫌疑;各种皮带转动声音(一般是“吱吱儿”声),如果大,可能是皮带与机体发生摩擦;如果发动机发出其它的摩擦声音有掩盖突突声音的,值得怀疑。4、找合适地方,将车辆按复合路况行驶5-10分钟,停稳后怠速仍应稳定在原怠速无变化,声音应同前。5、打开发动机盖,在发动机两侧再听声音,同时手搬动油门控制筏,在按照上面讲的重点,再仔细听发动机的声音。
汽车嗡嗡响的原因有以下几种情况:
1、怠速情况下发动机嗡嗡响:汽车在正常怠速状态时,出现嗡嗡响的情况可能是水箱散热用的电子风扇工作所发出的响声,但是这种响声是间接性的,如果嗡嗡声一直存在,可能是温度传感器,或是温度调节器出现了故障,需要车主及时的检查,避免在开车过程中出现异常,引发更大的汽车故障,给车主带来经济损失。
2、汽车低速或变速情况下嗡嗡响:汽车低速或变速情况下出现嗡嗡响的原因一般是因为活塞与气缸壁间隙过大造成的,在安装过程中出现装配过紧、异常磨损时,会出现嗡嗡响的现象,还有一种原因是发动机敲缸,发动机敲缸的初期就会发出嗡嗡响的现象,可能是点火角度提前或者是缸内积碳较多引发的敲缸。
3、汽车在高速的情况下出现嗡嗡响:在高速运行的状态下出现嗡嗡响可能是由于声音共振造成的。在高速运行过程中,机油没有选对也会出现这种现象,机油没有选对,在使用时发动机内部得不到充分的润滑,可能会出现嗡嗡响的现象,或者是水泵出现异常,水泵堵塞或者漏水都会导致发动机出现嗡嗡响的问题。
我的车也有这个问题,有的时候轻轻踩油门都有嗡嗡声,有种感觉车子动力不足一样,去修理厂检查了下说是排气ç
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