Most engines have timing chains. Some have timing belt with tee

Timing chain and teethed belt must be precise to open and close valves at the right position. 

什么叫正时皮带？驱动水泵的皮带不需要严格控制同步。基本上能带着转就行。

所有跟帖： 

• 那和你怀疑的serpentine belt是什么逻辑关系呢? -Oneshotkill- ♂ (0 bytes) () 01/15/2019 postreply 12:45:21

• The belt driving the water pump is serpentine belt. Not timing b -bashfulx- ♂ (0 bytes) () 01/15/2019 postreply 14:22:54

• 他这06 车应该是timing belt车，water pump应该是由timing belt驱动。 -xyun2013- ♂ (105 bytes) () 01/15/2019 postreply 15:22:25

• 是，蛇皮带是发电机压缩机等 -chinomango- ♂ (0 bytes) () 03/15/2019 postreply 22:28:30