cam stroke

1. This kind of camshaft makes EGR exhaust cam open the exhaust valve slightly when piston close to the bottom dead center in suction stroke, and then the large vacuum degree will suck the exhaust gas in exhaust pipe into the cylinder, in order to achieve internal EGR.
   这种凸轮轴使得当发动机活塞接近吸气行程下止点时，EGR凸轮使排气门略微开启，利用缸内较大的真空度将排气管中的废气吸入气缸，从而实现内部EGR。

noun

1. the maximum movement available to a pivoted or reciprocating piece by a cam

   Synonym:    throwstroke