The camshaft has a cam, on which there is a lob, or bump. 凸輪軸上有一個(gè)凸輪,凸輪上有一個(gè)凸角。
As the camshaft rotates, the lobe, or high spot of the cam, pushes against parts connected to the stem of the valve. 當凸輪軸旋轉時(shí),凸輪凸起的或者高點(diǎn)的位置,推動(dòng)氣門(mén)座。