| 摘要 |
An hydraulic cam follower for actuating the valves of internal combustion engines and the like comprises a hollow cylindrical body (1) closed at one end and slidably mounted on a sleeve (4) fixed relative to the body (1), a piston (8) slidably mounted within the sleeve (4), the outer end of the piston (8) being in engagement with a push rod (9), a chamber (20) being defined between the inner end of the piston (16) and the closed end of the body (1) and containing hydraulic fluid. Displacement of the body (1) by the cam (2) displaces the hydraulic fluid which moves the piston (8) within the fixed sleeve (4) to give the push rod (9) a longer and quicker stroke than the stroke of the body (1). |
