| 摘要 |
1. A reciprocating mechanism (40) for an engine comprising a reciprocating member (1) , movable in a substantially linear reciprocating direction between two ends of travel, a piston (2) provided on the reciprocating member (1), and a constant breadth cam (52) and follower (51), the follower (51) being coupled directly to the reciprocating member (1) to translate linear movement of the reciprocating member (1) into rotary motion of the cam (52), and the mechanism being such that movement of the reciprocating member at the two ends of its travel is reversed in dependence upon the rotation of the cam (52), wherein the follower (51) lies below and to the side of the piston bore and the piston is rigidly mounted to the reciprocating member. 2. A mechanism as claimed in claim 1, wherein the constant breadth cam (52) and follower (51) are coupled to a pendulum counterbalance (60). 3. An engine including a reciprocating mechanism (40) as claimed in any of claims 1 or 2. 4. An engine as claimed in claim 3, wherein a piston (2) is provided at each end of the reciprocating member. |
