| 摘要 |
PROBLEM TO BE SOLVED: To enhance reliability in measuring piston sliding characteristics. SOLUTION: In a piston sliding characteristic measuring apparatus 10, a piston ring PR is attached to a dummy piston 70 under the same condition as a piston head, and the dummy piston 70 is incorporated into a cylinder liner 61 of a dummy cylinder jig 62. The dummy piston 70 is fixed in place and the cylinder liner 61 is made to reciprocate linearly along a centerline, together with the dummy cylinder jig 62. Thus, the piston ring and the cylinder liner are both held under a frictional condition similar to that of a true engine by the linear reciprocation of the cylinder liner 61, with the piston ring PR held fixed in place together with the dummy piston 70. In this case, a motor 13 for driving the dummy cylinder jig 62 is disposed on a motor unit 12 which is installed on a floor face independently of the frame of the dummy piston. A piston load produced in the frictional condition is measured via a load detector 80 provided on the fixed dummy piston 70. COPYRIGHT: (C)2004,JPO
|
