| 摘要 |
To provide peak cylinder pressure control, an eccentric bearing is biased toward a first angular position wherein an attached piston is raised to a maximum compression ratio position in the cylinder. The compression ratio may remain constant at lower loads and above until a predetermined force generated by cylinder pressure is reached. At this point, the force acting on the eccentric lever arm or eccentricity of the bearing overcomes the restraining biasing force, causing the eccentric bearing to rotate in the connecting rod to move the eccentric end of the rod outward, away from the cylinder. This motion effectively shortens the length of the connecting rod and moves the piston downward relative to a connected crankpin. In this manner, the effective compression ratio of the cylinder is temporarily reduced and the pressure developed in the cylinder is controlled by the mechanical mechanism.
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