Patent ID: 6705255
Filing Date: 2004-03-16
Classification: F02B,F16C

Abstract:
A crankshaft for use with a variable compression ratio engine having a connecting rod and a rod bearing associated with the connecting rod, the crankshaft comprising:a crankpin adapted to be coupled to the connecting rod with the rod bearing disposed between the crankpin and the connecting rod, the crankpin including a circumferential surface having first and second side surface portions and a main surface portion disposed between the side surface portions, the main surface portion being configured to receive the rod bearing, the first side surface portion having a first aperture that is disposed at least partially outwardly of the rod bearing when the rod bearing is received on the main surface of the crankpin and the crankpin is coupled to the connecting rod, the crankpin further defining, at least partially, a first fluid passage in fluid communication with the first aperture for supplying pressurized fluid to the first aperture, wherein the fluid is useable to vary compression ratio of the engine.