INTERNAL COMBUSTION ENGINE WITH VARIABLE COMPRESSION RATIO

摘要

In one form of variable compression ratio engine, a connecting rod of an internal combustion engine is coupled to the rod receiving crank shaft by an eccentric connecting rod bearing. Pivoting of an eccentric portion of the eccentric connecting rod bearing relative to the crank shaft pin by a compression ratio adjuster varies the compression ratio of the engine. Resistance is provided to the pivoting of the eccentric portion in the absence of a compression ratio adjustment force. Pivoting of the eccentric can be delayed until tension and compression forces in the connecting rod are at a reduced level. The compression ratio can be continuously varied over a range from low to high values within limits of the structural components of the system to allow greater control of the compression ratio.