Patent ID: 6766784
Filing Date: 2004-07-27
Classification: F01M,F02B

Abstract:
A four-cycle engine fueled by a fuel-lubricant mixture comprising:a cylinder, a piston slidably mounted in the cylinder, a combustion chamber formed at one end of the cylinder and a crank case chamber formed at the other end whereby reciprocation of the piston in the cylinder produces suction and compression alternately in the combustion chamber and the crank case chamber; a fuel flow path into and out of the crank case chamber and extended outside the cylinder to the combustion chamber; a valving system that controls the flow of fuel along said flow path and into the combustion chamber, and valve actuating mechanism contained in the flow path between the crank case chamber and the combustion chamber for lubrication of said actuating mechanism provided by lubricant contained in a fuel-lubricant mixture; a component of said actuating mechanism being a rotating gear including a shaft having shaft ends mounted in bushings provided in a pair of spaced-apart wall portions forming in part said flow path for the fuel-lubricant mixture, and a through hole into one of said wall portions closely spaced from a bushing and extended angularly toward and into the bushing, said through hole receiving the fuel-lubricant mixture for lubrication of a shaft end contained in said bushings.