Patent ID: 8267053

Claim:
An internal combustion engine in which a piston reciprocates within a bore provided in a cylinder block and a connecting rod coupled to the piston transmits motive power to a crankshaft, comprising: an oil supply portion through which oil is injected from a connecting rod side of said piston toward a part of the piston in an inside and an outside of a skirt of said piston; and an oil supply portion through which oil is injected from a connecting rod side of said piston toward a part of the piston in an inside and an outside of a skirt of said piston, wherein said oil supply portion includes a first oil supply portion from which oil is injected to said inside of the skirt and a second oil supply portion from which oil is injected to said outside of the skirt, and a first valve opening pressure at which said first oil supply portion starts oil injection is lower than a second valve opening pressure at which said second oil supply portion starts oil injection.