Patent ID: 8701623

Claim:
A multi-link, adjustable-stroke type engine including: a cylinder barrel having formed therein a cylinder for reciprocatively guiding a piston, and a crankcase rotatably supporting a crankshaft; a cylinder head closing a cylinder-side opening of the cylinder barrel from a lateral side thereof; an oil pan provided in a lower region of the cylinder barrel; a cam gear shaft provided in the crankcase and having cams for driving an intake valve and an exhaust valve, respectively; and an eccentric shaft provided in the crankcase for changing an intake stroke and compression stroke of the piston, the multi-link, adjustable-stroke type engine comprising: a timing gear provided on and concentrically with the crankshaft; an eccentric gear provided on the eccentric shaft and meshing with the timing gear so that rotation of the timing gear is transmitted to the eccentric gear; a lubricating oil passage provided in the cylinder barrel for supplying lubricating oil to a lower shaft end portion of the crankshaft and a lower shaft end portion of the eccentric shaft; and an ejection section provided in the lubricating oil passage for ejecting lubricating oil toward a meshing engagement section between the timing gear and the eccentric gear.