Patent ID: 8763569

Claim:
A vertical, 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 provided with an axis line thereof oriented in a substantially vertical direction; 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; and an eccentric shaft provided in the crankcase for changing an intake stroke and compression stroke of the piston, the vertical, multi-link, adjustable-stroke type engine comprising a lubricating oil passage provided in the cylinder barrel for supplying lubricating oil to a lower shaft end portion of the crankshaft and at least a lower shaft end portion of the eccentric shaft so as to pre-press the crankshaft and the eccentric shaft in a predetermined direction, or a lubricating oil passage provided in the cylinder barrel for supplying lubricating oil to the lower shaft end portion of the eccentric shaft so as to pre-press the eccentric shaft in a predetermined direction.