Engine lubrication structure

摘要

A lubrication structure of an engine arranged so as to reduce the size and weight of an engine. A lubrication structure that utilizes a lead valve and a strainer that are placed close together and divided by a partition, prevents air from being sucked into a strainer at the same time as reducing the amount of air in the engine oil. In this structure the oil is supplied to the oil pan from an oil exhaust port open to a small partition partitioned by a rib. The oil exhaust port communicates with an oil reservoir in a lower part of a crankcase via a lead valve. Oil sent from the oil exhaust port includes air. However, the air is separated by providing the rib. The oil in the oil pan is sucked through the strainer by the oil pump.