Engine lubrication structure
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsAkifumi Nomura, Yasuo Shimura
Life of this patent
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Abstract
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.
Claims19
A lubrication structure for an engine comprising:
- a first case, including a crankshaft, a connecting rod, and a piston;
- a second case including an oil pan provided in a lower part of the engine;
- said first case and said second case being independent of each other;
- said first case being coupled to said second case via a lead valve;
- said lead valve including a discharge opening for supplying oil to the oil pan;
- and
- a partition for separating air mixed in the oil, said partition being provided between a strainer in the oil pan and the lead valve.
A lubrication structure of an engine comprising:
- a first case, including a crankshaft, a connecting rod, and a piston;
- a second case including an oil pan provided in a lower part of the engine;
- said first case and said second case being independent of each other;
- said first case being coupled to said second case via a lead valve;
- separating means for separating air mixed in oil, said separating means being positioned between a strainer and the lead valve.
Dependencies are inferred from the claim text.