Oil pan for internal combustion engine
AssigneeNissan Motor Co., Ltd.
InventorKentaro Matsui
Life of this patent
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Abstract
An oil pan for an internal combustion engine wherein the oil dropped on a shallow bottom section is rapidly returned into a sump. A plurality of guide ribs are disposed on the downstream side of the shallow bottom section which is located at the downstream side of the oil flow caused by the rotation of a crankshaft of the engine. The guide ribs are formed in an arcuate shape so as to curve toward the sump as they approach a side wall located at the downstream side, by which the oil flow is directed toward the sump. Additionally, a guide plate formed integrally with a baffle plate extends upwardly to guide the flowing oil into the sump.
Claims10
An oil pan for an internal combustion engine, comprising:
- a shallow bottom section fixedly disposed under a cylinder block of the engine, said shallow bottom section defining thereover a space in which a crankshaft is disposed;
- a sump section defining a sump, located under the cylinder block of the engine, said sump section being connected with said shallow bottom section so that said sump is communicated with said shallow bottom section space, said sump having a lower part which is lower in level than said shallow bottom section;
- and
- at least one guide rib fixedly disposed on said shallow bottom section exclusively at one side which is located downstream of oil flow caused by rotation of the crankshaft, said guide rib being curved toward said sump as it approaches the downstream side of said shallow bottom section.
Dependencies are inferred from the claim text.