Oil-cooled internal combustion engine
AssigneeSteyr-Daimler-Puch AG
InventorAssen Valev
Life of this patent
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Abstract
An oil-cooled internal combustion engine comprises an oil pan, containing a common oil sump for a lubricating oil circuit and a cooling oil circuit. Each oil circuit contains a separate oil pump. The cooling oil circuit is directly connected to the sump and a lubricating oil circuit, comprising an oil filter and an oil cooler, is connected to the cooling oil circuit. A secondary cooling oil circuit branches off from the lubricating oil circuit dowstream of the oil cooler, and services engine portions which are subjected to particularly high temperatures, requiring increased cooling.
Claims16
An internal combustion engine, having portions subject to high temperatures and other portions to be cooled, comprising
- an oil pan containing an oil sump,
- a cooling oil circuit, directly connected to said oil sump, containing a cooling oil pump and extending to said other portions to be cooled,
- a lubricating oil circuit, connected to said cooling oil circuit, and containing an oil cooler, a lubricating oil pump and an oil filter, and
- secondary cooling oil circuit means, branching from said lubricating oil circuit downstream of said oil cooler, and extending to said portions subject to high temperatures.
Dependencies are inferred from the claim text.