Lubricating oil sump for internal combustion engines
AssigneeFiat Societa per Azioni
InventorsNicola Gaggiano, Giorgio Forlai
Life of this patent
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Abstract
A lubricating oil sump for an internal combustion engine has hollow side and bottom walls through the interspaces of which engine coolant is circulated to cool oil in the sump, the interspace in the bottom having a meandering flow passage and the internal surface of the sump bottom having longitudinal fins, covered partly by a plate, between which oil flows to be cooled by heat exchange with the engine coolant before entering an oil suction pipe.
Claims5
A lubricating oil sump for internal combustion engines of the kind having side walls and a bottom of hollow construction formed with interspaces for the flow of engine coolant to cool oil in the sump by heat exchange, and inlet and outlet ports communicating with said interspaces, wherein the improvement consists in the following characteristics in combination:
- (a) means subdividing the interspace of the sump bottom into interconnected chambers defining a meandering flow passage for the engine coolant between the inlet and outlet ports;
- (b) fins on the internal surface of the sump bottom, said fins extending longitudinally of the sump;
- (c) a plate resting upon said fins, the plate being spaced from the opposite side walls of the sump to define apertures which extend transversely for admitting oil into the bottom of the sump, and
- (d) means defining holes in the plate adjacent each of its two longitudinal edges for the passage of oil, and a suction pipe communicating with said holes for withdrawing oil from the sump.
Dependencies are inferred from the claim text.