Cooling system for an internal combustion engine, and engine...

Internal-combustion engines – Cooling – Internal cooling of moving parts; e.g. – hollow valves,...

Reexamination Certificate

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C123S1960CP

Reexamination Certificate

active

07322318

ABSTRACT:
An internal combustion engine is provided with an internal piston cooling system that jets oil from an oil jet onto a surface of a piston during engine operation, to effectively cool the piston. In the piston cooling system of the internal combustion engine, each piston being arranged to reciprocate in a cylinder bore of a cylinder block, and oil is jetted from individual oil jets to each piston, respectively. An oil reservoir is formed in a crankcase journal wall, that journals a crankshaft of the engine. In the crankcase, oil supply passages are provided for supplying oil from a hydraulic supply source to the oil reservoir, and in turn, oil is operatively supplied from the oil reservoir to the oil jets via a passageway.

REFERENCES:
patent: 5860404 (1999-01-01), Tanaka
patent: 2001/0042526 (2001-11-01), Moller et al.
patent: 2003/0041815 (2003-03-01), Kawakubo et al.
patent: 2006/0169224 (2006-08-01), Lenz et al.
patent: 4012475 (1990-10-01), None
patent: 19803242 (1998-08-01), None
patent: 1288460 (2003-03-01), None
patent: 1676989 (2006-07-01), None
patent: 187425 (1922-10-01), None
patent: 2003-074347 (2003-03-01), None

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