Advanced science.  Applied technology.


Independent Valve Train Lubrication System: 5,823,159


A heat exchanger is provided in an oil recirculation system that is exclusively dedicated to providing lubrication of the valve train in an overhead cam engine. The flow rate of oil through the heat exchanger is controlled to maintain the temperature of oil disposed in a reservoir formed in an enclosure in which the overhead cam and associated valve train components are mounted, at a value sufficient to assure a sufficiently thick oil film between sliding components of the overhead cam valve train under high surface contact loads.

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Susumu Ariga