Oil supply system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jul 7, 1998
Grant Date -
N/A
app pub date -
Jan 24, 1996
filing date -
Jan 25, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to an oil supply system with at least one pressure and/or volume dependent controllable pump (1) and an oil tank (5) or the like from which the pump draws oil and delivers it with controlled output pressure or output volume to a system (8) to be supplied. In order to provide an oil supply system with the features described, which, using a single size of loss-free controllable pump tuned for supplying small to medium sized engine sizes, is also capable of supplying large capacity engines reliably and with optimum efficiency, and is furthermore capable of permanently supplying high performance engines when there is movement of the oil level and avoiding 'dry running', it is proposed that according to the invention a constant displacement pump (2) is provided in addition to the controllable pump (1), wherein the controllable pump is configured so that in one and the same direction of revolution of its drive shaft (10), it can deliver or allow passage of the pump medium selectively in the normal pumping direction or in the opposite direction.
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