Patent ID: 6896636
Filing Date: 2005-05-24
Classification: F16H,Y10T

Abstract:
1. An oil supply device for a consumer device in an automatic transmission wherein the consumer device operates in a steady state mode requiring a low volume supply of fluid at a high pressure and in a gear shifting mode presenting an additional unpressurized gear shift volume requiring a higher volume supply of fluid at a lower pressure, the oil supply device comprising: a high pressure feed line; a low pressure feed line; a restricted inlet aperture located between the high pressure feed line and an input of the consumer device to provide a restriction in a fluid flow from the high pressure feed line to provide a low volume flow of fluid at the high pressure to the consumer device; and a one way valve located between the low pressure feed line and the input of the consumer device to provide, in conjunction, a higher volume flow of fluid at the lower pressure to the consumer device; wherein, when the consumer device presents the additional unpressurized gear shift volume to the oil supply device upon entering the gear shifting mode,