Patent ID: 8955316
Filing Date: 2015-02-17
Classification: F16H

Abstract:
1. A drive train device including a working fluid pressure system ( 10 ) for providing an operating fluid pressure with at least a first and a second operating fluid pressure source ( 11 , 12 ) connected in at least one operating state both directly to the working pressure fluid system ( 10 ), and with a lubricating and cooling fluid pressure system ( 13 ) providing an operating fluid pressure in the lubricating and cooling fluid pressure system ( 13 ) deviating from the operating fluid pressure in the working fluid pressure system ( 10 ), and a hydraulic switching unit ( 14 ) provided for connecting, in at least one operating state, the second operating fluid pressure source ( 12 ) directly to the lubricating and cooling fluid pressure system ( 13 ), the hydraulic switching unit ( 14 ) comprising a switching valve ( 15 ) for connecting the second operating fluid pressure source ( 12 ) depending on an operating fluid pressure in the working fluid pressure system ( 10 ) directly to the lubricating and cooling fluid pressure system ( 13 ), a non-return valve ( 17 ) arranged between the working fluid pressure system ( 10 ) and the switching valve ( 15 ) for preventing an operating fluid flow in the direction toward the switching valve ( 15 ) when both the first and second operating fluid pressure sources are connected to the working fluid pressure system ( 10 ).