Drive train device

摘要

In a drive train device, in particular a motor vehicle drive train device, with a working fluid pressure system for providing an operating fluid pressure including at least a first and a second operating fluid pressure source connected in at least one operating state directly to the working fluid pressure system, and a lubricating and cooling fluid pressure system with an operating fluid pressure deviating from the operating fluid pressure in the working fluid pressure system, a hydraulic switching unit is provided which in at least one operating state connects the second operating fluid pressure source directly to the lubricating and cooling fluid pressure system for increasing the pressure thereof.

主权项

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).