Motor vehicle drive train
AssigneeDaimler AG
InventorsUwe Mueller, Detlef Schnilzer
Life of this patent
Estimating the term…
Abstract
In a motor vehicle drive train device with a drive engine and a drive train which has a first coupling unit in the form of a clutch arranged close to the drive engine and at least one second coupling unit arranged in the flow of force from the drive engine close to the drive wheels of the vehicle, a control unit is provided which controls the coupling units and which has an overrun operating mode wherein, at a first point, the drive engine can be disconnected from the drive train by opening the clutch and, at a second point, the coupling units close to the drive wheels can be disengaged so as to disconnect the drive train also from the drive wheels.
Claims13
A motor vehicle drive train device with a drive train (10) which has a drive engine (15), a first coupling unit (11) in the form of a clutch arranged close to the drive engine and at least one second coupling unit (12, 13) arranged in the flow of force after the first coupling unit (11), and with a control unit (14) for controlling the coupling units (11, 12, 13), the control unit (14) having an overrun operating mode in which, at least in an overrun condition, the drive engine (15) is disconnected from a part (16) of the drive train (10) by opening the clutch (11) close to the engine, the control unit (14) being provided to disconnect the drive train (10) by additional opening of the other ones of the coupling units (12, 13) which are close to the drive wheels at a second point in the overrun operating mode, the first coupling unit (11) being arranged in the flow of force between the drive engine (15) and the gearbox device (20), and at least one of the other coupling units (12, 13) connecting a first part (28) of a driven axle (19), which has a drive wheel (31, 33) to a differential (27) in mechanically disconnectable manner.
Dependencies are inferred from the claim text.