Motor vehicle gearbox with a hydrodynamic retarder
AssigneeZF Friedrichshafen AG
InventorsGerhard Buri, Bernhard Grupp
Life of this patent
Estimating the term…
Abstract
A motor vehicle gearbox having a hydrodynamic retarder (12) and at least one connection (23) for a power take-off drive. The retarder (12) can be driven by an output shaft (5) of the gearbox (1) via a spur gear stage (11) having a drive gear (9) and an output gear (10). The drive gear (9) engages with at least one further output gear (13) by which at least one further power take-off drive (17, 21) can be driven.
Claims12
A gearbox of a motor vehicle comprising:
- a hydrodynamic retarder (12) and at least a first power take-off drive (23),
- the retarder (12) being drivable by an output shaft (5) of the gearbox (1) via a first spur gear stage (11),
- the first spur gear stage (11) having a drive gear (9) and an output gear (10), and
- the drive gear (9) engaging at least one further output gear (13) by which at least a second power take-off drive (17, 21) is drivable.
A method of operating a gearbox (1) of a motor vehicle comprising a first power take-off drive (17, 21, 23), a hydrodynamic retarder (12) and at least one power take-off connection (23) for the first power take-off drive, the retarder (12) being drivable by an output shaft (5) of the gearbox (1) via a spur gear stage (11), the spur gear stage having a drive gear (9) and an output gear (10), the drive gear (9) engaging at least one further output gear (13) by which at least a second power take-off drive (17, 21) is drivable, the method comprising the step of:
- operating the first power take-off drive and the second power take-off drive (17, 21, 23) either clutch-dependentor drive-dependent.
A gearbox of a motor vehicle comprising:
- a hydrodynamic retarder and a first power take-off shaft;
- a gearbox output shaft that drives an output drive;
- a first spur gear stage comprises a drive gear and a first output gear, the drive gear is rotationally fixed to the gearbox output shaft so as to prevent relative rotation therebetween, and the drive gear engages the first output gear and drives the hydrodynamic retarder via the first output gear;
- and
- the drive gear engages a second output gear and drives at least a second power take-off shaft via the second output gear.
Dependencies are inferred from the claim text.