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US 7,461,568 B2Granted
Drive device comprising a gearbox
AssigneeZF Friedrichshafen AG
InventorBernd Döbele
Life of this patent
Estimating the term…
Abstract
A drive device for a transmission (4), a main engine and a shifting clutch (3). In order to reduce the phase of tractive force interruption during switching operations, the drive device has a shifting brake clutch (9), located between the engine and the shifting clutch, such that during switching operations, intersecting disengaging and engaging processes of both clutches (3 or 9), provide for support of the main engine torque in a gear output (5).
Claims7
A drive device with a transmission (4), the drive device comprising:
- a drive shaft (2) being directly connected with an engine;
- a shifting clutch (3) being located between the drive shaft (2) and an input shaft of the transmission (4), and the shifting clutch (3) detachably coupling the drive shaft (2) with a gear output (5) coupled to an output of the transmission;
- a shifting brake clutch (9) being located between the drive shaft (2) and the shifting clutch (3), and an output of the shifting brake clutch (9) being selectively combinable with the gear output (5);
- the output of the shifting brake clutch (9)driving an auxiliary shaft (16) and an output from the auxiliary shaft (16) driving an output (18, 19) which drives the gear output (5);
- a coaxial gear wheel (14), which is mounted on the drive shaft (2), forming the output of the shifting brake clutch (9) ;
- and
- at least two idle gears (19,20), mounted on the auxiliary shaft (16) and coupled with the output (18, 19) of the auxiliary shaft (16), being optionally and alternately combinable with the gear output (5) via a coupling mechanism (21);
- wherein the coaxial gear wheel (14) meshes with an intermediate wheel (15) which engages with a fixed wheel (17) supported by the auxiliary shaft (16).
5 more elements
A drive device with a transmission (4), the drive device comprising:
- a drive shaft (2) being directly connected with an engine;
- a shifting clutch (3) being located between the drive shaft (2) and an input shaft of the transmission (4), and the shifting clutch (3) detachably coupling the drive shaft (2) with a gear output (5) which is coupled to an output of the transmission;
- a shifting brake clutch (9) being located between the drive shaft (2) and the shifting clutch (3) and an output of the shifting brake clutch (9) being selectively combinable with the gear output(5);
- a coaxial gear wheel (14), which is mounted on the drive shaft (2), forming the output of the shifting brake clutch (9);
- and
- at least two idle gears (19, 20) being mounted on the auxilliary shaft (16) and each of the at least two idle gears (19, 20) being optionally and alternately combinable with the gear output (5) via a coupling mechanism (21);
- wherein a first of the at least two idle gears (19) is located closer to the transmission (4) than a second of the at least two idle gears (20) and meshes with a further idle gear (23) which engages a gear wheel (24) located on a gear output shaft (6) of the transmission (4).
4 more elements
A drive device with a transmission (4), the drive device comprising:
- a drive shaft (2) being directly connected with an engine;
- a shifting clutch (3) being located between the drive shaft (2) and an input shaft of the transmission (4), and the shifting clutch (3) detachably coupling the drive shaft (2) with a gear output (5) which is coupled to an output of the transmission;
- a shifting brake clutch (9) being located between the drive shaft (2) and the shifting clutch (3), and an output of the shifting brake clutch (9) being selectively combinable with the gear output (5);
- a coaxial gear wheel (14), which is mounted on the drive shaft (2), forming the output of the shifting brake clutch (9);
- and
- at least two idle gears (19, 20) being mounted on the auxiliary shaft (16) and each of the least two idle gears (19, 20) being optionally and alternately combinable with the gear output (5) via a coupling mechanism (21);
- wherein a second of the at least two idle gears(20) is located further from the transmission (4) than a first of the at least two idle gears (19) and meshes with an intermediate wheel (25) which engages a gear wheel (26) attached to a main output shaft (7) of the drive device.
4 more elements
Dependencies are inferred from the claim text.