Method for heating a gearbox
AssigneeZF Friedrichshafen AG
InventorHarald Fischer
Life of this patent
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Abstract
A method for heating a transmission (3) with a torque converter (11), is disclosed. By the selective actuation of clutches (K1, K2, K3, KR, KV) various gears (R1, R2, R3, V1, V2, V3) can be engaged, so that the transmission (3) is blocked on the drive output side, whereby a turbine shaft (12) of the torque converter (11) is immobilized while a drive power is introduced into the transmission (3) by a drive element (2) Blocking the transmission is brought about by actuating the clutches (K1, K2, K3, KR, KV) in such manner that two gears (R1, R2, R3, V1, V2, V3) different from one another in the same driving direction are engaged at the same time.
Claims8
A method for heating a transmission with a torque converter, wherein by the selective actuation of clutches various gears can be engaged, the method comprising:
- blocking the transmission on a drive output side by immobilizing a turbine shaft of the torque converter while delivering a drive power by a drive element to the transmission, wherein blocking the transmission comprises:
- actuating clutches to engage two gears different from one another;
- actuating a clutch defining a driving direction;
- and
- increasing a rotation speed of the drive element;
- wherein blocking the transmission is performed by actuating the clutches in such manner that two gears different from one another but in the same driving direction are engaged at the same time.
Dependencies are inferred from the claim text.