Scania Cv Ab

Daniel Häggström

Per Arnelöf

Peer Norberg

A brake arrangement for a gearbox is provided, where the gearbox comprises an input shaft, a counter shaft, a main shaft and a plurality of gear wheels pairs which each comprises a primary gear wheel arranged on the counter shaft and a secondary gear wheel arranged on the main shaft. The brake arrangement further comprises at least two brake units each configured to act with a braking torque on the counter shaft or a component connected to the counter shaft, and a control unit configured to control the activation of the brake units. The control unit is configured to activate the at least two brake units one at a time or both simultaneously during an upshift process in the gear box when a secondary gear wheel of a gear wheel pair to be engaged in the gear box is retarded to a synchronous speed with the main shaft.

Brake arrangement for an upshift process in a gearbox

The present invention relates to a device for a gearbox which comprises a main shaft, a counter shaft, a plurality of gearwheel pairs each comprises a primary gearwheel arranged on the counter shaft and a secondary gearwheel arranged on the main shaft and a PTO shaft. The device comprises a switch mechanism movably arranged to a first position in which the PTO shaft is disconnected from the counter shaft in a non-rotatable state, to a second position in which the PTO shaft is rotationally fixedly connected to the counter shaft, and to a neutral position in which the PTO shaft is in a rotatable state and disconnected from the counter shaft. The device comprises further a clutch mechanism able to provide a clutching connection between the counter shaft and the PTO shaft when the switch mechanism is in the first position and in the neutral position.

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Södertälje, Sweden

Daniel Häggström