Zf Friedrichshafen Ag

Frank Sauter

Armin Gierling

Ludger Ronge

Gerhard Buri

Horst Leichsenring

Michael Epple

Sascha Fiesel

Mario Holder

Sylva Rother

Berthold Schraff

Bernhard Grupp

Bernhard Reisch

Peter Schmidtner

Andreas Jauch

Julius Döpfert

Matthias Messmer

Heinz Wanninger

A vehicle transmission has at least one lubrication point, a power take-off, a lubricant tapping point for a power take-off module, and a lubrication system for supplying the lubrication point(s) and the lubricant tapping point with lubricant. The lubrication system includes a lubricant reservoir, a main line section emerging from the lubricant reservoir, a first supply line section leading to the lubrication point(s), a second supply line section leading to the lubricant tapping point, and a return line section leading to the lubricant reservoir. A valve has a first valve port associated with the main line section, a second valve port associated with the lubricant tapping point, a third valve port associated with the return line section, and a bypass duct that acts between the first valve port and the second valve port. A vehicle with such a vehicle transmission and a working machine arrangement are also disclosed.

Vehicle transmission with a power take-off, vehicle and working machine arrangement

A lever () for the temporary disengagement of a parking lock () of a vehicle drive unit (). The lever () comprises a fixing piece () for fitting the lever () onto a parking lock shaft (), which extends inside the vehicle drive unit () and serves to actuate the parking lock (). The lever () is a hand lever with a gripping handle (). The gripping handle () is designed to enable a user to apply a manual force for manual actuation of the lever (). When the lever () is fitted on the parking lock shaft () and moved, the parking lock shaft () is moved from an engagement position to a disengagement position. In the disengagement position, by further movement of the gripping handle () into a locking position, the lever () is blocked against a reverse movement out of the disengagement position.

Hand lever to provisionally disengage a parking lock by hand

A power take-off device for a motor vehicle has a drive input, two drive outputs and a clutch. The first drive output channels drive torque from the power take-off device to propel the motor vehicle. The second drive output channels drive torque from the power take-off device to an auxiliary unit to drive the auxiliary unit. The clutch selectively couples the drive input to the first and second drive outputs. The clutch has three shift positions. In the first shift position, the drive input is coupled to the first drive output and decoupled from the second drive output. In the second shift position, the drive input is coupled to the second drive output and decoupled from the first drive output. In the third shift position, the drive input is coupled to both the first and second drive outputs.

Power take-off device for a motor vehicle and motor vehicle drive train

An auxiliary power take-off assembly in a motor vehicle transmission having a torque converter, transmission input and output with a drive shaft on the transmission input. The drive shaft is permanently connected to a drive motor of the vehicle by a pump shaft of the torque converter, a transmission output shaft at the transmission output and a transmission chain having drive input and output elements. A transmission power take-off shaft on the transmission output and a transmission chain having at least a drive element and a power take-off element of which the power take-off element can be connected to an additional unit to be driven, and having a switching element. The power take-off element is arranged on a power take-off shaft and can be connected to the power take-off shaft via the switching element, which is arranged to act between power take-off shaft and the power take-off element.

Auxiliary power take-off assembly

A stepped braking system is used as a function of the required braking torque in this method for maintaining a desired braking torque in a vehicle equipped with stepped and infinitely-variable permanent braking systems whereby simultaneous activation of the stepped and infinitely-variable braking systems occurs in such manner that the sum of the participations of the different systems provides the required braking torque at any time.

Method for maintaining a desired braking torque

Growing community of inventors

Meckenbeuren, Germany

Frank Sauter