Deere + Company

Joachim Sobotzik

Nicolai Tarasinski

Bernd Kneer

Marco Reinards

Fritz Glaser

The invention relates to a steering system for an agricultural or industrial utility vehicle, especially for a tractor. An electric drive () is provided for each half of an axle, preferably a front axle (), of the utility vehicle (). Said electric drive can be driven by at least one wheel () associated with the each axle half. The electric drive () can be controlled in such a manner that predetermined torque can be transmitted from the electric drive () to the wheel () which is being driven. Preferably, the wheels () associated with a mechanical drive axle, particularly a rear axle () of the utility vehicle (), can be driven by a mechanical drive () of the utility vehicle (). The invention also relates to a method for operating a steering system. The aim of the invention is to enable traction forces to be transmitted by wheels () driven by the electric drives (), even when the utility vehicle () negotiates bends, whereby particular braking torque should be prevented on said wheels () in specific steering angles. The torque which is to be transmitted to the wheel on the outside of the bend is greater that the torque which is to be transmitted to the wheel on the inside of the wheel in order to support or effect the steering of the utility vehicle.

Steering system for an agricultural or industrial utility vehicle and method for operating a steering system

The invention relates to a vehicle engine system. The engine system includes an internal combustion engine, a cooler of a cooling circuit, an electric generator driven by the engine from a side of the engine which is other than that which faces the cooler, and a fan for moving air through the cooler, all disposed in an engine compartment. An electric motor is powered by the generator and mechanically drives the fan through an output shaft which is mechanically connected to the fan. The output shaft of the motor is disposed in the engine compartment near a mechanical power take-off of the engine. The mechanical power take-off includes a belt pulley connected to a free end of an engine crankshaft.

Vehicle engine system

The invention relates to a system for regulating the pressure of tires mounted on a vehicle. The vehicle has an engine with a turbocharger which is a compressed air source for the pressure regulating system. The turbocharger has a variable geometry in order to supply a sufficiently high pressure.

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Lambsheim, Germany

Joachim Sobotzik