Jaguar Land Rover Limited

Steve Mullane

Russell Osborn

John Spooner

Sam Burt

Simon Sutton

Malkit Ram

Alex Tylee-Birdsall

Steve Nesbitt

Gareth Thomas

Ian Beverley

Shaun Wick

Brett Hallam

Mark Rathbone

Matthew Hole

Mark Findlay

George Scott

A gear selector comprising a gate pattern and a gear lever arranged to be moveable within the gate pattern, the gate pattern comprising: a high range gate sub-pattern comprising one or more high range gear planes for moving the gear lever into to select a high range gear; a low range gate sub-pattern comprising one or more low range gear planes for moving the gear lever into to select a low range gear; a neutral plane extending transversely with respect to the high and low range gear planes; and a force profile arranged to urge the gear lever when in the neutral plane toward a resting position in one of the one or more high range gear planes, the force profile comprising a first interference arranged to divide the high range gate sub-pattern from the low range gate sub-pattern, wherein the gear lever is moveable past the first interference from the high range gate sub-pattern to the low range gate sub-pattern when a first predefined action is performed by an operator moving the gear lever.

Gear selector

Aspects of the present invention relates to a vehicle control system () for controlling a vehicle transfer case (). The transfer case () is operable in a high range and a low range. The vehicle control system () is configured to output a range change signal to implement a transfer case range change. The vehicle control system () also outputs a brake control signal for controlling vehicle braking during the range change. The present invention also relates to a vehicle () and a related method of operating a vehicle control system () and optionally also a transmission ().

Vehicle control system and method

Aspects of the present invention relate to a vehicle control system () for controlling a vehicle transfer case (). The transfer case () is operable in a high range and a low range. The vehicle control system () is configured to determine an operating range for the transfer case () based on a selected vehicle operating mode. A range change signal is output to implement a range change to engage the determined operating range. The present invention also relates to a vehicle () and a related method of operating a vehicle control system ().

A constant mesh gearbox has five parallel rotational axes. The input and output axes are not aligned. Up to eight forward speeds and two reverse speeds are disclosed, with two very low ratios suitable for non-highway travel. The transmission is suitable for two and four wheel drive.

Transmission

Aspects of the present invention relates to a vehicle control system () for controlling a vehicle transfer case (). The transfer case () is operable in a high range and a low range. The vehicle control system () includes a selection means () for selecting first and second control strategies for the transfer case. The first and second control strategies are based on an activation time of the selection means (). A further aspect of the present invention relates to a vehicle control system () for implementing a deferred transfer case range change. The present invention also relates to a vehicle () and a related method of operating a vehicle control system ().

A constant mesh gearbox has five parallel rotational axes. The input and output axes are not aligned. Up to eight forward speeds are disclosed, with two very low ratios suitable for non-highway travel. The transmission is suitable for two and four wheel drive.

A constant mesh gearbox has five parallel rotational axes. The input and output axes are not aligned. Some torque paths are via a sleeve rotatable on a shaft on one of said axes. Up to eight forward speeds are disclosed, with two very low ratios suitable for non-highway travel. The transmission is suitable for two and four wheel drive.

A vehicle having a four-wheel-drive system including an auxiliary portion that has an auxiliary driveshaft and drive means between the auxiliary driveshaft arranged to releasably connect a second group of wheels to the driveline via a releasable torque transmitting device. The releasable torque transmitting device is operable to allow slippage of the input portion with respect to the output portions, thereby to vary an amount of torque that is transmitted to the second group of wheels.

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Coventry, United Kingdom

Steve Mullane