Jaguar Land Rover Limited

Avl List Gmbh

Olivier Roques

Matthew Hancock

Russell Osborn

Thomas Valero

Ryan Bakewell

Samuel Rios

Gareth Jones

Bernhard Kometter

William Harrison

Matt Sullivan

Matthew Sullivan

David Copp

Christopher Blakesley

Lee Adcock

Christina O'Sullivan

Harry Sadler

Manuel Vilaboy

Wolfgang Meldt

Pierre-Gwenael Meslot

Stuart Dawes

David Tilling

Aspects of the present invention relate to method and to a control system for compensating for variable inertia in a vehicle powertrain, the method comprising: determining whether a torque source is coupled to a wheel; and applying a torque change in dependence on angular acceleration associated with the torque source, in dependence on whether the torque source is coupled to the wheel.

Control system for torque source inertia compensation, method, vehicle and computer program

Aspects of the present invention relate to a control system and to a method of controlling a total driven wheel torque for a vehicle by controlling torque output of a first torque source of the vehicle and of a second torque source of the vehicle, wherein the first torque source is configured to provide drive torque to a first axle of the vehicle for generating first axle wheel torque, wherein the second torque source is configured to provide drive torque to a second axle of the vehicle for generating second axle wheel torque, the method comprising: receiving a total torque request for total driven wheel torque; producing a first torque request for the first torque source and a second torque request for the second torque source, in dependence on the total torque request for the total driven wheel torque; and when at least one of the first and second torque requests is not satisfiable, modifying at least one of the first and second torque requests to enable a sum of the first axle wheel torque and the second axle wheel torque to approach or satisfy the total torque request, wherein the modification of at least one of the torque requests is controlled by at least one torque rate modifier configured to increase or decrease a rate of change of at least one of the torque requests.

Torque request modification strategies for vehicles

Aspects of the present invention relate to a method and to a control system for a vehicle, the method comprising: receiving a torque request for an internal combustion engine configured to mechanically couple to a first axle of the vehicle; determining a shortfall relative to the torque request, dependent on torque providable by the engine; and providing an output to control an electric machine to provide a compensation torque configured to compensate for the shortfall, wherein the electric machine is mechanically coupled to a second axle of the vehicle.

Compensation method for shortfall of engine torque

Aspects of the present invention relate to a method and to a control system for a vehicle, the vehicle comprising an internal combustion engine configured to provide torque to a first axle of the vehicle for generating first axle wheel torque, and an electric machine configured to provide torque to a second axle of the vehicle for generating second axle wheel torque, the method comprising: outputting a torque request for the engine and a torque request for the electric machine, the torque requests having a first ratio dependent on a required torque split between the first axle wheel torque and the second axle wheel torque, wherein received first axle wheel torque and received second axle wheel torque have a second variable ratio dependent on a difference between wheel torque response capabilities of the engine and of the electric machine; determining that a trigger condition is satisfied; and controlling, in dependence on satisfaction of the trigger condition, determination of the torque request for the electric machine such that deviation of the second ratio from the first ratio is inhibited.

Torque distribution strategies for hybrid vehicles

A controller can be configured to receive an indication of a measured speed of a vehicle, and determine whether a gradient on which the vehicle is located is below a threshold gradient. The controller can also be configured to provide an output signal to cause a brake of the vehicle to be automatically applied to hold the vehicle stationary, based at least in part on: the received indication of the measured speed of the vehicle being below a threshold speed; and the determination that the gradient is below the threshold gradient.

Controller for a vehicle and method

A controller () for a vehicle (), a system (), a vehicle (), a method (), a computer program () and a non-transitory computer-readable storage medium () are disclosed. The controller () comprises means to receive an indication of a user selected direction of travel and an indication of the direction of motion of the vehicle (). The controller () is configured to determine a proposed torque value in dependence on the direction of motion being an opposite direction to the selected direction of travel. The controller () also includes means to provide an output signal () configured to cause a motor () to apply torque, in dependence on the proposed torque value, to oppose motion in the opposite direction.

Controller and method of controlling speed of a vehicle

A controller for a vehicle is configured to determine the position of the accelerator pedal with respect to a reference accelerator pedal position (a); and either determine a torque output in dependence on an acceleration pedal map if the position of the accelerator pedal is greater than the reference accelerator pedal position (a); and, determine a torque output in dependence on a deceleration pedal map if the position of the accelerator pedal is less than the reference accelerator pedal position (a).

Controller for a vehicle based on accelerator pedal position

A controller for a vehicle, a system, a vehicle, a method, a computer program and a non-transitory computer-readable storage medium are disclosed. The controller is configured to receive an indication of a measured speed of the vehicle, and determine whether a gradient on which the vehicle is located is below a threshold gradient. The controller is also configured to provide an output signal to cause a brake of the vehicle to be automatically applied to hold the vehicle stationary, in dependence on: the received indication of the measured speed of the vehicle being below a threshold speed; and the determination that the gradient is below the threshold gradient.

Aspects of the present invention relate to a control module () for a vehicle powertrain. The powertrain comprises a transmission (), an engine () and an electric machine (). The control module () is configured to receive an input indicative of a requested upshift and in response to the received signal the control module () increases the torque output of the engine () prior to the start of the torque phase (). As the torque output of the engine () increases the control module () decreases the torque output of the electric machine () such that a constant wheel torque is applied to the wheels () during the torque phase () of the upshift.

Control module and control method for a vehicle powertrain

The present invention relates to a vehicle () having a torque generating machine (); and one or more driven wheel (W). A driveline () is provided for transmitting torque from the torque generating machine () to said one or more driven wheel. The driveline () includes a torque transmitting means (). A first decoupling mechanism () is operable to decouple the torque transmitting means () from the torque generating machine (). The first decoupling mechanism () is closed to couple the torque transmitting means () to the torque generating machine () and is opened to decouple the torque transmitting means () from the torque generating machine (). A second decoupling mechanism () is operable to decouple the torque transmitting means () from the one or more driven wheel. The second decoupling mechanism () is closed to couple the torque transmitting means () to the one or more driven wheel and is opened to decouple the torque transmitting means () from the one or more driven wheel. A controller () is provided having at least one electronic processor for controlling operation of the first and second decoupling mechanisms (). The at least one electronic processor (P) is configured to close the first decoupling mechanism (), to determine a target operating speed of the torque generating machine (), to control the operating speed of the torque generating machine () in dependence on the determined target operating speed and to close the second decoupling mechanism () when the operating speed of the torque generating machine () at least substantially matches the determined target operating speed. The present invention also relates to a corresponding method of controlling first and second decoupling mechanisms () to control the transmittal of torque from a torque generating machine () to one or more driven wheel of a vehicle ().

Vehicle apparatus and method

The present invention relates to a vehicle () having a torque generating machine (); and one or more driven wheel (W). A driveline () is provided for transmitting torque from the torque generating machine () to said one or more driven wheel. The driveline () includes a torque transmitting means (). A first decoupling mechanism () is operable to decouple the torque transmitting means () from the torque generating machine (). The first decoupling mechanism () is closed to couple the torque transmitting means () to the torque generating machine () and is opened to decouple the torque transmitting means () from the torque generating machine (). A second decoupling mechanism () is operable to decouple the torque transmitting means () from the one or more driven wheel. The second decoupling mechanism () is closed to couple the torque transmitting means () to the one or more driven wheel and is opened to decouple the torque transmitting means () from the one or more driven wheel. A controller () is provided having at least one electronic processor for controlling operation of the first and second decoupling mechanisms (). The at least one electronic processor (P) is configured to close the second decoupling mechanism () to couple the torque transmitting means () to the one or more driven wheel, determine a target operating speed of the torque generating machine (), control an operating speed of the torque generating machine () in dependence on the determined target operating speed and close the first decoupling mechanism () when the operating speed of the torque generating machine () at least substantially matches the determined target operating speed. The present invention also relates to a corresponding method of controlling first and second decoupling mechanisms () to control the transmittal of torque from a torque generating machine () to one or more driven wheel of a vehicle ().

The present disclosure relates to a vehicle () having a torque generating machine (); and one or more driven wheel (W). A driveline () is provided for transmitting torque from the torque generating machine () to said one or more driven wheel. The driveline () includes a torque transmitting means (). A first decoupling mechanism () is operable to decouple the torque transmitting means () from the torque generating machine (). The first decoupling mechanism () is closed to couple the torque transmitting means () to the torque generating machine () and is opened to decouple the torque transmitting means () from the torque generating machine (). A second decoupling mechanism () is operable to decouple the torque transmitting means () from the one or more driven wheel. The second decoupling mechanism () is closed to couple the torque transmitting means () to the one or more driven wheel and is opened to decouple the torque transmitting means () from the one or more driven wheel. A controller () is provided having at least one electronic processor for controlling operation of the first and second decoupling mechanisms (). The at least one electronic processor (P) being configured to determine a target operating speed of the torque generating machine (), control the operating speed of the torque generating machine () in dependence on the determined target operating speed, close the first decoupling mechanism () when the operating speed of the torque generating machine () at least substantially matches the determined target operating speed and close the second decoupling mechanism () after closing the first decoupling mechanism (). The present disclosure relates to a corresponding method of controlling first and second decoupling mechanisms () to control the transmittal of torque from a torque generating machine () to one or more driven wheel of a vehicle ().

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Coventry, United Kingdom

Olivier Roques