Jaguar Land Rover Limited

Matthew Hancock

Olivier Roques

Alex Plianos

Steve Liggins

Simon Message

Gareth Jones

Marco D'Amato

Blake Hemingway

Ryan Bakewell

Christopher Blakesley

Daniele Giovanelli

Samuel Rios

Lee Adcock

Matthew Sullivan

David Copp

William Harrison

Rodolfo Oliveira Jaccoud

Simon Hegarty

Richard Kirkman

Ratheev Kumari Nair

Minsuk Shin

Olivier Jean Brice Roques

Andrew Bradley

Neil Dixon

Riccardo Fracchia

Matt Sullivan

Christina O'Sullivan

Christopher Green

Andy Mould

Anthony Satterthwaite

Manoj Lao

Graham Berney-Dale

Nigel Johnson

Geoff Hannis

Viorel Radu

Guy Robinson

Ryan McIntyre

Nicolas Godlewski

Javier Villegas

Christina O'sullivan

Manoj Lad

Zahir Ismail

Jose Jimmy

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

Embodiments of the present invention provide a control system () for an electric machine () of a vehicle, the control system comprising one or more controllers, the control system comprising input means () to receive a torque communication signal () indicative of torque communication through a belt () associated with the electric machine, processing means () arranged to determine a torque limit for the electric machine in dependence on the torque communication signal and a first torque threshold, and output means () arranged to output a torque limit signal () in dependence on the torque limit to control the torque communicated through the belt associated with the electric machine.

Apparatus and method for controlling an electric machine

Aspects of the present invention relate to a method and to a control system for controlling an electric traction motor of a vehicle, the control system comprising one or more controllers, wherein the control system is configured to: limit a rate of change of torque requested from the electric traction motor for changing speed towards a speed target, in dependence on a lash crossing protection rate limiter; and upon removal of the limit prior to the speed reaching the speed target, inhibit initial increase of a torque requested from the electric traction motor for changing speed towards the speed target.

Hybrid vehicle speed and torque control

Aspects of the present invention relate to a method () and to a control system () for controlling at least one electric machine () of a vehicle () to support diagnostic testing of a vehicle system () comprising an internal combustion engine (), wherein the method () comprises: controlling a torque output () of the at least one electric machine () to allow a vehicle drive torque demand () to be met while the internal combustion engine () is operated within at least one torque threshold () for the diagnostic testing or operated at a torque setpoint () for the diagnostic testing.

Controlling an electric machine to support diagnostic testing

Embodiments of the present invention provide An electric machine control system for a vehicle, the electric machine control system comprising one or more controllers, wherein the vehicle comprises an electric machine arranged to be selectively coupleable to provide torque to at least one wheel of an axle of the vehicle, the control system comprising input means to receive a speed signal indicative of a speed of the vehicle, processing means arranged to determine a coupling state of the electric machine to the at least one wheel of the axle in dependence on the speed signal, and output means arranged to output a coupling signal indicative of the coupling state to control coupling of the electric machine to the at least one wheel of the axle.

Apparatus and method for controlling an electric machine of a vehicle

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

A controller is provided for a vehicle having front and rear axles, each axle having two wheels, and first and second propulsion units. The controller controls the first and second propulsion units to generate a combined torque with reference to a total requested torque. The controller is configured to: receive a torque request signal; receive traction signals indicating available traction at at least one wheel; determine a traction torque range defined by a maximum and minimum torque for at least one of the at least first or second propulsion units in dependence on one or more of the traction signals; determine a proposed distribution of torque between each of the at least first and second propulsion units with reference to the total requested torque; and determine a proposed torque to be generated by each of the at least first and second propulsion units in dependence on the proposed distribution of torque.

Battery electric vehicle (BEV) torque split control

A control system is arranged to: receive energy information for a vehicle; divide route data into a plurality of route segments comprising first and second route segments; wherein each route segment is indicative of a portion of the route, a first route segment precedes a second route segment along the route, and the length of the first portion is smaller than the length of the second portion of the route; determine an energy requirement for each route segment in dependence on the energy information; and output the energy requirement for the plurality of route segments.

Distributed control system for predictive route energy estimation

Embodiments of the present invention provide an electric machine control system for a vehicle, the electric machine control system comprising one or more controllers, wherein the vehicle comprises an electric machine arranged to be selectively coupleable to provide torque to at least one wheel of an axle of the vehicle, the control system comprising input means to receive a speed signal indicative of a speed of the vehicle, processing means arranged to determine a desired coupling state () of the electric machine to the at least one wheel of the axle in dependence on the speed signal, wherein the processing means is arranged to determine the desired coupling state as coupled in dependence on the speed signal being indicative of a vehicle speed equal to or below a first low-speed threshold () and to determine the desired coupling state as no-request in dependence on the speed signal being indicative of a vehicle speed above a second low-speed threshold (), wherein the second low-speed threshold represents a vehicle speed greater than the first low-speed threshold, and output means arranged to output a coupling signal indicative of a request to couple the electric machine to the at least one wheel of the axle in dependence on the desired coupling state being coupled.

System and method for controlling an electric machine for a vehicle

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 control system () for controlling a power inverter () of a vehicle (), the vehicle comprising a first torque source (), the power inverter for an electric machine () coupled to the first torque source, and a second torque source (), the control system comprising one or more controllers (), wherein the control system is configured to:

Predictive control of a vehicle power inverter

An electric machine control system for a vehicle having an electric machine arranged to be selectively couplable to provide torque to a wheel of an axle. An input receives a fault-derived coupling state request signal and a further coupling state request signal. Each coupling state request signal is indicative of a request for a coupling state of the electric machine to the wheel of the axle. A processor determines the coupling state of the electric machine to the wheel of the axle in dependence on the fault-derived coupling state request signal and the further coupling state request signal. The processor determines the coupling state of the electric machine in precedence on the fault-derived coupling state request signal over the further coupling state request signal. A coupling signal indicative of the determined coupling state is output to control coupling of the electric machine to the wheel of the axle.

Apparatus and method for controlling an electric machine for a vehicle

A method and a control system for controlling movement of a vehicle to provide vehicle creep, the vehicle having an engine and an electric traction motor, and the control system having one or more controllers. The control system is configured to: while a torque path between the engine and a first set of vehicle wheels is disconnected, control the electric traction motor to provide tractive torque to a second set of vehicle wheels to automatically move the vehicle to provide electric vehicle creep. The electric vehicle creep is controlled by a mathematical model of engine creep torque that would be provided by the engine when the torque path between the engine and the first set of vehicle wheels is connected.

Hybrid vehicle creep control

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

Embodiments of the present invention provide an electric machine control system for a vehicle, the electric machine control system comprising one or more controllers, wherein the vehicle comprises an electric machine arranged to be selectively coupleable to provide torque to at least one wheel of an axle of the vehicle, the control system comprising input means arranged to receive a speed signal () indicative of a speed of the vehicle and a status signal () indicative of a status of a coupling of the electric machine to the at least one wheel of an axle of the vehicle, output means () arranged to output a coupling signal to control coupling of the electric machine to the at least one wheel of the axle, and processing means arranged to determine () a coupling state of the electric machine to the at least one wheel of the axle and to control the output means to output () a coupling signal indicative of the determined coupling state, wherein the processing means is arranged, in dependence on the status signal being indicative of a failure () to change the coupling state of the electric machine to the at least one wheel of the axle in dependence on a change in the determined coupling state, to control the output means to output the coupling signal () indicative of a retry () of the change in the coupling state in dependence on the speed signal.

Growing community of inventors

Coventry, United Kingdom

Matthew Hancock