Jaguar Land Rover Limited

Simon Message

Matthew Hancock

Steve Liggins

Richard Kirkman

Joseph Walsh

Manoj Lao

Manoj Lad

Geoff Hannis

A controller for a motor vehicle powertrain, the controller being configured to control the amount of torque generated by each of a plurality of drive torque sources, each drive torque source being coupled via a respective torque transfer arrangement to a respective group of one or more wheels, the controller being configured to cause a first of the drive torque sources, during acceleration, deceleration and substantially constant speed operation, substantially continually to apply a drive torque to a first group of one or more wheels to which the first drive torque source is coupled acting in a first direction relative to a longitudinal axis of the vehicle and causes a second of the drive torque sources, during acceleration, deceleration and substantially constant speed operation, substantially continually to apply a drive torque to a second group of one or more wheels to which the second drive torque source is coupled, the direction of drive torque applied to the second group being in a second direction opposite the first such that a net drive torque applied to the first and second group in combination corresponds substantially to a predetermined drive torque demand value, the predetermined torque demand value being determined at least in part by reference to a torque demand signal received by the controller.

Controller for a motor vehicle and method

A method for controlling a regeneration procedure in an exhaust system after treatment device in a vehicle, the method comprising: determining a location of the vehicle, obtaining data related to the location, determining, based on the data related to the location a probability of completing the regeneration procedure on the vehicle at said determined location, controlling the vehicle to perform the regeneration procedure in dependence on the probability of completing the regeneration procedure.

Method of controlling a regeneration procedure on a vehicle

A controller for a motor vehicle powertrain, the controller being configured to control the amount of torque generated by each of a plurality of drive torque sources in order to generate a net torque corresponding to a predetermined torque demand value, the predetermined torque demand value being determined at least in part by reference to a torque demand signal received by the controller, each drive torque source being coupled via a respective torque transfer arrangement to a respective group of one or more wheels, the controller being configured to cause at least one drive torque source to generate positive or negative torque in dependence on the predetermined torque demand value and to cause the drive torque source to undergo a torque reversal operation in which the direction of torque generated by the at least one drive torque sources changes from one direction to the other, the controller being configured wherein, during a torque reversal operation, the controller limits the rate of change of torque generated by the at least one of the plurality of drive torque sources as the amount of torque generated passes through zero and attempts to compensate for the reduction in rate of change of torque by a corresponding change in the amount of torque generated by one or more other of the plurality of drive torque sources.

The invention relates to a controller for a hybrid electric vehicle having an engine, electric propulsion means powered by energy storage means and electric generator means operable to be driven by the engine to recharge the energy storage means, the controller being operable to: receive a signal indicative of a required hybrid driving mode; receive a signal indicative of a state of charge of the energy storage means; determine which of a plurality of powertrain operating modes is appropriate for vehicle operation at a given moment, the powertrain operating modes including an engine charging mode in which the engine drives the generator means to recharge the energy storage means and an electric vehicle (EV) mode in which the engine is switched off and the electric propulsion means is operable to develop drive torque to drive the vehicle; and cause the powertrain to assume the appropriate powertrain operating mode and the required hybrid driving mode, wherein the controller is operable to determine which of the plurality of powertrain operating modes is appropriate for vehicle operation in dependence at least in part on the signal indicative of the instant state of charge of the energy storage means and a reference value of state of charge, the controller being operable to set the reference value of state of charge to one of a plurality of different respective values in dependence on the signal indicative of the required hybrid driving mode.

Hybrid electric vehicle controller and method

A hybrid electric vehicle is capable of direct drive by internal combustion engine, electric motor, or both. In order to provide a consistent overrun response, a torque controller determines an appropriate deceleration characteristic according to, for example, transmission speed ratio, vehicle gradient and vehicle mass, and commands the electric motor and the engine to contribute a negative torque which meets the required deceleration characteristic. A 'tip' function modifies the characteristic in the event of a change commanded by the vehicle driver, for example a change of speed ratio.

Dynamic deceleration control for hybrid vehicle to achieve a consistent overrun response

Embodiments of the present invention provide a controller for a vehicle having a powertrain comprising an engine, the controller being operable to: receive a signal indicative of an amount of powertrain drive torque required to be applied to one or more wheels, powertrain wheel drive torque demand; and receive a signal indicative of an amount of powertrain load torque required to support an auxiliary powertrain load, powertrain auxiliary load torque demand, that is in addition to the powertrain wheel drive torque demand, the controller being operable to limit the amount of powertrain drive torque available to the one or more wheels and to limit the amount of powertrain load torque available to support the auxiliary load such that when a sum of the amount of powertrain wheel drive torque demand and the amount of auxiliary load torque demand exceeds the available powertrain torque, the one or more auxiliary loads may still receive at least a prescribed minimum auxiliary load powertrain torque amount.

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Coventry, United Kingdom

Simon Message