Jaguar Land Rover Limited

Stephen Stacey

Elliot Hemes

Paul Malcolm Darnell

Adam Moorcroft

Ian Cooper

Embodiments of the present invention provide a controller for a starter motor operable to receive a first input indicative of an engine shutdown being required, a second input indicative of a change-of-mind event having occurred after initiation of engine shutdown and a third input indicative of the engine position. After receipt of the first input the controller is operable to monitor the third input and to determine an expected engine rotation direction indicative of the expected rotation direction of the engine after a predetermined delay. If the expected engine rotation direction is positive and the second input is received then the controller is configured to control the output means to cause the starter motor of the engine to be actuated upon receipt of the second input. If the expected engine rotation direction is negative and the second input is received then the controller is configured to delay controlling the output means to cause the starter motor of the engine to be actuated until a determination is made that the expected rotation direction is positive. Advantageously, the controller calculates the expected engine rotation direction before receipt of the input indicative of the change-of-mind event having occurred, thereby reducing the time required to determine whether or not the starter motor can be actuated.

Controller and method for operating starter motor

A method and system for blending between different torque maps of a vehicle in a smooth and progressive manner. Blending is delayed if the vehicle driver cannot detect that blending is taking place, for example, when the difference between a source map and target map is below a predetermined threshold.

Adaptive control of motor vehicle powertrain

A method and system for blending between different torque maps of a vehicle so that step changes of torque output are avoided as accelerator pedal position is changed. Different blending rates are provided so as to reduce the blending time if driver demand is in the direction of torque change.

A method and system for blending between torque maps of a source propulsion of a vehicle. The method and system are particularly applicable to automatic selection of an alternative torque map in response to a change of vehicle operating condition, for example, a change of terrain. Blending may substantially avoid a step change in response of the source of propulsion as accelerator position is changed.

A method and system is disclosed for blending between torque maps of a source of propulsion of a vehicle. Embodiments of the present invention are particularly applicable to automatic selection of an alternative torque map in response to a change of vehicle operating condition, for example a change of terrain. Blending according to embodiments of the present invention may substantially avoid a step change in response of the source of propulsion as accelerator position is changed.

A method and system is disclosed for blending between different torque maps of a vehicle in a smooth and progressive manner. Blending is delayed if the vehicle driver cannot detect that blending is taking place, for example when the difference between a source map and target map is below a predetermined threshold.

A method and system is disclosed for blending between different torque maps of a vehicle so that step changes of torque output are avoided as accelerator pedal position is changed. The invention provides different blending rates so as to reduce the blending time if driver demand is in the direction of torque change.

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Mansfield, United Kingdom

Stephen Stacey