Vehicle speed control system and method
AssigneeJaguar Land Rover Limited
InventorsJames Kelly, Navid Shamshiri, Edward Rycroft
Life of this patent
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Abstract
Embodiments of the present invention provide a vehicle speed control system operable to cause a vehicle to operate in accordance with a target speed value, the system being operable automatically to perform a direction change operation wherein the system causes a transmission of the vehicle to adopt a configuration corresponding to travel in an opposite direction to the instant configuration when the vehicle speed does not exceed a prescribed transmission direction change speed.
Claims24
A vehicle speed control system operable to cause a vehicle to operate in accordance with a target speed value, the system being operable automatically to:
- perform a direction change operation wherein the system causes a speed of the vehicle to reduce to a value not exceeding a direction change speed limit value, being a maximum speed at which a transmission of the vehicle is permitted to adopt a configuration corresponding to travel in an opposite direction to an instant configuration, if the vehicle speed exceeds the direction change speed limit value when the direction change operation is commenced;
- to cause a transmission of the vehicle to adopt a configuration corresponding to travel in the opposite direction to the instant configuration when the speed has reduced to a value not exceeding the direction change speed limit value, and
- accelerate the vehicle from rest following a change in configuration of the transmission from travel in a first direction to travel in a second direction opposite the first at a moment selected in dependence on suspension system articulation.
A method of controlling a vehicle by means of a speed control system, comprising:
- causing a vehicle to operate in accordance with a target speed value;
- and
- automatically performing a direction change operation, whereby performing the direction change operation comprises causing a speed of the vehicle to reduce to a value not exceeding a direction change speed limit value, being a maximum speed at which a transmission of the vehicle is permitted to adopt a configuration corresponding to travel in an opposite direction to an instant configuration, if the vehicle speed exceeds the direction change speed limit value when the direction change operation is commenced;
- performing the direction change operation further comprises causing a transmission of the vehicle to adopt a configuration corresponding to travel in an opposite direction to the instant configuration when the vehicle speed does not exceed the direction change speed limit value;
- and
- accelerating the vehicle from rest following a change in configuration of the transmission from travel in a first direction to travel in a second direction opposite the first at a moment selected in dependence on suspension system articulation.
Dependencies are inferred from the claim text.