Method and system for control of a clutch
AssigneeScania CV AB
InventorsPeter Juhlin-Dannfelt, Mikael Öun
Life of this patent
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Abstract
A method for control of an automatically controlled clutch when setting a vehicle in motion on a running surface: the vehicle includes a combustion engine for generating driving force transmitted to at least one powered wheel, and a throttle control for demanding driving force from the engine. The magnitude of the driving force demanded from the engine is controlled by a driver of the vehicle by means of the throttle control. The method includes a step, when a first criterion representing the grip of the powered wheels on the running surface is fulfilled, of opening the automatically controlled clutch if the driver uses the throttle control to reduce the demand for driving force from the engine.
Claims15
A method for controlling an automatically controlled clutch when setting a vehicle in motion on a running surface, wherein the vehicle comprises a combustion engine for generating driving force for transmission to at least one powered wheel, and a throttle control for demanding driving force from the engine responsive to driver actuation of the throttle control, the method comprising:
- controlling a magnitude of the driving force demanded from the engine responsive to operation of the throttle control;
- determining, when setting the vehicle in motion on the running surface from a stationary position or during a vehicle rocking condition, that a first criterion is fulfilled, the first criterion representing a grip of the at least one powered wheel on the running surface;
- determining that the throttle control is being released;
- and
- releasing the automatically controlled clutch when both of the following conditions are met:
- the determination is made that the first criterion is fulfilled and the determination is made that the throttle control is being released.
A non-transitory computer-readable medium incorporating a program of instructions that when executed by a computer causes the computer to carry out a method for controlling an automatically controlled clutch when setting a vehicle in motion on a running surface, wherein the vehicle comprises a combustion engine for generating driving force for transmission to at least one powered wheel, and a throttle control for demanding driving force from the engine responsive to driver actuation of the throttle control, the method comprising:
- controlling a magnitude of the driving force demanded from the engine responsive to operation of the throttle control;
- determining, when setting the vehicle in motion on the running surface from a stationary position or during a vehicle rocking condition, that a first criterion is fulfilled, the first criterion representing a grip of the at least one powered wheel on the running surface;
- determining that the throttle control is being released;
- and
- releasing the automatically controlled clutch when both of the following conditions are met:
- the determination is made that the first criterion is fulfilled and the determination is made that the throttle control is being released.
A system for controlling an automatically controlled clutch when setting a vehicle in motion on a running surface, wherein the vehicle has a combustion engine for generating driving force for transmission to the at least one powered wheel, and a throttle control for demanding driving force from the engine, wherein the magnitude of the driving force demanded from the engine is controlled responsive to driver actuation of the throttle control, the system comprising:
- a control unit configured to determine, when setting the vehicle in motion on the running surface from a stationary position or during a vehicle rocking condition, that a first criterion is fulfilled, the first criterion representing a grip of the at least one powered wheel on the running surface, and to determine that the throttle control is being released;
- and
- a clutch opener positioned and configured to open the automatically controlled clutch, when both of the following conditions are met:
- the determination is made that the first criterion is fulfilled, and the determination is made that the throttle control is being released.
Dependencies are inferred from the claim text.