Control system and method for precise disengagement of a clutch
AssigneeVolvo Truck Corporation
InventorsOscar OLESEN, Andreas HAMILTON, Magnus BLANCKENFIELD, Simon LILLSKOG
Life of this patent
Estimating the term…
Loading patent…
AssigneeVolvo Truck Corporation
InventorsOscar OLESEN, Andreas HAMILTON, Magnus BLANCKENFIELD, Simon LILLSKOG
Estimating the term…
A clutch control system provides precise clutch disengagement. The disengagement of the clutch is preceded by a deliberate reduction in engine torque. The clutch control system has a friction clutch capable of transitioning between a fully open, a partially open, and a fully closed position; a control unit configured to: monitor the reduction in engine torque to continuously obtain a current engine torque, and determine an effectively closed position of the clutch. The effectively closed position is a partially open position having a torque capacity equal to the current engine torque, thereby preventing clutch slip at the effectively closed position. A clutch actuator operates the friction clutch at the effectively closed position while the current engine torque is above zero, and disengages the friction clutch to a fully open position as the current engine torque approaches zero.
A clutch control system for precise disengagement of a clutch, wherein the disengagement of the clutch is preceded by a deliberate reduction in engine torque, during which the engine torque transitions from a positive value to a negative value and where the clutch is configured to disengage at a point of zero engine torque, the clutch control system comprising:
A method for precise disengagement of a friction clutch, wherein the disengagement of the clutch is preceded by a deliberate reduction in engine torque during which the engine torque transitions from a positive value to a negative value and where the clutch is configured to disengage at a point of zero engine torque, the method comprising:
Dependencies are inferred from the claim text.