System for reducing powertrain reaction torque
First Claim
1. A method of controlling reaction torque transmitted through a high inertia vehicle powertrain during a rapid vehicle braking event, comprising the steps of:
- detecting a rapid braking event in which a brake force is applied to at least one vehicle drive wheel produces reaction torque that is transmitted from the drive wheel through the high inertia powertrain; and
,reducing upstream of the drive wheel in the powertrain, the reaction torque produced by the applied brake force when a rapid braking event is detected.
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0 Petitions
Accused Products
Abstract
A system is provided for controlling the inertia of a vehicle'"'"'s powertrain during sudden braking events. Torque generated by rapid deceleration of the vehicle'"'"'s drive wheels during braking is prevented from being transmitted through the vehicle'"'"'s driveline by a clutch which disengages the drive wheels from high effective inertia components in the driveline. The clutch is actuated by a signal produced by any of several sensors on the vehicle which sense a sudden braking event. Driveline speed is adjusted to match drive wheel speed before the clutch is deactivated to reengage driveline with the drive wheels.
25 Citations
14 Claims
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1. A method of controlling reaction torque transmitted through a high inertia vehicle powertrain during a rapid vehicle braking event, comprising the steps of:
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detecting a rapid braking event in which a brake force is applied to at least one vehicle drive wheel produces reaction torque that is transmitted from the drive wheel through the high inertia powertrain; and
,reducing upstream of the drive wheel in the powertrain, the reaction torque produced by the applied brake force when a rapid braking event is detected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13)
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12. The method of 9, wherein actuating the clutch comprises disconnecting the drive wheel from a portion of the powertrain.
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14. The method of 13, wherein reconnecting the drive wheel comprises:
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comparing a speed of the drive wheel with a speed of the powertrain, adjusting the speed of the powertrain to a preselected range based in part on the drive wheel speed.
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Specification