Vehicle speed control
First Claim
Patent Images
1. A method for controlling the speed of a vehicle comprising:
- sensing, via an electronic controller and a sensor, a position of an operator input;
determining, via the controller and the sensor, whether the position of the operator input is above or below a first threshold;
engaging, via the controller and the sensor, a retarder only upon the position of the operator input falling below a first threshold;
modifying, via the controller and the sensor, a retarding force exerted by the retarder based on the position of the operator input while the retarder is engaged and the position of the operator input is below a second threshold above the first threshold; and
disengaging, via the controller and the sensor, the retarder upon the position of the operator input rising above the second threshold.
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Accused Products
Abstract
A method for controlling vehicle speed comprises sensing a position of an operator input, engaging a retarder upon the position falling below a first threshold, modifying a retarding force exerted by the retarder based on the position while the retarder is engaged and the position is below a second threshold, and disengaging the retarder upon the position rising above the second threshold.
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Citations
20 Claims
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1. A method for controlling the speed of a vehicle comprising:
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sensing, via an electronic controller and a sensor, a position of an operator input; determining, via the controller and the sensor, whether the position of the operator input is above or below a first threshold; engaging, via the controller and the sensor, a retarder only upon the position of the operator input falling below a first threshold; modifying, via the controller and the sensor, a retarding force exerted by the retarder based on the position of the operator input while the retarder is engaged and the position of the operator input is below a second threshold above the first threshold; and disengaging, via the controller and the sensor, the retarder upon the position of the operator input rising above the second threshold. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A vehicle comprising:
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an engine; a retarder; an operator input; a sensor sensing a position of the operator input; and an electronic controller configured to receive position input from the sensor and command engagement of the retarder only upon a position of the operator input falling below a first threshold, command disengagement of the retarder upon the position of the operator input rising above a second threshold above the first threshold, and command a modification of a retarding force exerted by the retarder based on the position of the operator input while the retarder is engaged. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for controlling the speed of a vehicle comprising:
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sensing a vehicle propel command via a sensor; entering a first mode only upon an electronic controller receiving input from the sensor of the vehicle propel command falling below a first threshold; engaging, via the controller, a retarder while in the first mode; modifying, via the controller, a retarding force exerted by the retarder based on the vehicle propel command while in the first mode; entering, via the controller, a second mode upon the vehicle propel command rising above a second threshold above the first threshold; disengaging, via the controller, the retarder while in the second mode; commanding, via the controller, a target based on the vehicle propel command while in the second mode; and adjusting, via the controller, the target while in the second mode. - View Dependent Claims (17, 18, 19, 20)
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Specification