Vehicle traction control based driveline thermal protection
First Claim
1. A system for controlling temperatures in a driveline assembly of a vehicle, comprising:
- a traction control system including a controller configured to;
determine a first operating temperature associated with the driveline assembly of the vehicle, the driveline assembly comprising a forward axle, a rear axle and a power transfer device configured to transmit power from a power source of the vehicle to the forward and rear axles;
compute a first gain factor responsive to the first operating temperature the first gain factor capable of assuming any of at least three different values;
adjust a first control parameter value of the traction control system responsive to the first gain factor; and
,generate a first control signal from the traction control system responsive to the first control parameter value, the first control signal configured to adjust at least one of an output torque of the power source and a braking force of a brake of the vehiclewherein the first gain factor comprises a ratio of the first operating temperature relative to a difference between a maximum operating temperature for the driveline assembly of the vehicle and a minimum operating temperature for the driveline assembly of the vehicle.
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Accused Products
Abstract
A method and system for controlling temperatures in a driveline assembly of a vehicle are provided. In one embodiment, the method includes determining an operating temperature associated with the driveline assembly of the vehicle, the driveline assembly comprising forward and rear axles and a power transfer device configured to transmit power from a power source of the vehicle to the forward and rear axles. The method further includes computing a gain factor responsive to the operating temperature, adjusting a control parameter value of a traction control system of the vehicle responsive to the gain factor, and generating a control signal from the traction control system responsive to the control parameter value, the control signal configured to adjust at least one of an output torque of the power source and a braking force of a brake of the vehicle.
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Citations
19 Claims
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1. A system for controlling temperatures in a driveline assembly of a vehicle, comprising:
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a traction control system including a controller configured to; determine a first operating temperature associated with the driveline assembly of the vehicle, the driveline assembly comprising a forward axle, a rear axle and a power transfer device configured to transmit power from a power source of the vehicle to the forward and rear axles; compute a first gain factor responsive to the first operating temperature the first gain factor capable of assuming any of at least three different values; adjust a first control parameter value of the traction control system responsive to the first gain factor; and
,generate a first control signal from the traction control system responsive to the first control parameter value, the first control signal configured to adjust at least one of an output torque of the power source and a braking force of a brake of the vehicle wherein the first gain factor comprises a ratio of the first operating temperature relative to a difference between a maximum operating temperature for the driveline assembly of the vehicle and a minimum operating temperature for the driveline assembly of the vehicle.
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2. A method for controlling temperatures in a driveline assembly of a vehicle, comprising the steps of:
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determining, in a controller of a traction control system of the vehicle, a first operating temperature associated with the driveline assembly of the vehicle responsive to an output of at least one sensor, the driveline assembly comprising a forward axle, a rear axle and a power transfer device configured to transmit power from a power source of the vehicle to the forward and rear axles; computing, in the controller, a first gain factor responsive to the first operating temperature, the first gain factor capable of assuming any of at least three different values; adjusting a first control parameter value of the traction control system of the vehicle responsive to the first gain factor; and
,generating a first control signal from the traction control system responsive to the first control parameter value, the first control signal configured to adjust at least one of an output torque of the power source and a braking force of a brake of the vehicle wherein the first gain factor comprises a ratio of the first operating temperature relative to a difference between a maximum operating temperature for the driveline assembly of the vehicle and a minimum operating temperature for the driveline assembly of the vehicle. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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10. A method for controlling temperatures in a driveline assembly of a vehicle, comprising the steps of:
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determining, in a controller of a traction control system of the vehicle, a first operating temperature associated with the driveline assembly of the vehicle responsive to an output of at least one sensor, the driveline assembly comprising a forward axle, a rear axle and a power transfer device configured to transmit power from a power source of the vehicle to the forward and rear axles; computing, in the controller, a first gain factor responsive to the first operating temperature, the first gain factor capable of assuming any of at least three different values; adjusting a first control parameter value of the traction control system of the vehicle responsive to the first gain factor; and
,generating a first control signal from the traction control system responsive to the first control parameter value, the first control signal configured to adjust at least one of an output torque of the power source and a braking force of a brake of the vehicle wherein the first control parameter value comprises a maximum speed differential between first and second wheels of the vehicle at which the first control signal is generated by the traction control system.
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Specification