Method and an assembly for vehicle thermal management
First Claim
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1. A method for operating a vehicle having a torque producing assembly, the method comprising:
- defining a maximum temperature value of the torque producing assembly;
operating the torque producing assembly at a certain speed;
monitoring a change in temperature of the torque producing assembly;
using the monitored change in temperature to ascertain the amount of time in which the maximum temperature value will be achieved; and
reducing the certain speed of the torque producing assembly when the ascertained amount of time is less than a certain value.
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Abstract
A method and an apparatus are provided which use, or which calculate, a temperature gradient of a portion of a vehicle to determine a value equal to, or representative of, a time before a maximum allowable operating temperature is reached by the portion. If the value is less than a certain threshold, the apparatus reduces the operating speed of the portion and, in one embodiment, provides a warning signal to an operator of the vehicle.
34 Citations
16 Claims
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1. A method for operating a vehicle having a torque producing assembly, the method comprising:
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defining a maximum temperature value of the torque producing assembly;
operating the torque producing assembly at a certain speed;
monitoring a change in temperature of the torque producing assembly;
using the monitored change in temperature to ascertain the amount of time in which the maximum temperature value will be achieved; and
reducing the certain speed of the torque producing assembly when the ascertained amount of time is less than a certain value. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for operating a vehicle having a component to be regulated, the method comprising:
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determining a temperature difference between a current component temperature and a predetermined temperature;
calculating a time for the component temperature to reach the predetermined temperature, the time calculation being based on a predetermined component temperature gradient and the determined temperature difference; and
regulating operation of the component based on the calculated time, wherein the component operates at a certain speed, and the regulation of the component operation includes reducing the certain speed of the component. - View Dependent Claims (8, 9, 10, 11)
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12. A method for operating a vehicle having a component to be regulated, the method comprising:
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determining a temperature difference between a current component temperature and a predetermined temperature;
calculating a time for the component temperature to reach the predetermined temperature, the time calculation being based on a predetermined component temperature gradient and the determined temperature difference; and
regulating operation of the component based on the calculated time, wherein the component produces a certain torque, and the regulation of the component operation includes reducing the certain torque of the component. - View Dependent Claims (13, 14, 15, 16)
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Specification