Tire pressure vehicle speed limiting
First Claim
Patent Images
1. A method of limiting vehicle speed comprising:
- sensing the air pressure in at least one tire;
sensing temperature in the at least one tire;
sensing vehicle speed;
determining at least one threshold based on at least one parameter of vehicle operation;
determining if the vehicle speed is appropriate for each tire based on the sensed tire air pressure, the sensed tire temperature and on each determined threshold; and
automatically controlling vehicle speed if the vehicle speed is not appropriate for each tire.
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Accused Products
Abstract
Tire over- or under-inflation can create problems in vehicle operation. To limit the effects of out-of-range tire pressure, vehicle speed is automatically controlled if the vehicle speed is not appropriate for either or both of measured tire air pressure and measured tire temperature.
65 Citations
24 Claims
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1. A method of limiting vehicle speed comprising:
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sensing the air pressure in at least one tire;
sensing temperature in the at least one tire;
sensing vehicle speed;
determining at least one threshold based on at least one parameter of vehicle operation;
determining if the vehicle speed is appropriate for each tire based on the sensed tire air pressure, the sensed tire temperature and on each determined threshold; and
automatically controlling vehicle speed if the vehicle speed is not appropriate for each tire. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system for limiting vehicle speed comprising:
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at least one tire pressure sensor generating a pressure signal based on the pressure of air within a tire;
at least one tire temperature sensor generating a temperature signal based on the temperature within the tire;
a vehicle speed sensor generating a signal based on vehicle speed;
a power plant causing the vehicle to move at the vehicle speed based on power plant control signals; and
control logic in communication with each tire pressure sensor, the tire temperature sensor, the vehicle speed sensor and the power plant, the control logic generating at least one power plant control signal to automatically control vehicle speed if the vehicle speed is not appropriate for at least one tire based on the sensed tire air pressure, sensed tire temperature and on at least one vehicle operating condition. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method of limiting vehicle speed comprising:
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determining tire pressure in at least one tire based on pressure sensed within the tire;
determining vehicle speed;
automatically limiting vehicle maximum speed if the vehicle speed is not appropriate for each tire based on the sensed tire air pressure;
determining tire temperature in the at least one tire based on temperature sensed within the tire;
automatically limiting vehicle maximum speed if the vehicle speed is not appropriate for each tire based on the sensed tire temperature; and
automatically limiting vehicle maximum speed if the vehicle speed is not appropriate for each tire based on the sensed tire temperature and based on the sensed tire pressure.
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Specification