CTI program pressure setting override
AssigneeEaton Corporation
InventorGary R. Schultz
Life of this patent
Estimating the term…
Abstract
An adaptive tire pressure control strategy for a central tire inflation system 10 wherein the programmed demand pressure setting P.sub.D may be increased automatically if certain criteria are met. These criteria are indicative of a running condition wherein tire temperature may be increasing to unacceptable levels due to underinflation. Additionally, air may also be added to tires in this condition in order to increase the load capacity of the tire, reduce tire temperature and prolong tire life.
Claims19
In a vehicle central tire inflation system wherein the fluid pressure in at least one inflatable tire is maintained at a preselected demand pressure setting P.sub.D, a method of adaptively controlling said inflation system to account for heat induced rises in tire pressure comprising the steps:
- measuring the pressure of said fluid in said tire to obtain a current tire pressure P.sub.C ;
- comparing said current tire pressure P.sub.C, to said demand pressure setting P.sub.D,
- then, as a result of the comparison, either:
- raising said demand pressure setting by a first predefined amount if said current tire pressure exceeds said demand pressure setting by at least a first predetermined amount;
- or,
- maintaining said demand pressure setting otherwise.
In a vehicle central tire inflation system wherein the fluid pressure in at least one inflatable tire is maintained at a preselected demand pressure setting P.sub.D, a method of adaptively controlling said inflation system to account for heat induced rises in tire pressure comprising the steps:
- measuring the pressure of said fluid in said tire to obtain a current tire pressure P.sub.C ;
- comparing said current tire pressure P.sub.C to said demand pressure setting P.sub.D ;
- then, as a result of the comparison,
- adding a first predefined amount of pressurized fluid to said tire if said current tire pressure exceeds said demand pressure setting by at least a first predetermined amount.
Dependencies are inferred from the claim text.