About 52 results
https://drivepatents.com/patents/1073506 · 5 Oct 2005
A tire deflation detection system for determining loss of air pressure in a tire through comparing a determination value, which determines the loss of air pressure in the tire based on information of wheel speed of a vehicle, with a threshold value, wherei...
https://drivepatents.com/patents/1074925 · 17 Aug 2005
A method for warning deflation of tires which can detect the deflation of 2 wheels at the same axle including a following axle, the simultaneous deflation of 4 wheels or the abrasion of tires only by the information of wheel speeds is provided. The method ...
https://drivepatents.com/patents/1075579 · 27 Jul 2005
A detection method of reducing the air pressure of tires based on the rotational speed of wheels mounted on a vehicle. The method includes steps of: detecting the rotational speed of each of the wheels; storing the rotational speed of wheels; determining a...
https://drivepatents.com/patents/1078102 · 4 May 2005
A detection method of reducing the air pressure of tires based on the rotational speed of wheels mounted on a vehicle. The method includes steps of: determining the rotational speed of said each wheel, memorizing the rotational speed of said wheel, determi...
https://drivepatents.com/patents/1079587 · 2 Mar 2005
A road surface condition judging apparatus (40) of a vehicle includes means (2,3,4,5) for detecting wheel speeds of respective wheels, means (8) for calculating a vehicle speed (Vb) of the vehicle based on the wheel speeds, means (9) for calculating a dece...
https://drivepatents.com/patents/1081605 · 15 Dec 2004
A method for detecting decrease in tire air-pressure on the basis of wheel rotational information obtained from tires attached to a four-wheeled vehicle. The method includes the steps of: obtaining wheel rotational information obtainable from the respectiv...
https://drivepatents.com/patents/1082357 · 17 Nov 2004
An apparatus for calculating an initial correction coefficient for correcting rotational angular velocities obtained from outputs of rotational angular velocity detecting means. The apparatus includes a judged value calculating means which calculates a jud...
https://drivepatents.com/patents/1082514 · 10 Nov 2004
The present invention relates to a method for determining a change of a tire inflation pressure, comprising the steps of determining a first traveled distance d1 of the tire of the vehicle by using a first calculation method, determining a second traveled ...
https://drivepatents.com/patents/1084179 · 8 Sep 2004
A method for alarming decrease in tire air-pressure in which decrease in tire air-pressure is determined on the basis of rotational velocity information of a wheel of a vehicle. Respective thresholds for determining whether judgment of decrease in tire air...
https://drivepatents.com/patents/1085806 · 7 Jul 2004
The method involves observing information representing radius of curvature of a trajectory followed by a wheel at a time of turn. Number of revolutions of each wheel is determined, when the wheel is rotated to a predetermined distance. The difference betwe...