The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 28, 2004
Filed:
Oct. 01, 2003
Keiyu Kin, Wako, JP;
Osamu Yano, Haga-gun, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A four-wheel vehicle is equipped with rotational speed sensors S -S that detect a rotational speed V of a left front wheel T , a rotational speed V of a right front wheel T , a rotational speed V of a left rear wheel T and a rotational speed V of a right rear wheel T , respectively, and a yaw rate sensor S&ggr; that detects a yaw rate of the vehicle. An underinflation detector includes a controller that calculates a front-wheel yaw rate &ggr;F derived from a difference in rotational speed between the front wheels T , T , a rear-wheel yaw rate &ggr;R derived from a difference in rotational speed between the rear wheels T , T , and deviations of the yaw rates &ggr;F, &ggr;R from an actually measured value output from the yaw rate sensor S&ggr;. A rate of change of the deviation with respect to change of vehicle speed is determined to thereby detect insufficiency of inflation pressure of tires with high reliability. Utilizing this underinflation detector , the outputs of the yaw rate sensor S&ggr; can be corrected.