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:
Jan. 08, 2013
Filed:
Mar. 25, 2011
Naofumi Harada, Yokohama, JP;
Yoichi Kumemura, Yokohama, JP;
Tatsuya Gankai, Chiba, JP;
Hitachi Automotive Systems, Ltd., Ibaraki, JP;
Abstract
A suspension control apparatus selectively performs at least one of: compression-stroke control performed when a wheel load is increased, for setting a damping-force characteristic of at least one of damping-force variable dampers, which is provided on a side of at least one wheel whose wheel load is to be increased among a plurality of wheels, to a hard side in an early stage of a compression stroke and switching the damping-force characteristic to a soft side in a latter stage of the compression stroke; extension-stroke control performed when the wheel load is increased, for setting the damping-force characteristic to the soft side in an early stage of an extension stroke and switching the damping-force characteristic to the hard side in a latter stage of the extension stroke; compression-stroke control performed when the wheel load is reduced, for setting the damping-force characteristic of at least one of the damping-force variable dampers, which is provided on a side of at least one wheel whose wheel load is to be reduced, to the soft side in the early stage of the compression stroke and switching the damping-force characteristic to the hard side in the latter stage of the compression stroke; and extension-stroke control performed when the wheel load is reduced, for setting the damping-force characteristic to the hard side in the early stage of the extension stroke and switching the damping-force characteristic to the soft side in the latter stage of the extension stroke.