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:
Jul. 27, 2004
Filed:
Jul. 22, 2002
Hirokatsu Amanuma, Saitama-ken, JP;
Yasuhiko Sugo, Saitama-ken, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
There is provided a control system for a front-and-rear wheel drive vehicle which connects and disconnects one pair of respective pairs of front wheels and rear wheels to and from an electric motor for driving the one pair of wheels by a clutch of a type actuated by pressure. The control system is capable of engaging the clutch promptly and reliably, thereby enabling excellent startability of the vehicle and a sufficient total driving force for the vehicle. In the control system, the front wheels are driven by an engine, the rear wheels are driven by the electric motor via the clutch, and the clutch is actuated by accumulator pressure, whereby the rear wheels and the electric motor are connected to and disconnected from each other. The control system increases the accumulator pressure by driving an electric oil pump when the accumulator pressure is equal to or lower than an operating pressure.