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:
May. 31, 2011
Filed:
Jun. 24, 2008
Hyun Ku Lee, Seoul, KR;
Yoshio Koike, Anjo, JP;
Ryogo Kato, Anjo, JP;
Yoshizou Akita, Anjo, JP;
Kiyotaka Wakamatsu, Anjo, JP;
Hyun Ku Lee, Seoul, KR;
Yoshio Koike, Anjo, JP;
Ryogo Kato, Anjo, JP;
Yoshizou Akita, Anjo, JP;
Kiyotaka Wakamatsu, Anjo, JP;
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Aisin Aw Co., Ltd., Anjo-shi, JP;
Abstract
A hydraulic control system includes a key detector that detects whether an ignition key is in an on state, a control portion that outputs different control signals according to whether the engine is on if the key is on, and a valve, such as a solenoid valve, that controls gear shifts according to the control signals from the control portion. A hydraulic control method includes determining whether an ignition key is on; determining whether an engine is on or off if the key is on; and controlling a valve, such as a solenoid valve, that controls gear shifts, differently depending on whether the engine is on or off, such as by applying different duty values to the valve. A low duty value may be applied to the valve when the engine is off, and a higher duty value may be applied to the valve when the engine is on.