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:
Mar. 25, 2014
Filed:
Mar. 22, 2011
Shigekazu Hase, Nishio, JP;
Hiroya Ueno, Anjo, JP;
Nobuaki Inagaki, Nishio, JP;
Nobuhiro Iwai, Anjo, JP;
Hiroshi Tsutsui, Nishio, JP;
Shigekazu Hase, Nishio, JP;
Hiroya Ueno, Anjo, JP;
Nobuaki Inagaki, Nishio, JP;
Nobuhiro Iwai, Anjo, JP;
Hiroshi Tsutsui, Nishio, JP;
Aisin AW Co., Ltd., Anjo, JP;
Abstract
A control device for controlling a transmission device configured such that when the speed change mechanism performs switching to a shift speed with a different speed ratio, special speed change control is executed in which a disengagement hydraulic pressure, is lowered to cause a disengagement element to slip, and in which the disengagement element is maintained in a slipping state over an entire speed change process. In the case where slipping of the disengagement element is not detected within a predetermined time after the disengagement hydraulic pressure is lowered at start of the special speed change control, pressure increase correction is performed in which an engagement hydraulic pressure, which is a hydraulic pressure of hydraulic oil for an engagement element that is a friction engagement element to be engaged, is raised until slipping of the disengagement element is detected.