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:
Apr. 22, 2014
Filed:
Mar. 02, 2011
Hiroshi Toyoda, Nishio, JP;
Takeshige Miyazaki, Chiryu, JP;
Hiroshi Toyoda, Nishio, JP;
Takeshige Miyazaki, Chiryu, JP;
Aisin AI Co., Ltd., Nishio-Shi, JP;
Abstract
A sleeve stroke SSt of a specific sleeve is gradually increased from '0' (after t) in a state in which a vehicle is stopped, a transmission is in a neutral state (all sleeve strokes SSt=0 (original position)), a clutch is in a disengaged state (clutch stroke CSt=0 (original position)), and an engine is operating (engine rotational speed NE>0). Upon determination that the sleeve stroke SSt has reached a predetermined value A, at which synchronization operation of a corresponding synchronization mechanism is performed, the sleeve stroke SSt is fixed to the predetermined value A, and an operation of increasing the clutch stroke CSt from '0' in a press engagement direction is started (time t). An engagement start point CStlearn of the clutch is obtained based on a change in the rotational speed Ni of an input shaft Ai of the transmission after that (time t).