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:
Feb. 23, 1999
Filed:
Aug. 22, 1997
Applicant:
Inventors:
Anthony Stasik, Coppull, GB;
Michael Douglas Whitehead, Cheadle Hulme, GB;
Assignee:
Eaton Corporation, Cleveland, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
74335 ; 7433 / ; 477124 ;
Abstract
A method and system for controlling downshifting of an automated mechanical transmission system which senses unsuccessful attempts to engage a predetermined downshift target gear ratio (GR.sub.T) due to engine speed remaining less than the synchronous engine speed (ES=OS*GR.sub.T) for engaging said target gear ratio and, in response to sensing such conditions, automatically initiates a degraded mode of operation wherein an achievable degraded mode target gear ratio (GR.sub.DMT <ES.sub.MAX .div.OS), synchronizable at achieved maximum engine speed (ES.sub.MAX), is identified and caused to be engaged.