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:
Jan. 31, 1995
Filed:
Aug. 11, 1993
Applicant:
Inventors:
Kwok W Chan, Chorley, GB;
Michael Dobson, Leyland, GB;
Assignee:
Eaton Corporation, Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
477 75 ; 477 78 ;
Abstract
A control system and method for a vehicular semi-automatic mechanical transmission system (10) is provided for allowing controller or operator request for a direct downshift into a preselected start ratio, under certain predefined conditions. The direct downshift into the preselected start gear ratio is sequenced such that the target synchronous engine speed (OS*GR) at target gear ratio engagement is substantially equal to a preselected desirable, preferably constant, value for all selectable start ratios.