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:
Oct. 29, 1996
Filed:
Jul. 27, 1995
Thomas Desautels, West Bloomfield, MI (US);
Charles E Allen, Jr, Rochester Hills, MI (US);
Frank A Palmeri, Troy, MI (US);
Jon M Huber, Laurinburg, NC (US);
Rockwell International Corporation, Pittsburgh, PA (US);
Abstract
An improved system for synchronizing the output speed of an engine with that necessary at the next expected gear to achieve a desired speed ratio updates and monitors the currently engaged gear. In this way, the system improves upon prior systems that attempted to 'count' to determine the currently engaged gear. Moreover, the system provides an operator with a shift intent switch that allows the operator to predict an upshift or a downshift as the next shift. The system calculates what the next expected gear will be based upon this indication. Once the next expected gear is known, the speed ratio at that gear is determined. Once the transmission is moved to neutral, the synchronization speed for the engine is then determined by multiplying the current transmission output speed with that next speed ratio. The engine control drives the engine speed to achieve synchronization speed ratio. The determination is updated as the transmission speed changes. The operator completes the shift with a manual stick shift.