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:
Aug. 14, 2007
Filed:
Jun. 18, 2003
Robert S. Wheeler, Redditch, GB;
Anthony Stasik, Portage, MI (US);
Jeffrey P. Hawarden, Lancashire, GB;
Kwok W. Chan, Manchester, GB;
Robert S. Wheeler, Redditch, GB;
Anthony Stasik, Portage, MI (US);
Jeffrey P. Hawarden, Lancashire, GB;
Kwok W. Chan, Manchester, GB;
Eaton Corporation, Cleveland, OH (US);
Abstract
A method and system for controlling downshifting in an automated mechanical transmission system () utilized on a vehicle. When an automatic power downshift from a currently engaged ratio (GR) is required, the engine acceleration (EA) is monitored and compared with an engine free acceleration (EFA) to detect a false Neutral condition and to take appropriate action accordingly. Alternatively, a false Neutral condition is detected when the Absolute Value of the rotational speed of the output shaft (OS) times the currently engaged gear ratio (GR) minus the rotational speed of the input shaft (IS) is less than a predetermined value (ABS((OS*GR)−IS)).