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:
Jul. 17, 2007
Filed:
Dec. 16, 2003
Michael D. Anderson, East Peoria, IL (US);
Michael D. Betz, Knoxville, IL (US);
Douglas A. Carlson, Morton, IL (US);
Stephen C. Garnett, Princeville, IL (US);
Michael D. Anderson, East Peoria, IL (US);
Michael D. Betz, Knoxville, IL (US);
Douglas A. Carlson, Morton, IL (US);
Stephen C. Garnett, Princeville, IL (US);
Caterpillar Inc, Peoria, IL (US);
Abstract
A method of maintaining a constant ground speed of a work machine having an engine, powertrain, and at least one electronic control module (ECM) is disclosed. The method included sensing a parameter indicative of the ground speed of the work machine and responsively producing a signal indicative of the actual ground speed, providing a predetermined maximum ground speed of the work machine, receiving the signal indicative of the actual ground speed and the predetermined maximum ground speed of the work machine by the ECM, applying an algorithm to determine the desirable RPM of the engine of the work machine, and modulating the engine RPMs to the desirable engine RPMs to maintain a constant ground speed of the work machine.