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:
May. 27, 2014
Filed:
May. 31, 2011
Michael Evan Hague, Yorkville, IL (US);
Sameer Marathe, Yorkville, IL (US);
Zhiyong Wei, Naperville, IL (US);
Matthew Stephen Marquette, Peoria, IL (US);
Michael Evan Hague, Yorkville, IL (US);
Sameer Marathe, Yorkville, IL (US);
Zhiyong Wei, Naperville, IL (US);
Matthew Stephen Marquette, Peoria, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A machine having a pump overspeed protection system operating thereon includes an internal combustion engine, a plurality of ground engaging elements, and a drivetrain coupling the internal combustion engine and the ground engaging elements. The drivetrain includes a torque converter having a locked configuration and an unlocked configuration. The machine also includes a plurality of pumps driven by the internal combustion engine. An electronic control is in communication with the internal combustion engine, the torque converter, and the plurality of pumps. The electronic controller is configured to determine a pump speed of a first pump of the plurality of pumps, initiate a first action of a hierarchy of pump overspeed protection actions if the pump speed exceeds a first speed threshold, initiate a second action of the hierarchy of pump overspeed protection actions if the pump speed exceeds a second speed threshold, initiate a third action of the hierarchy of pump overspeed protection actions if the pump speed exceeds a third speed threshold, and monitor a condition of a component altered by at least one of the hierarchy of pump overspeed protection actions. At least one of the hierarchy of pump overspeed protection actions includes increasing a displacement of at least one of the plurality of pumps and at least another of the hierarchy of pump overspeed protection actions includes moving the torque converter from the locked configuration to the unlocked configuration.