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:
Feb. 24, 1998
Filed:
Dec. 06, 1995
Applicant:
Inventors:
Steven V Christensen, Peoria, IL (US);
Andrew O Fonkalsrud, Yorkville, IL (US);
Assignee:
Caterpillar Inc., Peoria, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60K / ;
U.S. Cl.
CPC ...
180 534 ; 364424083 ; 477110 ;
Abstract
An apparatus and method for controlling the torque on the power train of a machine is disclosed. The power train includes an engine and a torque converter. The machine includes a work implement that is moveable in response to the actuation of a plurality of hydraulic cylinders. An electronic controller determines an optimal engine speed based on the actual engine speed, torque converter output speed, and the fluid pressure associated with the hydraulic cylinders. The optimal engine speed is used to govern the speed of the engine to control the power train torque.