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.

Date of Patent:
Oct. 24, 2017

Filed:

Nov. 05, 2015
Applicant:

Caterpillar Inc., Peoria, IL (US);

Inventor:

Rustin Metzger, Congerville, IL (US);

Assignee:

Caterpillar Inc., Peoria, IL (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E02F 9/22 (2006.01); G06F 7/00 (2006.01); F15B 13/02 (2006.01); F15B 21/00 (2006.01); E02F 3/84 (2006.01); E02F 3/76 (2006.01);
U.S. Cl.
CPC ...
E02F 9/2225 (2013.01); E02F 3/844 (2013.01); E02F 9/2267 (2013.01); F15B 13/02 (2013.01); F15B 21/005 (2013.01); E02F 3/7609 (2013.01);
Abstract

A system and process of controlling a hydraulic system in a work machine includes determining if an operation of the hydraulic system of the work machine meets a predetermined criteria with a controller, and operating a drain valve of the hydraulic system such that there is a minimum flow from a hydraulic pump to a drain if the operation of the hydraulic system of the work machine does not meet the predetermined criteria via the controller. The system and process further operating the drain valve of the hydraulic system such that there is a limited flow from the hydraulic pump to the drain if the operation of the hydraulic system of the work machine meets the predetermined criteria via the controller such that the predetermined criteria comprises at least a predetermined time period T since the work implement system of the work machine has been operated.


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