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. 05, 2020
Filed:
Dec. 04, 2017
Caterpillar Inc., Peoria, IL (US);
Shivsinh Hitendrasinh Parmar, Dunlap, IL (US);
Purna Chander Nalla, Peoria, IL (US);
Johnathan Wingate Trundt, Peoria, IL (US);
Jun Cai, Dunlap, IL (US);
Brian Vincent Tranel, Dunlap, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A control system is provided to a reductant dosing system for actively maintaining the reductant dosing system ready for use by flushing unused reductant that has crystallized at a return valve of the reductant dosing system. The control system includes a controller that can control a manner of operation of specific system hardware that is present in the reductant dosing system to flush the unused reductant from the return valve that could otherwise cause the return valve to remain a flow-blocking condition as a result of the crystallized reductant.