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:
Jun. 27, 2017
Filed:
Mar. 14, 2014
Cummins Ip, Inc., Columbus, IN (US);
Shu Zhang, Columbus, IN (US);
Srivardhan Chandrapati, Columbus, IN (US);
Mugdha Naik, Columbus, IN (US);
Srinivasa V. Rajagopalan, Ann Arbor, MI (US);
Wei Huang, Columbus, IN (US);
George Muntean, Columbus, IN (US);
Andrew Myer, Greenwood, IN (US);
Cummins IP, Inc., Columbus, IN (US);
Abstract
According to one embodiment, a diesel exhaust fluid purging system includes a metering valve with a supply port and a delivery port. The purging system also includes a pump assembly that is fluidly connected to the supply port of the metering valve. The pump assembly includes a pump and a single supply line that is fluidly connectable with a diesel exhaust fluid source. The purging system further includes an injection assembly that is fluidly connected to the delivery port of the metering valve. The injection assembly includes an air supply line that is fluidly connectable with an air supply source. Additionally, the purging system includes a controller in electrical communication with the metering valve, the pump assembly, and the injection assembly. The controller is configured to purge the pump assembly of residual diesel exhaust fluid using air from the air supply line.