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:
Dec. 29, 2015
Filed:
Nov. 20, 2013
Tenneco Automotive Operating Company Inc., Lake Forest, IL (US);
Gary Butzke, Brighton, MI (US);
Tenneco Automotive Operating Company Inc., Lake Forest, IL (US);
Abstract
An exhaust aftertreatment system may include a tank, an injector, a supply conduit, a pump, a pressure sensor, and a control module. The tank may contain a volume of a fluid. The injector may be configured to inject the fluid into a stream of exhaust gas discharged from the combustion engine. The supply conduit may fluidly connect the tank and the injector. The pump may pump the fluid from the tank to the injector. The control module may be in communication with the pressure sensor and the pump and may control the pump based on first and second measurements from the pressure sensor. The first measurement may be indicative of a first pressure within the supply conduit when the pump is operating. The second measurement from the pressure sensor may be indicative of a second pressure within the supply conduit when the pump is not operating.