Patent · US Active

Diesel-exhaust-fluid refill detection

US8509983B2 · kind B2 · utility

1Cited by

3References

12Claims

0Family size

Assignee

GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

Matthew King · Gig Harbor, US
Rebecca J. Darr · Milford, US

Key dates

Filing date	Nov 12, 2010
Grant date	Aug 13, 2013
Priority date	—
Expiry date	Oct 23, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method is provided for detecting a level of diesel-exhaust-fluid (DEF) in a reservoir that is operatively connected to a catalyst for a diesel engine. The method is employed in a vehicle in order to facilitate a refill of the reservoir. The method includes sensing a level of diesel fuel in a fuel tank via a sensor operatively connected to the tank. The method also includes determining whether the vehicle is on an incline using the sensed level of diesel fuel in the fuel tank. The method additionally includes determining the level of DEF in the reservoir if the vehicle is determined to be substantially not on an incline. A system is also provided for detecting a level of DEF in the reservoir.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.