Patent · US Active

Method and system for reductant injector degradation

US9217350B2 · kind B2 · utility

2Cited by

16References

20Claims

0Family size

Assignee

Ford Global Technologies, LLC · US

Inventors

Devesh Upadhyay · Canton, US
In Kwang Yoo · Ann Arbor, US
David John Kubinski · Canton, US
Jacobus Hendrik Visser · Farmington Hills, US
Garth Michael Meyer · Dearborn, US
Michiel J. Van Nieuwstadt · Ann Arbor, US

Key dates

Filing date	Nov 13, 2013
Grant date	Dec 22, 2015
Priority date	—
Expiry date	Nov 13, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

Various systems and methods for detecting exhaust reductant injector degradation based on an exhaust NOx sensor are disclosed. In one example, degradation of the reductant injector is indicated when an actual NOx sensor output differs from an expected NOx sensor output by more than a threshold amount under engine off conditions.

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