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:
Apr. 27, 2021
Filed:
Mar. 14, 2019
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/08 (2006.01); F02D 41/02 (2006.01); F01N 3/20 (2006.01); F02D 41/12 (2006.01); F02D 41/04 (2006.01);
U.S. Cl.
CPC ...
F01N 3/0842 (2013.01); F02D 41/0275 (2013.01); F01N 3/2066 (2013.01); F01N 2900/1602 (2013.01); F02D 41/042 (2013.01); F02D 41/123 (2013.01); F02D 2041/026 (2013.01); F02D 2200/0802 (2013.01); F02D 2200/0806 (2013.01);
Abstract
Methods and systems are provided for partially regenerating a lean NOtrap in response to an engine shutdown request. In one example, an engine shutdown is delayed so that a low-temperature storing region of the lean NOtrap is regenerated without regenerating a high-temperature storing region of the lean NOtrap. A battery charge is replenished during the shutdown, wherein the charge may be consumed during a subsequent engine operation.