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:
Oct. 06, 2020
Filed:
Nov. 15, 2018
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Yoon Sung Choi, Hwaseong-si, KR;
HYUNDAI MOTOR COMPANY, Seoul, KR;
KIA MOTORS CORPORATION, Seoul, KR;
Abstract
A urea injection control method in an exhaust after-treatment system includes: performing an ammonia slip prevention logic that adjusts a urea injection amount based on the highest temperature during a predetermined period of time from an end point of filter regeneration to a thermal equilibrium point when a temperature of a selective catalytic reduction (SCR) catalyst is higher than or equal to a predetermined threshold temperature at the end point of the filter regeneration; and adjusting a urea injection amount based on an ammonia storage amount map when the temperature of the SCR catalyst is lower than or equal to the predetermined threshold temperature at the end point of the filter regeneration. In particular, the thermal equilibrium point is a point at which a temperature of a filter is close or equal to an exhaust gas temperature.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile