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:
Nov. 30, 2021
Filed:
Apr. 13, 2021
Tongji University, Shanghai, CN;
Diming Lou, Shanghai, CN;
Yunhua Zhang, Shanghai, CN;
Piqiang Tan, Shanghai, CN;
Zhiyuan Hu, Shanghai, CN;
Liang Fang, Shanghai, CN;
TONGJI UNIVERSITY, Shanghai, CN;
Abstract
A method for controlling an exhaust after-treatment system based on NOmedium adjustment includes the following steps: creating a diesel oxidation catalyst (DOC) reaction map, a diesel particulate filter (DPF) reaction map, and a selective catalytic reduction (SCR) reaction map; obtaining an SCR reaction temperature, desired SCR reaction efficiency, and obtaining NOdemand according to the SCR reaction map; obtaining a DPF reaction temperature and differential pressure, and obtaining NOconsumption from the DPF reaction map; obtaining NOproduction, and calculating NOinput for SCR; if the NOinput is not equal to the NOdemand, calculating target NOproduction, obtaining a target DOC reaction temperature corresponding to the target NOproduction from the DOC reaction map, and adjusting a fuel injection rate so that the DOC reaction temperature is equal to the target DOC reaction temperature.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile