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. 03, 2026
Filed:
Sep. 23, 2025
Hd Construction Equipment Co., Ltd., Seongnam-si, KR;
Jin Hwan Yu, Incheon, KR;
HD CONSTRUCTION EQUIPMENT CO., LTD., Seongnam-si, KR;
Abstract
According to an embodiment of the disclosure, there is provided a dual selective catalytic reduction (SCR) system including: a first SCR device provided downstream of an engine; a diesel particulate filter provided downstream of the first SCR device; a second SCR device provided downstream of the diesel particulate filter; and a controller including a first SCR efficiency determination unit to determine a first reduction efficiency of the first SCR device, wherein the first SCR efficiency determination unit calculates a first-1 reduction efficiency for maximizing passive regeneration of the diesel particulate filter, calculates a first-2 reduction efficiency for minimizing nitrogen oxides, and calculates a first-3 reduction efficiency which is a value between the first-1 reduction efficiency and the first-2 reduction efficiency according to coolant temperatures of the engine.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile