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:
Sep. 10, 2024
Filed:
Jan. 03, 2024
Systems and methods for operating passive nitrogen oxide adsorbers in exhaust aftertreatment systems
Cummins Inc., Columbus, IN (US);
Jinyong Luo, Columbus, IN (US);
Xiaobo Song, Columbus, IN (US);
Xing Jin, Columbus, IN (US);
David Schmidt, Indianapolis, IN (US);
Lu Qiu, Columbus, IN (US);
Lisa A. Orth-Farrell, Columbus, IN (US);
Ying Yuan, Columbus, IN (US);
Manik Narula, Columbus, IN (US);
Lars K. Henrichsen, Columbus, IN (US);
Cummins Inc., Columbus, IN (US);
Abstract
A system includes a catalyst for receiving and treating exhaust gas generated by an engine, a passive NOx adsorber (PNA) positioned upstream of the catalyst, a bypass valve positioned upstream of the catalyst and the PNA, and a controller. The controller is configured to: while controlling the bypass valve to direct exhaust gas to the PNA, detect a torque demand that is greater than a threshold value; responsive to detecting that the torque demand is greater than the threshold value, engage a motor, coupled with a battery system, with a drive shaft of the system to meet at least a portion of the torque demand; in response to the engagement of the motor with the drive shaft not meeting all of the torque demand, engage the engine with the drive shaft to meet a remainder of the torque demand.