	US 11,905,868 B2
	Reduce cold start internal combustion engine gaseous pollutants emissions using adsorbents in a cartridge in a bypass exhaust line
Emmanuel Laigle, Courbevoie (FR); Christophe Chaillou, Rueil-Malmaison (FR); Caroline Norsic, Rueil-Malmaison (FR); and André Nicolle, Nanterre (FR)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Dec. 17, 2021, as Appl. No. 17/644,884.
Prior Publication US 2023/0193797 A1, Jun. 22, 2023
Int. Cl. F01N 3/20 (2006.01); F01N 3/08 (2006.01); B01D 53/94 (2006.01); F01N 3/28 (2006.01)

CPC F01N 3/0878 (2013.01) [B01D 53/94 (2013.01); F01N 3/2026 (2013.01); F01N 3/2803 (2013.01); F01N 2410/12 (2013.01); F01N 2450/30 (2013.01)]

14 Claims

1. A system, comprising:

an exhaust gas source that provides exhaust gas pollutants;

a primary catalytic converter coupled downstream of the exhaust gas source;

a particulate filter coupled downstream of the primary catalytic converter;

a first adsorption unit, configured to adsorb exhaust gas pollutants, coupled downstream of the particulate filter, and

a second adsorption unit, configured to adsorb exhaust gas pollutants, coupled downstream of the first adsorption unit,

wherein the first and second adsorption units include one or more heating elements, and

wherein the exhaust gas pollutants are selected from the group consisting of CO, SO_x, NH₃, aldehydes, ketones, and combinations thereof.