US 12,253,014 B1
Reduced internal combustion engine particulate matter emissions
Emmanuel Laigle, Courbevoie (FR); Christophe Chaillou, Rueil-Malmaison (FR); and Caroline Norsic, Rueil-Malmaison (FR)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Oct. 19, 2023, as Appl. No. 18/489,944.
Int. Cl. F01N 3/032 (2006.01); F01N 3/031 (2006.01); F01N 3/035 (2006.01); F01N 3/10 (2006.01); F01N 13/00 (2010.01)
CPC F01N 3/035 (2013.01) [F01N 3/031 (2013.01); F01N 3/103 (2013.01); F01N 13/0093 (2014.06); F01N 13/011 (2014.06); F01N 2250/02 (2013.01); F01N 2560/06 (2013.01); F01N 2560/08 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A system for reducing internal combustion engine emissions, comprising:
a main exhaust line fluidly connected to an internal combustion engine;
a multi-particulate filter assembly connected between the exhaust line and a tailpipe, the multi-particulate filter assembly comprising:
a first particulate filter positioned along a first filter line;
a second particulate filter positioned along a second filter line;
a first ozone injector positioned upstream of the first particulate filter along the first filter line;
a second ozone injector positioned upstream of the second particulate filter along the second filter line; and
an oxidation catalyst;
wherein the first particulate filter and the second particulate filter are configured in a series arrangement, and
a valve connected between the exhaust line and the multi-particulate filter assembly, wherein when the valve is in a first position, the exhaust line is in fluid communication with the first filter line, and wherein when the valve is in a second position, flow between the exhaust line and the first filter line is bypassed.