US 12,276,221 B2
Catalytic converter of vehicle
Sangmin Lee, Suwon-Si (KR); Inkyun Na, Hwaseong-Si (KR); Gyuhwa Jeong, Suwon-Si (KR); and Dongjun Lee, Ansan-Si (KR)
Assigned to Hyundai Motor Company, Seoul (KR); Kia Corporation, Seoul (KR); and Faurecia, Korea, Ltd., Yongin-si (KR)
Filed by Hyundai Motor Company, Seoul (KR); Kia Corporation, Seoul (KR); and Faurecia, Korea, Ltd., Yongin-si (KR)
Filed on Oct. 31, 2022, as Appl. No. 17/977,479.
Claims priority of application No. 10-2022-0092986 (KR), filed on Jul. 27, 2022.
Prior Publication US 2024/0035406 A1, Feb. 1, 2024
Int. Cl. F01N 3/20 (2006.01); B01D 53/94 (2006.01); F01N 3/035 (2006.01); F01N 3/08 (2006.01); F01N 3/10 (2006.01); F01N 3/28 (2006.01); F01N 13/00 (2010.01); F01N 13/18 (2010.01)
CPC F01N 3/2066 (2013.01) [B01D 53/9418 (2013.01); B01D 53/9422 (2013.01); B01D 53/9431 (2013.01); B01D 53/9477 (2013.01); F01N 3/035 (2013.01); F01N 3/105 (2013.01); F01N 3/2892 (2013.01); F01N 13/009 (2014.06); F01N 13/1805 (2013.01); B01D 2255/904 (2013.01); B01D 2255/915 (2013.01); F01N 3/0807 (2013.01); F01N 3/0814 (2013.01); F01N 3/0821 (2013.01); F01N 3/206 (2013.01); F01N 2330/38 (2013.01); F01N 2610/02 (2013.01); F01N 2610/146 (2013.01); F01N 2900/1812 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A catalytic converter apparatus of a vehicle, the catalytic converter apparatus comprising:
a lean NOx trap (LNT) converter including an LNT catalyst to reduce nitrogen oxides contained in exhaust gas of the vehicle;
an SDPF converter including an SDPF catalyst to capture particulate matters contained in the exhaust gas and reduce the nitrogen oxides contained in the exhaust gas using a reducing agent;
a connection housing connecting the LNT converter and the SDPF converter to each other;
an injection module provided in the connection housing to inject the reducing agent from the LNT converter toward the SDPF converter;
an impactor provided inside the connection housing to atomize and vaporize the reducing agent injected from the injection module;
a first guide mixer provided inside the connection housing to form a swirl-direction flow of the exhaust gas mixed with the reducing agent atomized through the impactor; and
a second guide mixer provided downstream of the first guide mixer inside the connection housing to form an additional swirl-direction flow of the exhaust gas mixed with the reducing agent,
wherein the injection module is mounted on the connection housing to inject the reducing agent in three directions toward the SDPF converter from the LNT converter,
wherein the impactor includes:
a first impactor disposed downstream of the first guide mixer to atomize and vaporize the reducing agent injected in two directions from the injection module among the three directions; and
a second impactor disposed downstream of the first impactor to atomize and vaporize the reducing agent injected in one direction from the injection module among the three directions, and
wherein the first impactor includes:
a first fixing portion fixed to a lower surface of the connection housing above the LNT converter;
a first left wall formed from the first fixing portion so that the reducing agent injected in one direction from the injection module collides therewith; and
a first right wall formed from the first fixing portion so that the reducing agent injected in another direction from the injection module collides therewith.