US 11,767,778 B1
Urea solution mixing chamber for diesel vehicle
Yoon Sung Choi, Hwaseong-Si (KR); Jae Yeol Yun, Osan-Si (KR); In Kyun Na, Hwaseong-Si (KR); and Gyu Hwa Jeong, Suwon-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 Sep. 16, 2022, as Appl. No. 17/946,835.
Claims priority of application No. 10-2022-0067149 (KR), filed on May 31, 2022.
Int. Cl. F01N 3/08 (2006.01); F01N 3/20 (2006.01)
CPC F01N 3/0814 (2013.01) [F01N 3/2066 (2013.01); F01N 2330/38 (2013.01); F01N 2610/02 (2013.01); F01N 2610/1453 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A urea solution mixing apparatus for a vehicle, the urea solution mixing apparatus comprising:
a flow guide configured to guide a flow of exhaust gas while collecting the flow of the exhaust gas toward a catalyst;
a urea solution injector disposed rearward of the flow guide and configured to distribute and inject a urea solution into the flow guide;
an impactor provided on an internal surface of the flow guide configured to collect the exhaust gas, the impactor being configured to atomize the urea solution injected from the urea solution injector; and
at least a vaporization fin configured to vaporize the atomized urea solution by bringing the atomized urea solution into contact with the at least a vaporization fin and mix the vaporized urea solution with the exhaust gas,
wherein a middle portion of an end portion of the impactor adjacent to the at least a vaporization fin is formed in concave, and a middle portion of an end portion of the at least a vaporization fin adjacent to the impactor is formed in convex.