US 12,253,017 B2
Exhaust gas control apparatus for internal combustion engine
Hirokazu Ito, Shizuoka-ken (JP); Kazuhiko Seguchi, Shizuoka-ken (JP); Hiroshi Oyagi, Kyoto (JP); and Akira Hojo, Susono (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Sep. 22, 2023, as Appl. No. 18/472,613.
Claims priority of application No. 2022-192782 (JP), filed on Dec. 1, 2022.
Prior Publication US 2024/0183301 A1, Jun. 6, 2024
Int. Cl. F01N 3/22 (2006.01); F01N 3/20 (2006.01); F01N 13/06 (2010.01); F01N 13/10 (2010.01)
CPC F01N 3/225 (2013.01) [F01N 3/2066 (2013.01); F01N 13/06 (2013.01); F01N 13/10 (2013.01); F01N 13/105 (2013.01); F01N 13/107 (2013.01); F01N 2240/20 (2013.01); F01N 2260/14 (2013.01); F01N 2260/16 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An exhaust gas control apparatus comprising:
a catalytic converter;
a merging portion that connects the catalytic converter to an internal combustion engine; and
a diffusion protrusion provided in the merging portion, wherein
the internal combustion engine includes a plurality of cylinders and a plurality of exhaust passages respectively communicating with the cylinders,
the merging portion has a cylindrical shape and is connected to a downstream side of each of the exhaust passages,
the catalytic converter is connected to a downstream side of the merging portion, and
the diffusion protrusion is configured to promote a jet flow of a main flow of exhaust gas flowing into the merging portion.
 
4. An exhaust gas control apparatus comprising:
a catalytic converter; and
a merging portion that connects the catalytic converter and an internal combustion engine and that is provided with a dispersion surface on an inner wall of the merging portion, wherein
the internal combustion engine including a plurality of cylinders and a plurality of exhaust passages respectively communicating with the cylinders,
the merging portion has a cylindrical shape and is connected to a downstream side portion of each of the exhaust passages,
the catalytic converter is connected to a downstream side of the merging portion, and
the dispersion surface faces an outflow opening of exhaust gas in the downstream side portion and that three-dimensionally disperses a main flow of exhaust gas linearly flowed into the merging portion from the outflow opening.