# US 2025/0146434 A1 · Exhaust component

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- Number: US 2025/0146434 A1
- Document ID: US20250146434A1
- Status: Published application
- Kind: A1
- Application number: 18/930,058
- Filed: 2024-10-29
- Published: 2025-05-08
- Earliest claimed: 2023-11-07
- Assignees: Futaba Industrial Co., Ltd.
- Applicants: Futaba Industrial Co., Ltd.
- Inventors: Ryuji Sakaida
- Web page: https://patentgrep.com/patent/US20250146434A1

## CPC

- F01N 13/008: {Mounting or arrangement of exhaust sensors in or on exhaust apparatus (sensor arrangements for engine control F02D41/1439)}
- F01N 13/08: Other arrangements or adaptations of exhaust conduits {(pipes, joints or supports therefor in general F16L; collecting or removing exhaust gases of vehicle engines in workshops B08B15/00, on highways E01C1/005)}
- F02M 26/14: in relation to the exhaust system
- F01N 3/035: with catalytic reactors
- F01N 3/10: by thermal or catalytic conversion of noxious components of exhaust
- F01N 11/002: {the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus}
- F01N 2250/02: filtering and catalytic conversion
- F01N 2450/22: by welding or brazing
- F01N 2470/20: Dimensional characteristics of tubes, e.g. length, diameter
- F01N 2560/08: the means being a pressure sensor
- Y02T 10/12: Improving ICE efficiencies
- F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16)
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

An exhaust component includes a first member and a second member. The first member forms a first flow path for exhaust gas. The second member forms a second flow path that has a smaller cross-sectional area than the first flow path. The first member includes a hole-forming portion forming a through hole. The hole-forming portion includes an edge portion, the edge portion protruding toward an outside of the first member in a manner curved from a periphery of the through hole, the edge portion surrounding the through hole. The second member includes an upstream end portion located on an upstream side of the second flow path, the upstream end portion being joined to the hole-forming portion to cover an outer-peripheral surface of the hole-forming portion. The second flow path is for the exhaust gas that has passed through the through hole and flowed in from the upstream end portion.

## Claims

### Claim 1

An exhaust component comprising:
a first member forming a first flow path for exhaust gas; and
a second member forming a second flow path, the second flow path having a smaller cross-sectional area than the first flow path,
the first member including a hole-forming portion forming a through hole,
the hole-forming portion including an edge portion, the edge portion protruding toward an outside of the first member in a manner curved from a periphery of the through hole, the edge portion surrounding the through hole,
the second member including an upstream end portion located on an upstream side of the second flow path, the upstream end portion being joined to the hole-forming portion so as to cover an outer-peripheral surface of the hole-forming portion, and
the second flow path being a flow path for the exhaust gas that has passed through the through hole and flowed in from the upstream end portion.

### Claim 2 (depends on 1)

The exhaust component according to claim 1,
wherein an end face of the upstream end portion is formed such that an angle formed with the outer-peripheral surface of the hole-forming portion is an obtuse angle.

### Claim 3 (depends on 1)

The exhaust component according to claim 1,
wherein an inner-peripheral surface of the upstream end portion is formed so as to expand radially outward from a downstream side toward the upstream side of the second flow path.

### Claim 4 (depends on 1)

The exhaust component according to claim 1,
wherein the hole-forming portion is curved toward the outside of the first member at an angle greater than 0 degrees and less than or equal to 90 degrees.

### Claim 5 (depends on 1)

The exhaust component according to claim 1,
wherein the first member is formed as a case including a catalyst therein, and
wherein the second member is formed as a pipe to be connected to a sensor or an exhaust gas recirculation (EGR) pipe.