# US 2023/0053401 A1 · Intake noise reduction structure for vehicle

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- Number: US 2023/0053401 A1
- Document ID: US20230053401A1
- Status: Published application
- Kind: A1
- Application number: 17/794,815
- Filed: 2021-01-21
- Published: 2023-02-23
- Earliest claimed: 2020-01-24
- Assignees: Isuzu Motors Limited
- Applicants: Isuzu Motors Limited
- Inventors: Naohiro KAIWA; Jun OKURA
- Web page: https://patentgrep.com/patent/US20230053401A1

## CPC

- F02M 35/1283: {Manufacturing or assembly; Connectors; Fixations}
- B60K 13/02: concerning intake
- B62D 24/00: Connections between vehicle body and vehicle frame (B62D23/00, B62D33/077 take precedence)
- B62D 33/067: tiltable
- F02M 35/1255: {using resonance}
- F02M 35/16: characterised by use in vehicles
- F02M 35/164: {Heavy duty vehicles, e.g. trucks, trains, agricultural or construction machines}
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B62D: MOTOR VEHICLES; TRAILERS (steering, or guiding on a desired track, of agricultural machines or implements A01B69/00; wheels, castors, axles, increasing wheel adhesion B60B; vehicle tyres, tyre inflation or tyre changing B60C; connections between vehicles of a train or the like B60D; vehicles for use on rail and road, amphibious or convertible vehicles B60F; suspension arrangements B60G; heating, cooling, ventilating or other air treating devices B60H; windows, windscreens, non-fixed roofs, doors or similar devices, protective coverings for vehicles not in use B60J; propulsion plant arrangements, auxiliary drives, transmissions, controls, instrumentation or dashboards B60K; electric equipment or propulsion of electrically-propelled vehicles B60L; power supply for electrically-propelled vehicles B60M; passenger accommodation not otherwise provided for B60N; adaptations for load transportation or to carry special loads or objects B60P; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q; vehicles, vehicle fittings or vehicle parts not otherwise provided for B60R; servicing, cleaning, repairing, supporting, lifting, or manoeuvring, not otherwise provided for, B60S; brake arrangements, brake control systems or parts thereof B60T; air-cushion vehicles B60V; motor-cycles, accessories therefor B62J, B62K; testing of vehicles G01M)

## Abstract

A bracket 10 has a U-shaped cross section in which a pair of facing plate portions 15 extend from both side edges of a bottom plate portion 12 so as to face each other, and is fixed to a vehicle body side for mounting a predetermined component. The bottom plate portion 12 and the pair of facing plate portions 15 partition a bracket inner space 16, and the bottom plate portion 12 is provided with a through hole 20 which makes the bracket inner space 16 communicate with an outside. A resonator 23 is fixed to the bracket 10 in a state where the resonator 23 is accommodated in the bracket inner space 16. A ventilation passage 29 makes the resonator 23 communicate with the intake duct 21 through the through hole 20.

## Claims

### Claim 1

An intake noise reduction structure for a vehicle to reduce intake noise of an intake duct which takes air into an engine, the structure comprising:
a bracket having a U-shaped cross section in which a pair of facing plate portions extend from both side edges of a bottom plate portion so as to face each other, wherein the bottom plate portion and the pair of facing plate portions partition a bracket inner space, and the bottom plate portion is provided with a through hole which makes the bracket inner space communicate with an outside, the bracket being fixed to a vehicle body side for mounting a predetermined component;
a resonator fixed to the bracket in a state where the resonator is accommodated in the bracket inner space; and
a ventilation passage making the resonator communicate with the intake duct through the through hole.

### Claim 2 (depends on 1)

The intake noise reduction structure according to claim 1,
wherein the vehicle is a cab-over type vehicle in which a front end side of a cab is supported to be tiltable about a tilt axis with respect to a vehicle body frame,
the cab includes a pair of left and right supported members which are fixed to a front lower end portion or a rear lower end portion,
the predetermined component is at least one of a pair of left and right cab mounts provided on the vehicle body side to support the pair of left and right supported members, and
the bracket is a cab mount bracket which is fixed to the vehicle body frame to mount the cab mount.