# US 2019/0172441 A1 · Passive sound enhancement system for a vehicle

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- Number: US 2019/0172441 A1
- Document ID: US20190172441A1
- Status: Published application
- Kind: A1
- Application number: 15/831,994
- Filed: 2017-12-05
- Published: 2019-06-06
- Earliest claimed: 2017-12-05
- Assignees: GM Global Technology Operations LLC
- Applicants: GM Global Technology Operations LLC
- Inventors: Frank C. Valeri; Scott M. Reilly; John Miller; Song He
- Web page: https://patentgrep.com/patent/US20190172441A1

## CPC

- B60K 1/00: Arrangement or mounting of electrical propulsion units (B60K7/00 takes precedence; arrangement or mounting of plural diverse prime-movers for mutual or common propulsion B60K6/00)
- G10K 11/24: for conducting sound through solid bodies, e.g. wires
- G10K 11/08: Non-electric sound-amplifying devices, e.g. non-electric megaphones (amplifying by horns G10K11/02; amplifying by focusing G10K11/26)
- F02M 35/1294: {Amplifying, modulating, tuning or transmitting sound, e.g. directing sound to the passenger cabin; Sound modulation}
- G10K 2210/1282: Automobiles
- G10K 2210/129: Vibration, e.g. instead of, or in addition to, acoustic noise
- G10K 2210/321: Physical
- 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
- G10K: SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF

## Abstract

A powertrain component for a vehicle including a housing, and a mechanical system arranged in the housing. The mechanical system provides motive power to the vehicle. A passive sound enhancement system includes a bracket mounted to the housing. The bracket is selectively tuned to respond to one or more selected frequencies of the powertrain component.

## Claims

### Claim 1

A powertrain component for a vehicle comprising:
a housing;
a mechanical system arranged in the housing, the mechanical system providing motive power to the vehicle; and
a passive sound enhancement system including a bracket mounted to the housing, the bracket being selectively tuned to respond to one or more selected frequencies of the powertrain component.

### Claim 2 (depends on 1)

The powertrain component according to claim 1, further comprising:
another bracket mountable at an occupant compartment of the vehicle; and
a sound transmitting device extending between and connecting the bracket and the another bracket.

### Claim 3 (depends on 2)

The powertrain component according to claim 2, wherein the sound transmitting device comprises a cable.

### Claim 4 (depends on 2)

The powertrain component according to claim 2, wherein the sound transmitting device comprises a sheathed cable.

### Claim 5 (depends on 2)

The powertrain component according to claim 2, wherein the sound transmitting device comprises a vehicle control cable.

### Claim 6 (depends on 1)

The powertrain component according to claim 1, wherein the bracket includes a cantilevered end.

### Claim 7 (depends on 6)

The powertrain component according to claim 6, wherein the cantilevered end supports a mass.

### Claim 8 (depends on 7)

The powertrain component according to claim 7, wherein the mass is connected to the cantilevered end through a resilient member.

### Claim 9 (depends on 6)

The powertrain component according to claim 6, wherein the mass includes a selected size and weight that possess a selected response when exposed to the one or more selected frequencies of the powertrain component.

### Claim 10 (depends on 1)

The powertrain component according to claim 1, wherein the mechanical system comprises an electric motor.

### Claim 11

A vehicle comprising:
a body including an occupant compartment; and
a powertrain component supported in the body for providing motive power to the vehicle, the powertrain component comprising:
a housing;
a mechanical system arranged in the housing; and
a bracket mounted to the housing, the bracket being selectively tuned to respond to one or more selected frequencies of the powertrain component.

### Claim 12 (depends on 11)

The vehicle according to claim 11, further comprising:
another bracket mountable at the occupant compartment of the vehicle; and
a sound transmitting device extending between and connecting the bracket and the another bracket.

### Claim 13 (depends on 12)

The vehicle according to claim 12, wherein the sound transmitting device comprises a cable.

### Claim 14 (depends on 12)

The vehicle according to claim 12, wherein the sound transmitting device comprises a sheathed cable.

### Claim 15 (depends on 12)

The vehicle according to claim 12, wherein the sound transmitting device comprises a vehicle control cable.

### Claim 16 (depends on 12)

The vehicle according to claim 12, wherein the mechanical system comprises an electric motor.

### Claim 17 (depends on 11)

The vehicle according to claim 11, wherein the bracket includes a cantilevered end.

### Claim 18 (depends on 17)

The vehicle according to claim 17, wherein the cantilevered end supports a mass.

### Claim 19 (depends on 18)

The vehicle according to claim 18, wherein the mass includes a selected size and weight that possess a selected response when exposed to the one or more selected frequencies of the powertrain component and is connected to the cantilevered end through a resilient member.