Back Beam Enclosure for Virtual Engine Sound Amplification

Solution Overview

Problem

Existing virtual engine sound systems (VESS) face challenges in increasing low band sound output while minimizing material costs and weight, and they often compromise package space due to separate enclosures, limiting design freedom in the engine room.

Innovation Solution

The system utilizes the internal space of a back beam, which serves both as a crash performance component and an enclosure, to amplify low band engine sounds and output them in three directions, eliminating the need for a separate enclosure and optimizing package space.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If a separate enclosure is installed on the rear surface of the speaker to increase low band sound output, then low band sound amplification is improved, but material costs and weight increase

Engineering Contradiction:

Improvelow band sound outputVSAvoidweight

Core Design Contradiction:

Illumination intensityVSWeight of stationary object

Solution Approach 1:

The patent merges the separate enclosure with the back beam structure by integrating the speaker mounting function and enclosure function into a single unified back beam component. The back beam's internal space is utilized as the enclosure cavity, eliminating the need for additional enclosure materials while maintaining low band sound amplification performance.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The back beam is designed to serve multiple functions simultaneously: it provides structural support for crash performance, acts as the enclosure housing for the speaker, and creates the acoustic cavity for low band sound amplification. This multi-functionality eliminates the need for separate components, reducing both material costs and weight.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Illumination intensity

If a separate enclosure is installed on the rear surface of the speaker to increase low band sound output, then low band sound amplification is improved, but material costs increase

Engineering Contradiction:

Improvelow band sound outputVSAvoidmaterial costs

Core Design Contradiction:

Illumination intensityVSLoss of substance

Solution Approach 1:

The patent merges the separate enclosure with the back beam structure by integrating the speaker mounting function and enclosure function into a single unified back beam component. The back beam's internal space is utilized as the enclosure cavity, eliminating the need for additional enclosure materials while maintaining low band sound amplification performance.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The back beam is designed to serve multiple functions simultaneously: it provides structural support for crash performance, acts as the enclosure housing for the speaker, and creates the acoustic cavity for low band sound amplification. This multi-functionality eliminates the need for separate components, reducing both material costs and weight.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Illumination intensity

If a separate enclosure is installed on the rear surface of the speaker, then low band sound amplification is improved, but package space decreases due to cooler disposal requirements

Engineering Contradiction:

Improvelow band sound outputVSAvoidpackage space

Core Design Contradiction:

Illumination intensityVSVolume of moving object

Solution Approach 1:

The patent merges the separate enclosure with the back beam structure by integrating the speaker mounting function and enclosure function into a single unified back beam component. The back beam's internal space is utilized as the enclosure cavity, eliminating the need for additional enclosure materials while maintaining low band sound amplification performance.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent utilizes the internal three-dimensional space of the back beam for acoustic purposes, transforming a structural component into a multi-functional element that provides both mechanical support and acoustic enclosure volume, thereby optimizing package space utilization.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This approach reduces material costs and weight, enhances low band sound amplification, and allows for efficient use of package space, ensuring compliance with regulations while providing effective sound diffusion in environmentally friendly vehicles.

Implementation Method 1

an enclosure case configured to form a case enclosure in which the speaker may be accommodated and configured to perform low band amplification of the engine sound using the case enclosure

Methodology Applied

Scientific EffectAcoustic resonance: Resonance

Implementation Method 2

an enclosure back beam configured to be divided into a speaker enclosure which has an internal space deformed by an external shock

Methodology Applied

Scientific EffectShock absorption through deformation: Deformation

Data Source

PatentUS9731554B2Enclosure expansion type virtual engine sound system and vehicle using the same

Publication Date: 2017.08.15 HYUNDAI MOTOR CO LTD

AI summary

An enclosure expansion type virtual engine sound system is provided. The system includes an enclosure case having a case enclosure accommodating a speaker to which a virtual engine sound is output and an enclosure back beam with an internal space divided into a speaker enclosure and a expanded enclosure as an extended space of the case enclosure for low band amplification of the engine sound and a space in which the engine sound is output in three directions. Accordingly, the enclosure back beam implements a low band amplification function in addition to a crash absorbing function. The engine sound is output in three directions through an internal space of the enclosure back beam, thereby solving a space restriction of a narrow engine room while satisfying regulations of the speaker.