Intake Sound Amplification Pipe for Natural Engine Noise
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Solution Overview
Problem
Existing internal combustion engine devices for amplifying intake sound produce an unnatural and unpleasant sound in the passenger compartment due to inadequate sound wave transmission.
Innovation Solution
The internal combustion engine incorporates an intake sound amplification device with an amplification pipe oriented towards the passenger compartment, sealed by an insulating element that allows sound waves to propagate while preventing air circulation, and features amplification channels and manifolds designed to combine acoustic waves in a harmonious frequency range, enhancing the sound experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a membrane and bellows are used to amplify intake sound, then sound amplification is achieved, but the sound becomes unnatural and unpleasant
Solution Approach 1:
The patent extracts only the necessary acoustic function from the complex membrane-bellows system. By removing the bellows and using a simple rigid amplification pipe with proper positioning, the invention achieves sound amplification without the artificial characteristics introduced by flexible membranes and bellows structures.
Solution Approach 2:
The invention creates a simplified copy of the sound amplification function. Instead of copying the complex membrane-bellows mechanism, it uses a straightforward rigid pipe structure that replicates the essential acoustic amplification effect while maintaining natural sound characteristics.
2Ease of operation
If an amplification pipe with membrane and bellows is used, then intake sound is conveyed to the passenger compartment, but the sound quality deteriorates
Solution Approach 1:
The patent replaces the mechanical membrane-bellows system with a rigid amplification pipe structure. This substitution eliminates the complex mechanical vibrations and deformations that distorted the sound, while maintaining effective sound transmission to the passenger compartment.
3Ease of manufacture
If a simple amplification pipe is used, then manufacturing is simplified, but sound amplification effectiveness is reduced
Solution Approach 1:
The patent optimizes specific parameters of the simple amplification pipe structure, including its positioning relative to the intake manifold, dimensions, and orientation toward the passenger compartment. These parameter adjustments ensure effective sound amplification while maintaining manufacturing simplicity.
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
The solution results in a more natural and pleasant intake sound experience for drivers and passengers by amplifying the sound in a harmonious and intense manner, addressing the unnatural sound issues of previous technologies.
Implementation Method 1
an insulating element (29) which seals the amplification pipe (27) in a tight manner... allows sound waves to propagate
Implementation Method 2
an amplification pipe (27)... oriented towards the passenger compartment... amplifying the sound in a harmonious and intense manner
Data Source
AI summary
An internal combustion engine comprising: a plurality of cylinders; at least one intake manifold, which receives fresh air from the outside; a plurality of intake channels, each connecting a cylinder to the intake manifold; and an intake sound amplification device, which is provided with an amplification pipe, an insulating element sealing the amplification pipe in a tight manner, a plurality of amplification channels, each originating from a corresponding intake channel, and an amplification manifold, which, on one side, is connected to all amplification channels and, on the other side, is connected to the amplification pipe.