Integrated Engine Intake Pipe Structure for Rigidity and Noise Reduction
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Solution Overview
Problem
Existing internal combustion engine pipes are prone to deformation or damage due to external forces, particularly at coupling sections, and lack effective noise reduction mechanisms for gas vibrations.
Innovation Solution
The internal combustion engine pipe features a cylindrical main body with a flange and a chamber forming portion that integrates with the pipe and flange, providing enhanced structural integrity and noise reduction through a resonator chamber connected to the intake and exhaust passages, utilizing a solenoid valve and actuator to manage gas flow and pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the inner cylinder and outer cylinder are coupled at opposite ends only, then the exhaust pipe can be manufactured with simpler processes, but the coupling sections become vulnerable to deformation and damage under external forces
Solution Approach 1:
The patent applies local quality by providing reinforcement ribs specifically at the coupling sections where the inner and outer cylinders are joined. These reinforcement ribs are localized structures that strengthen only the vulnerable coupling areas without requiring complete redesign of the entire pipe structure, thus maintaining manufacturing simplicity while improving reliability at critical locations.
2Device complexity
If the inner cylinder and outer cylinder are coupled at opposite ends only, then the structure remains simple and easy to assemble, but external forces concentrate on the coupling sections causing deformation or damage
Solution Approach 1:
The reinforcement ribs are introduced as localized structural features at the coupling sections. This approach maintains the overall simplicity of the pipe structure while providing targeted strength enhancement where external forces concentrate, resolving the contradiction between structural simplicity and force resistance.
Solution Approach 2:
The reinforcement ribs are pre-formed as integral parts of the inner or outer cylinders during the manufacturing process. This preliminary action of creating reinforcing structures in advance prevents deformation at coupling sections before external forces are applied, maintaining both structural simplicity and strength.
3Ease of manufacture
If separate cylinders are used for the pipe body and flange, then manufacturing and assembly are simplified, but the structure lacks rigidity and requires additional mounting members
Solution Approach 1:
The patent merges the pipe body and flange into a single integrated component formed from one piece of material. This eliminates the need for separate mounting members to attach the flange to the pipe body, while simultaneously improving structural rigidity by creating a unified structure without weak joints.
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 enhances the engine pipe's resistance to external forces, improves rigidity, and reduces noise by distributing external loads and attenuating gas vibrations, while eliminating the need for additional mounting members, thus maintaining structural integrity and reducing noise effectively.
Implementation Method 1
The chamber forming portion is provided to connect the outer surface of the pipe main body and the flange to each other and is integrated with the pipe main body and the flange
Implementation Method 2
some of the exhaust gas flows into the chamber through the through-hole. This reduces the reflected wave of the exhaust pressure and absorbs the increase and decrease in the exhaust pressure. Thus, the noise caused by the increase and decrease in the exhaust pressure is reduced.
Data Source
AI summary
An intake pipe includes a cylindrical pipe main body, a flange, which is provided on an end of the pipe main body in an axial direction and protrudes radially outward about an axis of the pipe main body from an outer surface of the pipe main body, and a chamber forming portion, which is located outside of the pipe main body and defines a chamber. The chamber forming portion is provided to connect the outer surface of the pipe main body and the flange to each other and is integrated with the pipe main body and the flange.