Engine Intake System Vertical Filter Orientation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional engine intake systems experience increased air resistance and temperature due to horizontal filtering surfaces and inadequate resonance chamber capacity, leading to inefficient noise reduction in limited engine spaces.
Innovation Solution
The intake system redesigns the air cleaner and resonance chamber to position the filtering surface vertically and expands the resonance chamber capacity along the engine cover width, reducing air resistance and noise by optimizing airflow paths and chamber dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the filtering surface is positioned horizontally to fit within limited engine space, then the air cleaner can be compactly integrated into the engine cover, but the intake air resistance increases due to vertical flow direction changes
Solution Approach 1:
The patent changes the filtering surface orientation from horizontal to vertical, transforming the airflow direction from vertical to horizontal. This dimensional change allows the intake air to flow horizontally through the filter element, eliminating unnecessary vertical flow direction changes and reducing intake air resistance while maintaining compact integration within the engine cover space
2Device complexity
If the intake duct extends longitudinally along the engine cover to connect the air cleaner, then the system can be compact, but the resonance chamber capacity is reduced due to space division
Solution Approach 1:
The patent repositions the resonance chamber to extend in the width direction of the vehicle rather than the longitudinal direction, utilizing the widthwise space within the engine cover. This dimensional reorientation allows the resonance chamber to achieve sufficient capacity without being constrained by the longitudinal intake duct layout, effectively using unused widthwise space to improve noise reduction performance
3Device complexity
If the intake duct inlet opens to the front surface of the engine cover, then the structure is simple, but hot air from the radiator increases the intake air temperature
Solution Approach 1:
The patent extracts the intake duct inlet from the front surface of the engine cover and repositions it to the side surface, specifically to a position above the transmission. This spatial extraction removes the intake inlet from the hot air flow path near the radiator, preventing hot air intrusion while maintaining a relatively simple intake duct structure that utilizes the side opening for cooler air intake
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 configuration improves engine performance by minimizing air resistance and noise, ensuring efficient airflow and noise silencing within the limited engine space.
Implementation Method 1
a resonance chamber reduces the intake noise
Implementation Method 2
a resonance chamber reduces the intake noise
Implementation Method 3
an element of an air cleaner removes the dust in the intake air
Data Source
AI summary
The purpose of the intake system, which is disposed in a limited space above the engine, is to improve engine performance by preventing increase in both temperature and resistance of intake air, and also to reduce noise of the intake air. In the intake system, a rear wall extending downwardly is formed in a lower half body that is joined to a rear end of an engine cover, and a mounting frame section for attaching an element is formed in a rear wall section. An upstream-side casing is formed forward of the rear wall section. An intake duct has a downstream end connected to a front surface of the upstream-side casing adjacent to a transmission. Further, the intake duct extends widthwise of the vehicle and has an upstream end opened to the side edge of the engine cover adjacent to the transmission. A resonance chamber casing is joined to the side departing from the transmission through a communication pipe forward of the upstream-side casing. The resonance chamber casing is formed to extend along the full width of the engine cover so as to cover the front of the intake duct.