Multi-Stage Fresh Air Inlet System for Engine Induction
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Solution Overview
Problem
Existing engine air induction systems face challenges in delivering clean, dry air with minimal pressure drop and moisture separation, as they often draw hot air from the engine compartment, which can lead to inefficiencies and contamination.
Innovation Solution
A fresh air inlet system with multiple flow sections, including longitudinal, first vertical, second vertical, and transverse flow sections, that redirect airflow to separate moisture and reduce pressure drop, featuring an inlet baffle, inlet panel, and outlet baffle to direct air efficiently into the induction duct.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If air is drawn from the engine compartment, then the air induction system can provide air for combustion, but the air becomes hot and contaminated
Solution Approach 1:
The patent extracts the air intake function from the engine compartment by providing a separate fresh air inlet system that draws air from outside the vehicle. The inlet panel with windows and baffles creates a dedicated air intake path that is physically separated from the engine compartment, thereby extracting the harmful effects (heat and contamination) while retaining the beneficial function of air supply for combustion.
Solution Approach 2:
The patent introduces an intermediary fresh air inlet system between the external environment and the engine. This intermediate system includes the inlet panel, windows, and baffles that act as a mediator to provide clean, cool air to the engine without direct exposure to engine compartment contaminants and heat.
2Device complexity
If a simple air inlet design is used, then the device complexity is reduced, but moisture separation and pressure drop control are insufficient
Solution Approach 1:
The patent segments the air inlet system into multiple functional components: an inlet panel with multiple windows, inlet baffles, outlet baffles, and flow sections. This segmentation allows each component to perform a specific function (directing airflow, separating moisture, reducing pressure drop) while collectively achieving reliable moisture separation and pressure control without excessive overall complexity.
Solution Approach 2:
The patent introduces multiple flow sections (longitudinal, vertical, transverse) that add dimensional complexity to the airflow path. By creating a multi-dimensional flow pattern rather than a simple linear path, the system achieves effective moisture separation through successive direction changes while maintaining a manageable structural complexity through the use of standardized panel and baffle components.
3Reliability
If airflow is directed through multiple flow sections, then moisture separation is improved, but the device complexity increases
Solution Approach 1:
The airflow path is segmented into distinct flow sections (longitudinal, vertical, transverse) with specific functions. Each section is implemented using simple geometric features of the inlet panel and baffles rather than complex mechanical components. This segmentation achieves reliable moisture separation through systematic flow direction changes while keeping individual components simple and manufacturable.
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 system effectively delivers a high volume of clean, dry air with minimal pressure drop and moisture separation, improving engine performance by reducing noise, vibration, and harshness while minimizing the intake of hot air from the engine compartment.
Implementation Method 1
The system effectively delivers a high volume of clean, dry air with minimal pressure drop and moisture separation
Implementation Method 2
The first vertical flow section is substantially perpendicular to the longitudinal flow section and the transverse flow section is substantially perpendicular to both the longitudinal flow section and the first vertical flow section. Therefore, intake air flows successively from the longitudinal flow section to the first vertical flow section, from the first vertical flow section to the transverse flow section, and from the transverse flow section to the induction duct.
Data Source
AI summary
A fresh air inlet system includes an inlet panel defining first windows and second windows, offset from the first windows. An inlet baffle is below the inlet panel and an outlet baffle is opposite the inlet panel from the inlet baffle. The outlet baffle at least partially defines an outlet plenum providing air-flow communication to an induction duct. A longitudinal flow section is defined between the inlet baffle and the inlet panel. A first vertical flow section is defined by the first windows and a second vertical flow section is defined by the second windows. The first vertical flow section is substantially perpendicular to the longitudinal flow section and the second vertical flow section is substantially perpendicular to the longitudinal flow section. Therefore, intake air flows successively from the longitudinal flow section to the first vertical flow section, to the second vertical flow section, and to the induction duct.