Bulkhead Cover Air Intake System for Cooler Engine Air
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Solution Overview
Problem
Conventional air intake systems for internal combustion engines face inefficiencies due to drawing warmer air from the engine compartment or contaminants like water and particles when drawing air from outside, which can reduce engine efficiency and cause damage.
Innovation Solution
A vehicle air intake system design featuring a grille, hood, and bulkhead cover with an air intake enclosure and screen that directs cooler exterior air into the engine while preventing water and particles from entering, using an enclosed airflow passage and screen to filter out debris without obstructing airflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If air is drawn from inside the engine compartment, then the air intake system is simple to implement, but the air temperature is higher and density is lower reducing engine efficiency
Solution Approach 1:
The bulkhead cover is divided into upper and lower parts that can be separately assembled, allowing the air intake passage to be integrated into the bulkhead cover structure without requiring separate complex components, thus maintaining ease of manufacture while enabling cooler air intake from exterior locations
Solution Approach 2:
The bulkhead cover acts as an intermediary component that bridges the exterior air intake port and the engine air intake system, allowing cooler exterior air to be channeled through the bulkhead cover into the engine compartment while filtering out contaminants
2Temperature
If air is drawn via an exterior intake port, then cooler air is obtained improving engine efficiency, but water and particles enter the engine intake causing damage
Solution Approach 1:
A screen is installed at the air intake port location on the bulkhead cover, providing localized filtration exactly where exterior air enters the system, allowing cooler air to be obtained while filtering out water and particles before they can damage the engine
Solution Approach 2:
The screen serves as an intermediary filtering layer between the exterior environment and the engine intake system, allowing cooler air to pass through while blocking water and particles, thus resolving the contradiction between obtaining cool air and preventing contaminant ingress
3Object-affected harmful factors
If a screen is added to filter air intake, then particles and water are blocked, but airflow obstruction may occur
Solution Approach 1:
The screen is positioned locally at the air intake port on the bulkhead cover rather than throughout the entire air intake passage, providing effective filtration at the entry point while maintaining unobstructed airflow through the rest of the passage to the engine
Data Source
AI summary
A vehicle air intake system includes a grille disposed along the front portion of an engine compartment, a hood disposed over the engine compartment, and an air intake enclosure disposed over a bulkhead extending laterally across the engine compartment. The intake enclosure has an intake port. A bulkhead cover is disposed in the engine compartment below the hood for covering the bulkhead. The bulkhead cover has an upper part and a lower part. The upper part is sealingly engaged to both the intake port and the lower part. The lower part defines a bulkhead cover intake port. An airflow path extends from the grille through the bulkhead cover intake port and to the air intake enclosure intake port. The airflow path is defined by the grille and the bulkhead cover.