Diagonal Intake Pipe for Engine Hood Clearance
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Solution Overview
Problem
Transversely-mounted internal combustion engines face challenges with intake collectors being too high relative to the engine hood and having imbalanced characteristics between cylinder banks due to differing air induction pipe lengths, leading to suboptimal performance.
Innovation Solution
An internal combustion engine intake device is designed with a partitioned intake collector and air induction pipe, where the first air induction pipe extends diagonally downward, dividing its space into two sections that fluidly communicate with the collector spaces, ensuring the first boundary plane is perpendicular to the intake air flow and coplanar with the second boundary plane, thus equalizing the flow path lengths and maintaining a sufficient gap between the intake collector and engine hood.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the intake collector is positioned high relative to the engine hood to accommodate the engine layout, then the engine can be properly mounted, but the height of the intake collector increases and the gap between the intake collector and engine hood decreases
Solution Approach 1:
The patent introduces a diagonal extension of the first air induction pipe at an angle between 30-60 degrees from the horizontal plane, transitioning from a conventional vertical arrangement to a three-dimensional diagonal configuration. This dimensional change allows the air induction pipe to reach the required height position while maintaining an adequate gap with the engine hood, effectively resolving the spatial conflict between intake collector height and hood clearance.
2Volume of stationary object
If the air induction pipes for upper and lower portions of the intake collector have different lengths, then the intake collector can be compact, but the characteristics of the two cylinder banks become imbalanced
Solution Approach 1:
The patent divides the air induction system into distinct segments: a first air induction pipe serving the upper portion and a second air induction pipe serving the lower portion. Each pipe is independently configured with specific geometric parameters (length, diameter, curvature) to compensate for the different positions of the cylinder banks. This segmentation allows each pipe to be optimized for its specific function while maintaining overall system balance.
Solution Approach 2:
The patent applies different geometric characteristics to different parts of the air induction system. The first air induction pipe has specific dimensions and curvature tailored for the upper cylinder bank, while the second air induction pipe has different dimensions optimized for the lower cylinder bank. This local quality approach ensures that each portion of the system is optimized for its specific location and function, achieving balanced characteristics across both cylinder banks.
Data Source
AI summary
An internal combustion engine intake device includes an intake collector and a first air induction pipe. The intake collector includes a first collector space and a second collector space. The first air induction pipe extends diagonally downward from an upstream side of the intake collector with respect to a horizontal direction of the vehicle. The first air induction pipe includes a first air induction space and a second air induction space. The intake collector and the first air induction pipe are configured and arranged such that a first boundary plane defined between the first collector space and the first air induction space is substantially perpendicular to a direction of an intake air flow from the first air induction space into the first collector space and the first boundary plane is substantially coplanar with a second boundary plane defined between the second collector space and the second air induction space.