Cylinder Head Intake Port Partition Integration
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Solution Overview
Problem
The existing intake structures for internal combustion engines face challenges in maintaining the fluidity of molten metal during casting due to heat absorption by molds, leading to poor fluidity and reduced rigidity in the partition member and inlet pipe mount areas.
Innovation Solution
An intake structure where the partition member and inlet pipe mount portion are integrally formed with the cylinder head, with a joint coupling them, preventing heat absorption and increasing the volume for better heat retention, thus enhancing the fluidity and rigidity of the molten metal during casting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a hollow or vacant area is formed between the partition member and inlet pipe mount in the prior art, then the partition member can be separately positioned, but the fluidity of molten metal becomes poor and heat is absorbed by the mold
Solution Approach 1:
The partition member and inlet pipe mount are merged into a single integrally formed component. The partition member is directly formed within the inlet pipe mount structure, eliminating the need for separate positioning and hollow spaces. This integration ensures continuous molten metal flow path and prevents heat absorption by separate mold cavities, thereby maintaining high fluidity during casting while simplifying the manufacturing process.
2Strength
If the partition member is cast integrally with the cylinder head, then structural rigidity is improved, but heat absorption by the mold causes molten aluminum to solidify before flowing into the partition member
Solution Approach 1:
The partition member is merged with the inlet pipe mount structure, forming an integrated component that is cast as a single piece with the cylinder head. This merging creates a continuous thermal mass that retains heat during the casting process, preventing premature solidification of the molten aluminum while ensuring the partition member is properly filled. The integrated structure achieves both high structural rigidity and maintained molten metal fluidity.
3Manufacturing precision
If the inlet pipe mount portion and partition member are integrally formed, then heat retention is improved and fluidity increases, but the volume of metal required increases
Solution Approach 1:
The partition member and inlet pipe mount are merged into a single integrated structure, eliminating redundant metal volumes that would exist if these components were separate. The integration creates an efficient thermal mass distribution that retains heat where needed while minimizing overall metal consumption. The continuous flow path design ensures adequate fluidity without requiring excessive metal volume.
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 the fluidity and retention of heat in the molten metal, increasing its flow into the partition member and enhancing the structural rigidity around the inlet pipe mount, while also providing better cooling for the spark ignition plug area.
Implementation Method 1
the fluidity of a molten metal that flows to cast the thin partition member
Implementation Method 2
make it easy to retain the heat of a molten metal when the molten metal is introduced to cast the intake structure, thereby increasing the fluidity of the molten metal
Implementation Method 3
the molten aluminum that is about to flow to cast the partition member has its heat absorbed by a mold for forming the hollow or vacant area, so that the molten aluminum tends to solidify before it flows into the partition member
Data Source
Figure 1
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Figure 3
AI summary
In an internal combustion engine intake structure, an inlet pipe 6 is connected to an intake port 42, providing a continuous intake air-fuel mixture passage 80, which is divided into a first intake air-fuel mixture passageway 80A and a second intake air-fuel mixture passageway 80B by a partition 85, a partition member 85B in the intake port 42 being integrally formed with the cylinder head 32. The cylinder head 32 has a connection face member 100 for connection to the inlet pipe 6, the connection face member 100 including an inlet pipe mount portion 101 for receiving an inlet pipe threaded fastening member 103. The partition member 85B in the intake port 42 are integrally formed with the inlet pipe mount portion 101. At least a part of the inlet pipe mount portion 101 is positioned on an extension of the partition member 85B in a direction across the intake port 42 on an upstream end face 42a of the intake port 42. With this structure, when the cylinder head 32, particularly a region including the partition member 85B, is cast, it is easy to retain the heat of a molten metal, and fluidity of the molten metal is increased.