Cylinder Block Cooling Duct Non-Straight Angle Design
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Solution Overview
Problem
Existing cylinder block cooling systems compromise the structural integrity of the cylinder block, leading to reduced durability and longevity, and inadequate cooling of webs between cylinder bores in internal combustion engines.
Innovation Solution
A cooling system with a connecting duct arranged at a non-straight angle within the cylinder block web, forming an obtuse angle with the central axis, enhances structural integrity and cooling efficiency without compromising the block's structure, using a coolant duct that surrounds the cylinder bores and connects separated sections for improved heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling conduits are installed in the cylinder block, then cooling efficiency is improved, but structural integrity is compromised
Solution Approach 1:
The connecting duct is divided into multiple subsections (first subsection, second subsection, etc.) that extend inwardly toward the central axis at non-straight angles. This segmentation allows the cooling passage to be distributed through the web structure without creating a single large void, thereby maintaining structural integrity while providing effective cooling coverage.
Solution Approach 2:
The cooling system is localized to specific regions of the cylinder block. The connecting duct is arranged within the web between cylinder bores and extends selectively toward the central axis, providing cooling where heat generation occurs (near combustion chambers and friction points) without compromising the overall structural integrity of the entire cylinder block.
2Temperature
If cooling conduits are installed in the cylinder block, then cooling efficiency is improved, but durability is decreased
Solution Approach 1:
The connecting duct is segmented into multiple subsections that extend inwardly at non-straight angles. This segmentation creates a more distributed cooling structure that reduces stress concentrations and improves durability by avoiding large continuous voids in the cylinder block web.
Solution Approach 2:
The connecting duct is arranged at non-straight angles rather than forming straight-line passages. This curved or angular configuration reduces stress concentrations at duct intersections and walls, thereby improving the durability and longevity of the cylinder block while maintaining effective cooling.
3Strength
If connecting duct extends inwardly toward central axis at non-straight angle, then structural integrity is increased, but manufacturing complexity increases
Solution Approach 1:
The connecting duct is divided into discrete subsections that can be manufactured and assembled separately. This segmentation allows each subsection to be formed using standard manufacturing processes, and the overall non-straight angle configuration is achieved through controlled assembly or multi-step forming operations that are manageable with current manufacturing capabilities.
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 solution increases cylinder block cooling while maintaining structural integrity, enhancing engine efficiency, reducing emissions, and extending engine longevity.
Implementation Method 1
a coolant duct surrounding the cylinder bores at least partially circumferentially and running outside the web, for cooling the cylinder bores with a coolant
Implementation Method 2
a connecting duct arranged completely within the web and producing a connection in terms of flow between parts of the coolant duct that are otherwise separated by the web
Data Source
AI summary
A cooling system in an engine is provided. The cooling system includes a cylinder bore including a central axis, a coolant duct including a first section positioned on a first side of the cylinder bore and a second section positioned on a second side of the cylinder bore, a connecting duct extending between the first section and the second section and including a first end opening into the first section and a second end opening into the second section. The connecting duct includes a first subsection and a second subsection extending inwardly toward the central axis and an intersection of the first subsection and the second subsection in a plane perpendicular to the central axis form a non-straight angle.