Cylinder Head Cooling Guide Wall for Combustion Chamber Heat Dissipation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional cylinder head cooling apparatuses for engines have low cooling efficiency around the auxiliary combustion chamber wall due to inadequate diversion of engine cooling water, leading to inefficient heat dissipation and potential damage from excessive cooling.
Innovation Solution
Incorporating a cooling water guide wall with a widening shape upstream of the auxiliary combustion chamber wall to divert engine cooling water smoothly towards both sides, preventing direct impact and enhancing heat dissipation while maintaining efficient water flow within the cooling water jacket.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If engine cooling water flows directly along the auxiliary combustion chamber wall, then cooling efficiency should be high, but the auxiliary combustion chamber wall takes a direct hit of cooling water causing excessive cooling
Solution Approach 1:
The upstream cooling water guide wall acts as an intermediary structure between the cooling water flow and the auxiliary combustion chamber wall. It redirects the cooling water flow path, causing water to flow along both sides of the guide wall and then along the auxiliary combustion chamber wall, preventing direct impact while maintaining cooling efficiency.
2Temperature
If cooling water flow is increased to improve cooling efficiency, then heat dissipation improves, but water flow uniformity deteriorates and wake flow increases
Solution Approach 1:
The upstream cooling water guide wall is designed with a curved surface that gradually widens toward the downstream side. This curved geometry smoothly guides the cooling water flow, preventing abrupt changes in flow direction and reducing wake flow generation, thereby maintaining flow uniformity while improving heat dissipation.
3Device complexity
If conventional cooling water jacket design is used, then structure is simple, but cooling efficiency around auxiliary combustion chamber wall is low
Solution Approach 1:
The cooling water jacket is segmented by introducing the upstream cooling water guide wall, which divides the cooling water flow into multiple paths along both sides of the auxiliary combustion chamber wall. This segmentation improves cooling efficiency without significantly increasing overall structural complexity.
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 design enhances cooling efficiency around the auxiliary combustion chamber, suppresses excessive cooling, and improves engine heat efficiency and starting performance during cold periods by ensuring uniform water flow and reduced wake flow generation.
Implementation Method 1
a cooling water guide wall is provided upstream of the auxiliary combustion chamber wall in a cooling water passing path of the cooling water jacket, and the upstream cooling water guide wall is formed into a shape whose width gradually widens toward a downstream side
Implementation Method 2
engine cooling water passing through a cooling water jacket is caused to flow along a cylindrical auxiliary combustion chamber wall
Data Source
AI summary
There is provided a cylinder head cooling apparatus of an engine capable of enhancing cooling efficiency around an auxiliary combustion chamber wall. The cylinder head cooling apparatus of an engine including a cylinder head having therein an intake port, an exhaust port, an auxiliary combustion chamber, and a cooling water jacket, in which an intake port wall, an exhaust port wall, and an auxiliary combustion chamber wall are placed in the cooling water jacket, the cooling water jacket includes a cooling water inlet and a cooling water outlet, engine cooling water flowed from the cooling water inlet into the cooling water jacket flows out from the cooling water outlet through the cooling water jacket, wherein a cooling water guide wall is provided upstream of the auxiliary combustion chamber wall in a cooling water passing path of the cooling water jacket, and the upstream cooling water guide wall is formed into a shape whose width gradually widens toward a downstream side.