Engine Cooling Jacket Turbulence Chamber Heat Transfer
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Solution Overview
Problem
Existing engine cooling systems face challenges in enhancing heat transfer capacity without increasing weight or load on the water pump, particularly when increasing power output leads to higher heat production.
Innovation Solution
A cooling jacket design with turbulence-inducing features, including a turbulence chamber with specific inlet and outlet openings and passageways, imparts a swirling action to the coolant, enhancing velocity and flow direction to improve heat transfer efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the volume and/or rate of coolant flow through the cooling jacket is increased to enhance heat transfer capacity, then heat transfer efficiency is improved, but the load on the water pump increases due to increased pressure drop
Solution Approach 1:
The patent changes the flow regime parameter from laminar to turbulent flow by introducing a turbulence promoter. This turbulence increases the heat transfer coefficient, allowing for enhanced heat transfer capacity without needing to increase the coolant flow rate or water pump power. The turbulence promoter creates chaotic flow patterns that improve thermal mixing and heat exchange efficiency.
Solution Approach 2:
The turbulence promoter acts as an intermediary device inserted within the cooling jacket. It mediates between the coolant flow and the heat transfer process by generating turbulence that enhances heat transfer. This intermediary element allows the system to achieve better heat transfer performance without directly increasing pump power or flow rate.
2Temperature
If the cooling jacket is made larger to increase heat transfer capacity, then heat transfer efficiency is improved, but the weight of the system increases
Solution Approach 1:
Instead of increasing the physical size of the cooling jacket, the patent changes the flow dynamics parameter by introducing turbulence. This allows the existing jacket geometry to operate at higher heat transfer efficiency, achieving enhanced cooling capacity without adding weight from larger components.
Solution Approach 2:
The patent introduces dynamic turbulence into the otherwise steady laminar flow. This dynamic flow behavior increases heat transfer effectiveness within the same physical space, avoiding the need for a larger, heavier cooling system. The turbulence promoter creates time-varying flow patterns that enhance thermal exchange.
3Power
If the power output of the engine is increased to improve performance, then mechanical energy output is improved, but the amount of heat produced by the engine increases
Solution Approach 1:
The patent converts the harmful effect of increased heat production (resulting from higher engine power) into a beneficial outcome. By introducing turbulence, the system enhances heat transfer efficiency, allowing the additional heat from high-power operation to be removed more effectively. The turbulence transforms the thermal management challenge into an opportunity for improved cooling performance.
Solution Approach 2:
The patent changes the heat transfer coefficient parameter through turbulence induction. This parameter change allows the cooling system to handle higher heat loads from increased engine power output without overheating. The enhanced heat transfer capability enables the engine to operate at higher power levels with adequate thermal management.
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 design achieves more even and increased heat transfer capacity, reducing the risk of engine failure due to overheating while minimizing weight and pump load, effectively addressing the need for enhanced cooling in high-power engines.
Implementation Method 1
At the turbulence chamber a swirling action is imparted to fluid media exiting the turbulence chamber through the outlet opening
Data Source
AI summary
A cooling jacket is formed at least in part within the cylinder head mounted on an engine block defining one or more piston cylinders and one or more intake and exhaust ports in communication with each piston cylinder. The cooling jacket includes a first passageway, a second passageway and a turbulence chamber. The first passageway extends from a first flow passage and intersects the turbulence chamber at a first angular position, and the second passageway extends from a second flow passage and intersects the turbulence chamber at a second angular position different from the first angular position. A swirling action is imparted to fluid media passing through the turbulence chamber.