Coolant Management Tool Vacuum Drain Refill
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Solution Overview
Problem
The conventional methods for draining and refilling engine cooling systems are time-consuming, prone to spilling and contamination, and often result in trapped air, which can cause damage to EGR coolers and trigger engine warnings or shutdowns due to the complexity of the process.
Innovation Solution
A coolant management tool that includes a storage tank connected to the drainage port, a vacuum module, and a pressure module to efficiently drain and refill the cooling system, using vacuum and pressure to extract coolant and evacuate air, reducing the risk of contamination and air pockets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the petcock is opened to drain coolant under gravity, then the coolant can flow out of the cooling system, but air can enter the system and create vacuum that impedes coolant flow
Solution Approach 1:
A vacuum breaker valve is introduced as an intermediary component in the drainage system. This valve allows air to enter the cooling system in a controlled manner, breaking the vacuum that forms during drainage and preventing flow impedance. The vacuum breaker acts as a mediator between the drainage process and the air intake, enabling smooth coolant flow without creating harmful vacuums.
2Productivity
If coolant is collected in an open pan beneath the petcock, then the coolant can be drained, but the coolant is exposed to contamination and spilling
Solution Approach 1:
A flexible hose or tubing is used to create a closed pathway for coolant drainage, replacing the open pan collection method. The flexible conduit allows the coolant to be directed from the drainage point to a containment vessel without exposure to the environment, preventing contamination and spilling while maintaining drainage efficiency.
3Ease of operation
If coolant is poured into the filler neck after draining, then the cooling system can be refilled, but the process is time-consuming and prone to spilling and contamination
Solution Approach 1:
Instead of pouring coolant into the system from the top (filler neck), the system is inverted by connecting the drainage port to a storage tank and using vacuum pressure to draw coolant upward into the cooling system. This reverse approach eliminates the need for manual pouring, reduces spilling and contamination risks, and speeds up the refilling process.
Solution Approach 2:
Vacuum pressure is applied to the cooling system through the connected storage tank to create a pressure differential that draws coolant into the system automatically. This pneumatic/hydraulic method replaces manual pouring, enabling faster and cleaner refilling by utilizing pressure differentials rather than gravity-dependent pouring.
4Reliability
If the engine is run to bleed trapped air from the cooling system, then air can escape, but the process is time-consuming
Solution Approach 1:
The cooling system is evacuated of air before coolant refilling by applying vacuum pressure through the connected storage tank. This preliminary action removes trapped air pockets beforehand, preventing them from causing damage or triggering fault codes. By addressing air removal before refilling rather than after, the process is both faster and more effective.
Solution Approach 2:
Vacuum pressure is applied to the cooling system to actively evacuate air pockets from all high points and complex passages. This pneumatic method is far more efficient than relying on engine operation to naturally bleed air, as the vacuum actively pulls air out of the system rather than waiting for it to rise and escape during engine running.
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 tool significantly reduces the time and risk of spilling and contamination during coolant management, effectively eliminating air pockets and preventing engine issues by ensuring a more controlled and efficient draining and refilling process.
Implementation Method 1
maintaining a vacuum while drawing at least a portion of the coolant from the storage tank up through the drainage port, up through the cooling system
Implementation Method 2
applying a higher pressure to the cooling system from the pressure module, extracting under higher pressure at least a portion of the coolant from the cooling system into the storage tank
Data Source
AI summary
A method of refilling coolant from a fluid cooling system of an engine, where the fluid cooling system has a surge tank or pressure cap, includes the steps of sealingly connecting a storage tank of a coolant management tool to a drainage port of the cooling system, wherein the drainage port is located at the bottom of the fluid cooling system. The storage tank stores the coolant to refill the cooling system. The method includes installing a vacuum module to the surge tank or pressure cap. The method also includes the steps maintaining a vacuum while drawing at least a portion of the coolant from the storage tank up through the drainage port, up through the cooling system, and to a level just upstream of the vacuum module.