Engine Oil Filtration Tank Using Vacuum Drain and Pneumatic Refill
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Solution Overview
Problem
The current methods for handling fluids in engine units, such as auxiliary power units, during testing are not cost-effective and environmentally friendly, as they require draining and disposing of fluids, which is inefficient and undesirable.
Innovation Solution
An oil storage and filtration system that includes an on/off valve, fill/drain valve, control valve, pressure/vacuum valve, and storage tank, which allows for selective pressurization and vacuum conditions to transfer oil from the engine unit to a storage tank and back, enabling efficient reuse of the oil without external power sources or external electrical power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If oil is drained and disposed of after engine unit testing, then the engine unit can be delivered without fluids, but this is not cost-effective and environmentally desirable
Solution Approach 1:
The system recovers oil from the engine unit after testing by draining it into a storage tank, filtering it through a filter element, and storing it for reuse. This eliminates the need to dispose of the oil and purchase new oil for subsequent testing, directly addressing the environmental and cost concerns while maintaining ease of delivery.
Solution Approach 2:
The system uses the engine unit's own operating temperature and pressure conditions to facilitate oil drainage and transfer without requiring external heating or complex pumping systems. The oil naturally flows from the engine unit to the storage tank utilizing the existing thermal and pressure differentials.
2Loss of substance
If a filtration system is added to recover and reuse oil, then oil disposal costs are reduced, but the system complexity increases
Solution Approach 1:
The system combines multiple functions into a single integrated unit: the storage tank serves as both the collection vessel for drained oil and the pressurization chamber for refilling; the filter element is integrated directly into the tank structure; and the manual pump serves dual purposes of transferring oil and filtering it. This merging reduces overall system complexity while achieving oil recovery and reuse.
Solution Approach 2:
The system uses pneumatic pressure (from a compressed air source) to automate the refilling process and control valve operations. The pressure regulator and control valves manage the pneumatic system to automatically transfer filtered oil back to the engine unit, reducing manual intervention while maintaining manageable system complexity.
3Device complexity
If manual pumping is used to transfer oil, then the system remains simple and portable, but the transfer speed and productivity are reduced
Solution Approach 1:
The system employs a compressed air-powered diaphragm pump to automate oil transfer between the storage tank and engine unit. This pneumatic mechanism provides rapid, consistent transfer speeds without requiring manual pumping, significantly improving productivity while maintaining system simplicity through the use of a single power source (compressed air) that also drives the control valves.
4Extent of automation
If the system uses external electrical power sources, then automation and control are improved, but portability and simplicity are reduced
Solution Approach 1:
The system replaces electrical motors and control systems with a pneumatic control system powered by compressed air. The air-powered diaphragm pump provides automated pumping action, while pneumatic control valves manage the flow of air and oil. This approach achieves a high degree of automation without requiring electrical power sources, maintaining portability and simplicity while improving control automation.
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 system allows for the reuse of oil, reducing disposal costs and environmental impact, while being self-regulated and portable, with safety features to prevent overpressure and leaks, thus optimizing the handling of engine unit fluids during testing.
Implementation Method 1
a vacuum condition during the drain state
Implementation Method 2
depressurizing a storage tank of the oil storage and filtration system to transfer the oil from the engine unit to the storage tank
Implementation Method 3
a pressurized condition during the fill state
Implementation Method 4
pressurizing the storage tank of the oil storage and filtration system to transfer the oil from the storage tank through a storage tank exhaust line to the engine unit
Data Source
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AI summary
An oil storage and filtration system for an engine unit includes an on/off valve that defines an operating phase when receiving supply air and in an on position and a standby phase when in an off position or not receiving the supply air. The system also includes a fill/drain valve that defines a drain state and a fill state which respectively correspond to emptying and filling oil from/into the engine unit. The system also includes a control valve, a pressure/vacuum valve, and a storage tank. The storage tank stores oil in a pressurized condition during the fill state, a vacuum condition during the drain state, and an atmospheric condition during the standby phase. The also includes a vacuum generator in fluid communication with the storage tank during the drain state and fluidly isolated from the storage tank during the fill state.