Oil Filter Drainage Conduits for Spill-Free Engine Service
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Solution Overview
Problem
Oil lubrication systems for internal combustion engines face challenges in minimizing oil leakage and spillage when replacing oil filters, as residual oil often spills and requires cumbersome cleanup or separate catch pans.
Innovation Solution
An oil drainage system with first and second drainage conduits in the oil pan, fluidly coupled to form a common discharge conduit, collects and returns residual oil to the oil reservoir, eliminating the need for separate catch pans and excessive cleanup, and includes a flow control device to manage drainage flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If residual oil is not drained before filter replacement, then the filter can be removed quickly, but oil spillage and leakage occur requiring separate catch pans and cleanup
Solution Approach 1:
The drainage system performs preliminary action by automatically draining residual oil from the filter housing and mounting surfaces before the filter is removed. The conduits are positioned to collect oil that would otherwise spill during filter replacement, and the flow control device allows the system to be activated prior to filter removal to prevent spillage.
2Object-generated harmful factors
If a separate catch pan is used to collect residual oil, then oil spillage is contained, but the system becomes more complex and requires additional equipment
Solution Approach 1:
The drainage system merges the oil collection function with the existing oil pan structure. The first and second drainage conduits are integrated into the oil pan, and the collected oil is returned to the oil reservoir through the existing oil fill connection, eliminating the need for separate catch pans and external collection systems.
Solution Approach 2:
The system performs self-service by using the existing oil pan and oil fill connection to collect and return drained oil to the reservoir. The flow control device allows the system to automatically manage its own operation without requiring external catch pans or additional equipment.
3Object-generated harmful factors
If drainage conduits are added to the oil pan, then residual oil is collected and spillage reduced, but the manufacturing complexity increases
Solution Approach 1:
The drainage system is segmented into distinct functional components: first drainage conduit for collecting oil from the filter housing, second drainage conduit for collecting oil from mounting surfaces, flow control device for managing flow, and return path through the oil fill connection. This segmentation allows each component to be designed and manufactured independently and then assembled into the oil pan.
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 effectively reduces or eliminates oil spillage during filter replacement, allowing for clean oil filter replacement and easy cleanup, with the design applicable to various engine types and sizes, including small engines and automotive engines.
Implementation Method 1
residual oil accumulated in portions of the normal oil inlet and outlet flow conduits around the oil filter is first collected and returned to the oil reservoir
Data Source
AI summary
A residual oil drainage system for use in replacement of the oil filter of an internal combustion engine is disclosed. The drainage system may include first and second drainage conduits disposed in the oil pan of the engine. The drainage conduits may be fluidly interconnected and coupled to portions of the oil inlet and outlet flow conduits which normally convey oil to and from the oil filter. A flow control device is movable to either open or close the drainage flowpath in the system. In use with an open flowpath and engine off, residual oil captured by the first and second drainage conduits flows through the drainage system and is returned to the oil reservoir in the oil pan via gravity. In one configuration, the drainage conduits are formed internally and directly within the body of the structure of the oil pan.