Engine Passageway Design for Oil Leakage Reduction
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Solution Overview
Problem
Existing engine lubrication systems face challenges in effectively reducing oil leakage, which can lead to contamination and fire hazards due to the limitations of current methods in collecting and redirecting escaped oil.
Innovation Solution
An engine assembly design featuring a passageway defined by recesses on the cylinder head and camshaft cover surfaces next to a seal, with openings for collecting and redirecting leaked oil to a predetermined position, often a lower temperature area, and incorporating a second seal and check valve to prevent air flow and enhance oil collection, along with an oil leakage sensor for early detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a seal is used to prevent oil leakage, then oil containment is improved, but oil leakage still occurs when the seal fails
Solution Approach 1:
The passageway acts as an intermediary structure between the sealed area and the engine exterior. When oil leaks through the seal, the passageway intercepts and redirects the oil flow away from critical engine components, preventing direct contamination while maintaining the simplicity of the seal design.
Solution Approach 2:
The invention extracts the harmful function of leaked oil by providing a dedicated passageway that separates and removes oil from areas where it would cause damage. The passageway creates an isolated channel that captures and redirects oil away from sensitive components, effectively removing the harmful effect of seal failure.
2Object-affected harmful factors
If oil is allowed to leak and be collected, then fire hazard is reduced, but engine operation is retarded
Solution Approach 1:
The passageway converts the harmful effect of oil leakage into a beneficial outcome by directing leaked oil away from high-temperature areas and exhaust components. Instead of allowing oil to accumulate in dangerous positions where it could ignite, the passageway channels it to safe collection areas, transforming a potential fire hazard into a controlled containment scenario.
3Object-affected harmful factors
If a passageway is added to redirect oil, then oil leakage control is improved, but device complexity increases
Solution Approach 1:
The passageway is merged with the existing engine assembly structure, integrating the oil redirection function into the cylinder head and camshaft cover components. Rather than adding a separate, independent oil redirection system, the passageway utilizes the existing structural interfaces and surfaces, combining multiple functions into unified components.
Solution Approach 2:
The passageway is implemented as a localized feature within specific engine components rather than a system-wide modification. The recesses and channels are created only in the areas where oil leakage occurs, providing targeted oil redirection without modifying the entire engine structure. This localized approach minimizes the impact on overall device complexity.
Data Source
AI summary
In one aspect, the present invention provides an engine assembly, which includes at least one cylinder head including a first surface, and at least one camshaft cover including a second surface, the first and second surfaces together defining a passageway positioned next to a seal for reducing oil leakage. The passageway may be defined by a recess on at least one of the first and second surfaces.