Asymmetric Engine Oil Pan Layout for Under-Engine Component Space
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Solution Overview
Problem
Existing engine designs with an oil pan extending across the entire lower portion of the cylinder block hinder effective utilization of the space below the engine, limiting the integration of additional components in flying apparatuses.
Innovation Solution
The engine design includes an oil pan provided only on one side of the engine block, allowing for the placement of electrical components and other components below the engine, with a U-shaped oblique portion enhancing space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the oil pan extends across the entire lower portion of the cylinder block, then the engine structure is simplified and manufacturing is easier, but the space below the engine cannot be effectively utilized
Solution Approach 1:
The oil pan is divided into a first oil pan on the first side and a second oil pan on the second side, with the lower end of the first oil pan extending beyond the lower end of the second oil pan. This segmentation allows the first oil pan to provide additional space for mounting electrical components while the second oil pan maintains the traditional protective function, thus resolving the contradiction between manufacturing simplicity and space utilization.
Solution Approach 2:
The oil pan configuration is made asymmetric by extending the lower end of the first oil pan beyond the lower end of the second oil pan. This asymmetric design creates additional mounting space on the first side for electrical components without requiring a complete redesign of the entire oil pan structure, thereby improving space utilization while maintaining ease of manufacture.
2Volume of moving object
If the oil pan is provided only on one side, then space utilization is improved, but the protective function for the crankshaft is reduced
Solution Approach 1:
The oil pan protection function is segmented between two separate oil pans: the second oil pan provides protection for the crankshaft on the second side, while the first oil pan extends beyond to provide mounting space for electrical components on the first side. This segmentation ensures that the protective function is maintained where needed while creating additional usable space.
Solution Approach 2:
Different regions of the oil pan system are assigned different functions: the second oil pan focuses on protective function for the crankshaft, while the extended portion of the first oil pan focuses on providing mounting space for electrical components. This local differentiation of quality and function resolves the contradiction between protection and space utilization.
3Adaptability or versatility
If additional components are mounted below the engine, then functionality is enhanced, but the engine structure becomes more complex
Solution Approach 1:
The first oil pan is designed to serve multiple functions: it provides the traditional oil containment and protection functions while also serving as a mounting structure for electrical components. This multi-functionality enhances the overall functionality of the engine assembly without requiring separate mounting structures, thereby avoiding increased structural complexity.
Solution Approach 2:
The mounting function for electrical components is merged with the oil pan structure itself. The electrical components are mounted directly on the extended portion of the first oil pan, combining the protective/containment function with the mounting function into a single integrated structure, thus enhancing functionality without adding structural complexity.
Data Source
AI summary
An engine includes pistons, crank shafts to rotate according to reciprocating motions of the pistons, an engine block that accommodates the pistons and the crank shafts, and an oil pan provided below the engine block. Between one-side portion and another-side portion in the width direction of the engine block, the oil pan is provided only at the one-side portion.