Exhaust Gas Purification Case Mounting Structure
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Solution Overview
Problem
Existing engine devices face challenges in simplifying the structure of the engine room due to the need for space to accommodate exhaust gas purification devices, which restricts engine layout and complicates support structures, especially when these devices are mounted separately from the engine.
Innovation Solution
The engine device integrates an exhaust gas purification case with a main machine frame that includes a bottom support member and side support members for attaching the purification case, ensuring easy assembly and support, while maintaining exhaust gas temperature and preventing mechanical damage, with an operation display and controller system for regeneration control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the exhaust gas purification device is mounted on the engine, then the structure is compact, but the layout of the engine with respect to the main machine is restricted and the engine room structure cannot be simplified
Solution Approach 1:
The exhaust gas purification device is extracted from the engine assembly and disposed separately in the engine room. The device includes a purification case with inlet and outlet ports that connect to the engine exhaust system through ducts, allowing the purification function to be separated from the engine while maintaining functional integration.
Solution Approach 2:
Ducts serve as intermediary components connecting the engine exhaust outlet to the exhaust gas purification device inlet, and another duct connects the purification device outlet to the engine intake. This intermediary connection allows spatial separation while maintaining functional continuity.
2Adaptability or versatility
If the exhaust gas purification device is disposed separately from the engine, then the engine layout restriction is relieved, but the support structure cannot be simplified and control equipment must be added
Solution Approach 1:
The exhaust gas purification device is merged with the engine room structure by disposing it within the engine room space. The device utilizes the existing engine room framework and integrates with the engine mounting structure, combining the purification function with the engine compartment rather than requiring a separate support structure.
3Adaptability or versatility
If the exhaust gas purification device is disposed separately, then engine layout is flexible, but temperature drop of exhaust gas must be prevented
Solution Approach 1:
The exhaust gas purification device is positioned in the engine room close to the engine exhaust outlet, and ducts are designed to minimize the path length. This preliminary positioning ensures that exhaust gas temperature is maintained before reaching the purification device, preventing temperature drop that would reduce purification efficiency.
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
This configuration simplifies the assembly and support of the exhaust gas purification case, maintains effective exhaust gas purification, and enhances the durability of the engine controller by preventing overheating, allowing for efficient regeneration control and improved operational reliability.
Implementation Method 1
by using an oxidation catalyst, a soot filter, or the like of the exhaust gas purification device
Data Source
AI summary
Provided is an engine device that facilitates fastening between a main machine frame (140) and a side surface of an exhaust gas purification case (38) so that workability of mounting the exhaust gas purification ease (38) can be easily improved. The engine device is provided with the exhaust gas purification case (38) for processing exhaust gas from an engine (1), and the exhaust gas purification ease (38) is disposed on a main machine (120) side on which the engine (1) is mounted. The engine device is provided with the main machine frame (140) on which the engine (1) and the like are mounted. The main machine frame (140) is provided with a bottom support member (141) for supporting the exhaust gas purification case (38) and side support devices (143, 144) for fastening and fixing the exhaust gas purification case (38) to the main machine frame (140) in an attachable and detachable manner.