Engine ATD Support Bracket Layout for Compact Exhaust Mounting
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Solution Overview
Problem
Existing engine configurations require separate space for exhaust gas purification devices, complicating the engine structure and necessitating complex mounting structures.
Innovation Solution
An engine design with a support base and dual support brackets on opposite sides of the engine body, allowing easy mounting and stable positioning of the exhaust gas purification device without additional jigs, utilizing a common support base for multiple specifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the exhaust gas purification device is disposed separately from the engine, then the device can be supported above a hydraulic pump by a support member, but a space for arranging the engine and the exhaust gas purification device is required
Solution Approach 1:
The exhaust gas purification device is merged with the engine by disposing it above the engine body and supporting it directly on the engine. This integration eliminates the need for separate support structures on hydraulic pumps and reduces the overall space required in the engine room.
2Area of stationary object
If the exhaust gas purification device is arranged on the upper side of the engine and supported on the engine, then space is saved, but the structure of the engine body becomes complicated
Solution Approach 1:
The support structure is segmented into separate support brackets that are attached to the engine body, rather than modifying the engine body structure itself. This allows the exhaust gas purification device to be supported above the engine with minimal modification to the engine body, maintaining structural simplicity while achieving space savings.
3Manufacturing precision
If a support structure is designed to support the exhaust gas purification device above the engine, then mounting is possible, but a jig or position determination tool is needed for accurate positioning
Solution Approach 1:
Positioning holes are pre-formed at the correct positions on the support brackets and engine body during manufacturing. This preliminary action eliminates the need for jigs or position determination tools during assembly, as the components can be directly aligned and fastened using the pre-positioned holes, simplifying the mounting process while maintaining precision.
4Device complexity
If the support base is mounted without vertically-mounted part and horizontally-mounted part on separate brackets, then assembly is simpler, but the position of the support base cannot be accurately determined
Solution Approach 1:
The support brackets are designed with asymmetric mounting configurations: the first support bracket has vertically-oriented positioning holes for vertical positioning, while the second support bracket has horizontally-oriented positioning holes for horizontal positioning. This asymmetric design enables accurate three-dimensional positioning of the support base without requiring complex symmetric structures or additional positioning mechanisms.
Data Source
AI summary
An engine has an ATD that purifies exhaust gas. The engine is provided with an engine body, a support base, a front-side support bracket, and a rear-side support bracket. The support base supports an exhaust gas purification device. The front-side support bracket is mounted to the engine body and is disposed on one side of the engine body, and supports the support base. The rear-side support bracket is mounted to the engine body and is disposed on a side opposite to the front-side support bracket with the engine body therebetween, and supports the support base. The front-side support bracket has a vertically-mounted boss mounted in the vertical direction with respect to the support base. The rear-side support bracket has a horizontally-mounted boss mounted in the horizontal direction with respect to the support base.