Engine Exhaust Purification Mounting for Lower Center of Gravity
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Solution Overview
Problem
The existing engine devices with exhaust gas purification systems, such as diesel engines, face challenges in reducing oscillation and improving mounting properties due to the high center of gravity caused by heavy exhaust gas purification devices, which restricts vehicle body structure and versatility.
Innovation Solution
The engine device features an exhaust gas purification system firmly fixed to a support base with a staircase patterned exhaust and support base connection, allowing for a lower center of gravity, reduced oscillation, and improved mounting flexibility by arranging the DPF and SCR cases side by side on the support base and integrating an EGR cooler and supercharger for compact installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the exhaust gas purification device is installed on the upper surface side of the engine, then the exhaust gas purification function is achieved, but the center of gravity of the engine becomes high causing oscillation and restricting vehicle body structure
Solution Approach 1:
The patent transitions from a conventional upper-surface mounting arrangement to a side-surface mounting arrangement of the exhaust gas purification device. By changing the spatial dimension from vertical (upper surface) to lateral (side surface), the center of gravity is lowered while maintaining the exhaust gas purification function through proper connection of exhaust channels.
2Reliability
If the exhaust gas purification device is installed on the upper surface side, then purification is achieved, but the total height of the engine increases
Solution Approach 1:
The patent redistributes the spatial arrangement by mounting the exhaust gas purification device on the side surface rather than the upper surface. This dimensional change redirects the device placement from the vertical dimension to the lateral dimension, reducing total height while preserving purification functionality through appropriate exhaust gas channel connections.
3Reliability
If support mechanism is added to mount exhaust gas purification device on upper surface, then purification function is achieved, but attachment position becomes restricted
Solution Approach 1:
The patent eliminates the need for complex support mechanisms by mounting the exhaust gas purification device directly on the side surface of the engine. This dimensional change from vertical mounting to lateral mounting simplifies the attachment structure and provides greater flexibility in selecting attachment positions, thereby improving adaptability for different vehicle configurations.
Data Source
AI summary
In the engine device having an exhaust gas purification device which removes particulate matters in exhaust gas of the engine or nitrogen oxides in the exhaust gas of the engine, the exhaust gas purification device is firmly fixed to a support base, and an exhaust gas outlet pipe of the engine is provided with an exhaust connection portion which connects an exhaust gas inlet of the exhaust gas purification device, and a support base connection portion which connects the support base.