Exhaust Gas Purifying Device Vibration Isolation
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Solution Overview
Problem
Conventional exhaust gas purifying devices for diesel engines face challenges such as engine vibration transmission, temperature fluctuations due to cooling fan airflow, and high manufacturing costs associated with design changes in exhaust gas manifold configurations, which affect emission tendencies and increase testing and manufacturing costs.
Innovation Solution
The design incorporates a gas purifying filter with an inner and outer case configuration, featuring an exhaust gas inlet pipe that is adjustable in direction and acts as a reinforcing member, providing a conduction passage to maintain temperature and improve rigidity, thus enhancing purifying performance while reducing manufacturing complexity and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the exhaust gas purifying device is attached to the diesel engine, then the exhaust gas can be purified, but engine vibration is directly transmitted to the device
Solution Approach 1:
The patent introduces a vibration isolator as an intermediary component between the exhaust gas purifying device and the diesel engine. This mediator absorbs and dampens engine vibrations, preventing them from being directly transmitted to the purifying device while allowing the device to remain attached to the engine for exhaust gas purification.
2Temperature
If the cooling wind directly blows against the exhaust gas purifying device, then cooling is provided, but the temperature of the device and exhaust gas decreases
Solution Approach 1:
The patent introduces a heat insulating shield as an intermediary barrier between the cooling fan and the exhaust gas purifying device. This shield blocks the direct path of cooling airflow to the device while still allowing the exhaust gas to be processed, thereby preventing excessive temperature decrease of the purifying device and maintaining optimal exhaust gas temperature.
3Adaptability or versatility
If the design of the exhaust gas manifold is changed to alter attaching direction, then mounting flexibility is improved, but manufacturing cost and testing requirements increase
Solution Approach 1:
The patent makes the exhaust gas manifold design dynamic and adjustable rather than fixed. The manifold is designed with detachable connections and adjustable positioning mechanisms, allowing it to be reconfigured for different attaching directions without requiring complete redesign of the casting mold. This enables mounting flexibility while avoiding the high costs associated with mold redesign and extensive testing.
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 stabilizes the exhaust gas purifying device, maintains high purifying performance, reduces manufacturing costs, and allows for flexible installation without altering the device's structure, thereby minimizing testing and shipping complexities.
Implementation Method 1
an exhaust gas outlet of the exhaust gas inlet pipe is connected to the exhaust gas inflow port
Implementation Method 2
a gas purifying filter for purifying an exhaust gas exhausted from an engine
Implementation Method 3
a diesel particulate filter (or an NOx catalyst) or the like is provided as an exhaust gas purifying device
Data Source
AI summary
A general purpose property of an exhaust gas purifying device for mounting is improved by increasing the attaching pattern of an exhaust gas purifying device, in the case that the exhaust gas purifying device is attached to a diesel engine. An exhaust gas purifying device is provided with gas purifying filters purifying an exhaust gas discharged from a diesel engine, inner cases internally provided with the gas purifying filters, and outer cases internally provided with the inner cases. An exhaust gas inlet pipe having an exhaust gas inlet side is provided in the midstream portion in a longitudinal direction of the outer case. An exhaust gas inflow port is provided in one end side in a longitudinal direction of the catalyst outer case. An exhaust gas outlet side of the exhaust gas inlet pipe is structured such as to be connected to the exhaust gas inflow port of the catalyst outer case.