Engine Transmission Box Air Inlet Structure for Easy Filter Service
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Solution Overview
Problem
The existing engine transmission box design complicates the cleaning and replacement of the filter member, requiring the removal of the cover from the crankcase, which is cumbersome and difficult to perform.
Innovation Solution
The engine transmission box incorporates an airflow guide hood that covers the air inlet port portion, allowing the filter member to be easily accessed and replaced without removing the entire cover, ensuring the filter member can be cleaned or replaced without disassembling the transmission box.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the filter member is integrated inside the transmission box cover, then the filtering function is effective, but the cleaning and replacement engineering becomes complicated
Solution Approach 1:
The air inlet port portion is segmented from the main cover body, allowing the filter member to be accessed independently. The air inlet port portion can be removed separately to enable filter cleaning or replacement without dismantling the entire cover assembly, thus resolving the contradiction between maintaining filtering reliability and improving maintenance ease.
2Ease of repair
If the cover is removed for filter maintenance, then the filter member can be cleaned or replaced, but the engineering complexity increases
Solution Approach 1:
By dividing the cover into a main body and a separable air inlet port portion, the design allows filter maintenance to be performed by removing only the air inlet port portion rather than the entire cover. This segmentation reduces the number of disassembly steps and lowers engineering complexity while maintaining ease of filter maintenance.
3Reliability
If the filter member is placed inside the transmission box, then the filtering is effective, but the space inside the transmission box is reduced
Solution Approach 1:
The filter member is extracted from the internal transmission box space and positioned in the air inlet port portion. This extraction allows the filter to perform its filtering function effectively while the transmission box interior remains unobstructed, preserving the internal space for other components and maintaining filtering reliability.
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 design simplifies the cleaning and replacement of the filter member by allowing direct access without removing the cover, maintaining the internal space and ensuring effective airflow while preventing large foreign objects from entering.
Implementation Method 1
external cool air enters through the airflow entrance opening to cool the belt continuously variable transmission system
Implementation Method 2
the external air, when entering the cover 1 through the airflow entrance opening 11, is not allowed to directly move into the transmission box for performing cooling and is, instead, first subjected to forced filtering by the filter member 14
Data Source
AI summary
A structure of an engine transmission box is provided. The transmission box includes a transmission box body and a cover arranged on and covering the transmission box body. The transmission box includes at least one airflow entrance opening and an air outlet opening. The cover includes an air inlet port portion, which has an air inlet opening, and a filter member arranged outside of the air inlet opening. An airflow guide hood is arranged to cover the air inlet port portion. The filter member is located between the airflow guide hood and the air inlet port portion. With such an arrangement, a space is guaranteed inside the transmission box, and cleaning or replacement engineering of the filter member is made easy.