Motorcycle Clutch Cover Mounted Control Device
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Solution Overview
Problem
Existing motorcycle power units face difficulties in maintaining the clutch control device due to its location, requiring seat removal and increasing weight and reducing oil-pressure transmission efficiency.
Innovation Solution
A motorcycle power unit design with a clutch control device and oil passages mounted on the clutch cover, allowing for easy maintenance and reduced weight by shortening oil passage length, and incorporating a twin-clutch system with individual control means and an oil filter for efficient oil pressure management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the clutch control device is arranged in a space surrounded by seat rails, then the clutch control device can be positioned away from the clutch device, but maintenance of the clutch control device requires removal of the rider's seat and the pipe connecting them becomes elongated
Solution Approach 1:
The clutch cover is designed as a detachable component that can be separated from the engine body. The clutch control device is mounted on the clutch cover, creating a modular assembly that can be removed as a unit for maintenance without requiring seat removal, thus resolving the contradiction between positioning flexibility and maintenance accessibility.
Solution Approach 2:
The clutch control device and oil passages are extracted from the internal engine structure and mounted on the externally accessible clutch cover. This extraction allows the clutch control device to be positioned away from the clutch device while maintaining easy accessibility for maintenance through clutch cover removal.
2Ease of operation
If the pipe connecting the clutch device and clutch control device is elongated, then the clutch control device can be positioned away from the clutch device, but the weight of the motorcycle increases and oil-pressure transmission efficiency is reduced
Solution Approach 1:
The clutch control device and oil passages are merged into a single integrated assembly mounted on the clutch cover. This combination eliminates the need for separate, elongated connecting pipes between the clutch control device and clutch device, reducing overall weight while maintaining positioning flexibility through clutch cover detachment.
Solution Approach 2:
The clutch cover serves as an intermediary mounting platform that positions the clutch control device away from the clutch device without requiring long connecting pipes. The oil passages are integrated into the clutch cover structure, providing efficient oil pressure transmission with minimal length.
3Ease of operation
If the pipe connecting the clutch device and clutch control device is elongated, then the clutch control device can be positioned away from the clutch device, but the transmission efficiency of oil pressure is lowered
Solution Approach 1:
The oil passages are merged into the clutch cover structure itself rather than being separate external pipes. This integration minimizes the length and number of oil passages connecting the clutch control device to the clutch device, ensuring high oil-pressure transmission efficiency while allowing positioning flexibility through clutch cover removal.
4Ease of repair
If the clutch control device is mounted on the clutch cover, then maintenance becomes easy through clutch cover removal, but the clutch cover structure becomes more complex
Solution Approach 1:
The clutch cover is designed to serve multiple functions: it protects the clutch device, provides a mounting platform for the clutch control device, and incorporates integrated oil passages. This multi-functionality justifies the increased structural complexity by eliminating the need for separate components and simplifying maintenance procedures.
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
Facilitates easy maintenance of the clutch control device and enhances oil-pressure transmission efficiency while preventing weight increase, allowing for improved maintenance and operational performance.
Implementation Method 1
Oil passages which connect the clutch control device and the clutch device with each other are mounted on the clutch cover
Implementation Method 2
an oil filter which is arranged between the clutch control device and an oil pump is arranged on the clutch cover in a detachable manner from the outside
Implementation Method 3
The second branched oil passage in the middle of which a pressure-reducing valve mounted on the clutch cover is put is connected to another oil-pressure control device
Data Source
AI summary
In a motorcycle-use power unit in which a clutch device arranged in a power transmission path between a crankshaft and a drive wheel is housed in a clutch chamber which is defined between a crankcase and a clutch cover joined to a side surface of the crankcase, the maintenance of the clutch control device can be easily performed while preventing a lowering of oil-pressure transmission efficiency between the clutch device and the clutch control device and preventing an increase in the weight of the motorcycle. A clutch control device performs a changeover of engagement and disengagement of a clutch device by controlling the oil pressure applied to the clutch device. Oil passages for connecting the clutch control device and the clutch device with each other are mounted on a clutch cover.