Torque Converter Drive Unit With Reducer-Integrated Clutch
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Solution Overview
Problem
Existing drive units with a one-way clutch in the torque converter are structurally complex and costly to manufacture.
Innovation Solution
A drive unit configuration that includes an electric motor, torque converter, reducer, first and second shafts, and a clutch, where the clutch is disposed in the reducer to allow or block torque transmission between the shafts, simplifying the structure and manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a one-way clutch is installed in the torque converter to enable efficient torque transmission during reverse rotation, then the drive unit can handle bidirectional rotation, but the structure becomes complicated and manufacturing cost increases
Solution Approach 1:
The one-way clutch is extracted from the torque converter and relocated to the reducer. This separation removes the complexity from the torque converter while maintaining the bidirectional rotation capability through the clutch's operation in the reducer, directly resolving the technical contradiction between adaptability and device complexity.
2Adaptability or versatility
If a one-way clutch is installed in the torque converter to enable efficient torque transmission during reverse rotation, then the drive unit can handle bidirectional rotation, but manufacturing cost increases
Solution Approach 1:
The one-way clutch is extracted from the torque converter and relocated to the reducer. This relocation simplifies the torque converter structure and reduces manufacturing complexity, thereby lowering production costs while preserving the essential bidirectional rotation capability through the clutch's operation in the reducer.
3Power
If torque is transmitted through the torque converter in reverse direction, then torque amplification occurs, but the clutch structure becomes necessary to control rotation direction
Solution Approach 1:
The one-way clutch acts as an intermediary mechanism in the reducer that automatically controls torque transmission based on rotation direction. It allows torque amplification through the torque converter in the forward direction while automatically blocking reverse torque transmission, eliminating the need for complex active control mechanisms.
Solution Approach 2:
The one-way clutch provides self-service by automatically responding to rotation direction changes without external control. It enables torque amplification when needed (forward rotation) and automatically prevents reverse rotation, making the system self-regulating and eliminating complex control systems.
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
The simplified design allows for easy manufacturing and efficient torque transmission in both forward and reverse rotational directions without the need for a complex one-way clutch, reducing production costs.
Implementation Method 1
The torque converter is configured to amplify a torque generated by the electric motor when the torque is directed in a first rotational direction
Data Source
AI summary
A drive unit includes an electric motor, a torque converter, a reducer, a first shaft, a second shaft, and a clutch. The torque converter amplifies a torque generated by the electric motor when the torque is directed in a first rotational direction. The reducer is configured to output the torque by reducing a speed of rotation of the electric motor. The first shaft transmits the torque from the electric motor to the torque converter. The second shaft transmits the torque from the torque converter to the reducer. The clutch is disposed in the interior of the reducer. The clutch allows or blocks transmission of the torque between the first shaft and the second shaft.