Dual-Role Motor Arrangement for Seamless Transmission Gear Changes
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Solution Overview
Problem
Existing electrical motor arrangements face challenges in providing continuous and smooth torque transmission, particularly during gear changes in vehicle transmissions.
Innovation Solution
The electrical motor arrangement alternates between configurations where the first rotational means functions as a stator and a rotor, and the second rotational means functions as a rotor and a stator, allowing for seamless torque transmission through a planetary gearbox by utilizing a first and second torque transmission path, with brake units to manage rotational movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional electrical motor arrangement with a single stator and rotor is used, then the structure is simple, but torque transmission is interrupted during gear changes
Solution Approach 1:
The motor arrangement is segmented into two independent rotational means (first and second), each capable of functioning as either stator or rotor. This segmentation allows one rotational means to maintain torque transmission while the other undergoes gear changes, ensuring continuous operation without interrupting the overall torque flow to the transmission.
Solution Approach 2:
Each rotational means is designed with multi-functionality, capable of operating in dual roles as either stator or rotor depending on the operational phase. This universality enables flexible configuration switching between the two rotational means, allowing the system to maintain torque transmission continuity while adapting to different gear change requirements.
2Adaptability or versatility
If gear changes are implemented in a transmission, then speed ratios are improved, but torque transmission smoothness deteriorates
Solution Approach 1:
The system performs preliminary action by pre-positioning the two rotational means in different operational states before a gear change occurs. One rotational means is prepared to take over torque transmission duties while the other is prepared to undergo gear changes, ensuring a smooth transition without torque interruption or transmission shocks.
Solution Approach 2:
The second rotational means acts as an intermediary during gear changes, maintaining torque transmission continuity while the first rotational means undergoes gear ratio changes. This intermediary role ensures that the transmission system can change speed ratios without compromising torque transmission smoothness.
3Ease of operation
If brake units are added to manage rotational movements, then gear change smoothness is improved, but device complexity increases
Solution Approach 1:
The brake units are integrated into the existing rotational means structure, where each rotational means includes its own brake unit for independent control. This self-service approach allows each rotational means to manage its own braking requirements without requiring external braking systems, reducing overall system complexity while maintaining smooth gear change operation.
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 ensures uninterrupted torque transmission during gear changes, minimizing efficiency losses and extending the product life by avoiding additional mechanical stresses.
Implementation Method 1
the motor arrangement generates a torque by an interaction of the stator and the rotor
Data Source
AI summary
According to an embodiment, it is an electrical motor arrangement comprising a first rotation element for providing a first rotational movement, and a second rotation element for providing a second rotational movement, and wherein in a first configuration the first rotation element is configured as a stator and the second rotation element is configured as a rotor, and wherein in a second configuration the first rotation element is configured as the rotor and the second rotation element is configured as the stator of the electrical motor arrangement, wherein the electrical motor arrangement is configured to operate alternately in the first configuration and the second configuration; wherein at least one of the first rotational movement and the second rotational movement is provided to a transmission arrangement, and wherein the electrical motor arrangement is configured for providing a rotational movement for a transmission of a vehicle.