Dual-Mass Flywheel Hybrid Disconnect Clutch Integration
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Solution Overview
Problem
Existing hybrid drive trains require significant space and production effort for clutch devices, and there is a need for a solution that allows for quick connection and disconnection of an internal combustion engine to the drive train while minimizing installation space.
Innovation Solution
Integration of a hybrid disconnect clutch with a multi-plate clutch and leaf spring arrangement into the dual-mass flywheel, where the leaf springs transmit torque and tension the clutch, reducing the space required and enabling efficient coupling and decoupling of the engine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a clutch device is integrated into the dual-mass flywheel, then the space required for the clutch device is reduced, but the structural complexity of the dual-mass flywheel increases
Solution Approach 1:
The clutch device is integrated into the output part of the dual-mass flywheel, combining two previously separate components into one unified structure. The clutch input side is connected to the output part, and the clutch output side connects to the transmission input shaft, eliminating the need for a separate clutch housing and reducing overall space requirements.
Solution Approach 2:
The output part of the dual-mass flywheel serves multiple functions: it acts as the clutch input side, provides the clutch mounting structure, and transmits torque to the transmission. This multi-functionality reduces the number of separate components needed and simplifies the overall drivetrain architecture.
2Power
If a hybrid disconnect clutch with multi-plate clutch and leaf spring arrangement is used, then the transmission of engine torque is improved, but the manufacturing complexity increases
Solution Approach 1:
The clutch device is divided into multiple friction plates and pressure plates that can be assembled in a modular fashion. The leaf spring arrangement is segmented into multiple springs distributed around the clutch assembly, allowing for easier manufacturing and assembly of individual components rather than requiring complex monolithic structures.
Solution Approach 2:
The leaf springs automatically tension the clutch plates and maintain contact pressure between friction surfaces during operation. This self-tensing mechanism eliminates the need for additional actuators or complex spring adjustment mechanisms, simplifying manufacturing while maintaining effective torque transmission.
3Productivity
If the clutch device is integrated into the output part, then the production effort is reduced, but the reliability of torque transmission may be affected
Solution Approach 1:
The integration of the clutch device into the output part creates a more compact assembly with fewer connection points and potential failure modes. The unified structure reduces the number of external fasteners and mounting interfaces, thereby improving reliability while simplifying production.
Solution Approach 2:
The leaf springs are pre-tensioned during assembly to ensure proper contact pressure between friction plates before the clutch begins operation. This preliminary tensioning ensures reliable torque transmission from the start and maintains consistent performance throughout the clutch's operational life.
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 solution reduces the space and production effort for the clutch device, allowing for rapid and reliable transmission of engine torque during traction while minimizing space, and efficient disengagement during overrun modes.
Implementation Method 1
a spring-damper device effective between the input part and the output part
Implementation Method 2
a leaf spring arrangement (252) integrated into the output part (206), wherein the leaf spring arrangement (252) transmits the torque from the input side (232) to the output side (234)
Implementation Method 3
at least one first friction partner and at least one second friction partner, the first friction partner being connected to the input side in a torque-locking manner and the second friction partner is connected to the output side in a torque-locking manner, the first and the second friction partner can be brought into frictional engagement by means of a contact pressure force
Data Source
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AI summary
The invention relates to a torsional vibration damper (200), especially a dual mass flywheel, comprising an input part (204) and an output part (206) with a common axis of rotation (210), about which the input part (204) and the output part (206) can be rotated together and twisted in a limited manner in relation to each other, and a spring-absorber device (212) that acts between the input part (204) and the output part (206), wherein the output part (206) comprises a coupling device (202) with an input side (232) and an output side (234), which can be moved between an open actuating position and a closed actuating position, the coupling device (202) transmitting a torque from the input side (232) to the output side (234) in the closed actuating position, and the output side (234) of the coupling device (202) comprising a spring arrangement (252) which, in the closed actuating position of the coupling device (202), transmits the torque from a first component (246) of the output side (234) to a second component (262) of the output side (234). The invention also relates to a hybrid drive train (100) with an internal combustion engine (106) and an electric machine (108), the hybrid drive train (100) comprising such a torsional vibration damper (200).