Motorcycle Hybrid Adapter Assembly for Compact Drive Integration
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Solution Overview
Problem
Existing motorcycle drive devices lack a compact and versatile solution to integrate hybrid systems comprising internal combustion engines and electric motors, particularly in limited spaces, without requiring complete redesign.
Innovation Solution
A modular drive device with an adapter assembly that aligns perpendicular end faces for an internal combustion engine and electric drive unit, featuring a universal adapter for various combinations, a planetary gear system for torque transmission, and a clutch for speed-dependent torque control, enabling flexible coupling and efficient power transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a hybrid drive system is integrated into motorcycles with limited space, then alternative drive capability is achieved, but device complexity increases
Solution Approach 1:
The adapter assembly is designed as a universal component that can accommodate different electric drive units (motor, generator, starter motor) through a standardized connection geometry. This allows the same adapter to support multiple functions (electric assistance, energy recovery, engine starting) without requiring separate mounting structures for each component type, thereby reducing overall system complexity while maintaining hybrid drive versatility.
2Adaptability or versatility
If existing drive devices are redesigned to accommodate hybrid systems, then hybrid capability is achieved, but manufacturing cost increases
Solution Approach 1:
The drive system is segmented into modular components: the existing internal combustion engine remains unchanged, while the electric drive unit and adapter assembly form a separate, interchangeable module. This segmentation allows manufacturers to produce the adapter assembly as a standardized component that can be added to existing engine platforms, avoiding the need to redesign the entire drive system and thereby reducing manufacturing costs.
Solution Approach 2:
The adapter assembly serves as an intermediary component that bridges the existing internal combustion engine and the new electric drive unit. It provides the necessary mechanical connection and torque transmission without requiring modifications to the engine itself, thus allowing hybrid capability to be added while minimizing redesign costs for the core engine platform.
3Adaptability or versatility
If multiple connection geometries are provided for different electric drive units, then versatility is improved, but device complexity increases
Solution Approach 1:
The adapter assembly incorporates a single, universal connection geometry designed to accommodate different types of electric drive units (motors, generators, starter motors) with varying power and torque characteristics. This standardized interface eliminates the need for multiple specialized connection geometries, thereby maintaining versatility while reducing the complexity of the adapter design and simplifying manufacturing.
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 provides a compact, lightweight, and cost-effective drive device capable of handling a range of electric drive unit outputs, ensuring efficient mechanical power transmission and protection against torque fluctuations, suitable for hybrid motorcycles without extensive redesign.
Implementation Method 1
a planetary gear system for torque transmission
Implementation Method 2
a clutch for speed-dependent torque control
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
Drive device (1) for a motorcycle (2) comprising an internal combustion engine (3) with a first end face (5) and a second end face (6) opposite the first end face (5) and an adapter assembly (4) with a coupling end face (9) and a connection end face (7) opposite the coupling end face (9), wherein the end faces (5, 6, 9, 7) are each aligned perpendicular to axes (10) and shafts (18) of the internal combustion engine (3) and the adapter assembly (4), wherein the adapter assembly (4) is further arranged on the internal combustion engine (3) such that the first end face (5) and the coupling end face (9) are adjacent to each other, wherein the connection end face (7) has a connection geometry (8) for an electric drive unit (11).