Motorcycle Brake System with Electric Motor Generator Braking
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Solution Overview
Problem
Conventional motorcycle braking systems require hydraulic brake components on all wheels, leading to increased costs, installation space, and assembly effort, as well as weight and complexity.
Innovation Solution
A braking system that eliminates the need for a hydraulic brake cylinder on wheels braked by an electric motor, using generator operation for braking, allowing for a lighter, more compact, and cost-effective design with multifunctional electric motors that can also drive wheels, and incorporating a control device to manage hydraulic and generator braking torques for enhanced efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hydraulic brake cylinders are installed on all wheels, then reliable braking is achieved, but costs, installation space, assembly effort, weight, and device complexity increase
Solution Approach 1:
The patent removes hydraulic brake cylinders from wheels that are braked by the electric motor in generator mode. Only the necessary hydraulic brake components are retained on wheels that require hydraulic braking, thereby reducing overall system complexity while maintaining braking reliability through the combination of generator braking and selective hydraulic braking.
Solution Approach 2:
The electric motor serves dual functions: as a drive motor for accelerating the vehicle and as a generator for braking wheels. This multi-functionality eliminates the need for separate hydraulic brake cylinders on wheels where the electric motor provides sufficient braking capability, reducing device complexity while maintaining reliability.
2Reliability
If hydraulic brake cylinders are installed on all wheels, then complete braking coverage is achieved, but weight and installation space increase
Solution Approach 1:
Hydraulic brake cylinders are extracted from the system on wheels that are braked by the electric motor in generator mode. This removal reduces the overall weight of the brake system while maintaining complete braking coverage through the combination of generator braking on some wheels and hydraulic braking on others.
3Reliability
If hydraulic brake components are used on all wheels, then consistent braking performance is achieved, but costs and manufacturing complexity increase
Solution Approach 1:
Hydraulic brake components are removed from wheels braked by the electric motor, simplifying the manufacturing process. The brake system can be assembled from standard hydraulic brake components on wheels that need them, while wheels with electric motor braking require no additional brake components, thereby improving ease of manufacture while maintaining consistent braking performance through the hybrid approach.
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 costs, weight, and installation space while increasing design freedom and recuperation efficiency, making the braking system more environmentally friendly and user-friendly, with improved safety and quick installation.
Implementation Method 1
an electric motor (22) which is assigned to at least one second wheel (24) in such a way that the at least one second wheel (24) can be braked without a wheel brake cylinder arranged thereon due to generator operation of the electric motor (22)
Implementation Method 2
a hydraulic braking device (10) with at least one first wheel brake cylinder (14), which is assigned to at least one first wheel (20) and is hydraulically connected to at least one first master brake cylinder (12)
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to a brake system for a motorcycle, comprising a hydraulic braking device (10) having at least one first master brake cylinder (12) and at least one first wheel brake cylinder (14), which is or can be hydraulically connected to the first master brake cylinder (12) at least by means of a first brake circuit (18) and can be associated with at least one first wheel (20) in such a way that the at least one first wheel (20) can be braked by means of the at least one first wheel brake cylinder (14), and an electric motor (22), which can be associated with at least one second wheel (24) in such a way that at least the second wheel (24) can be braked by means of the electric motor (22), wherein the electric motor (22) can be associated with at least one wheel (24) free of a wheel brake cylinder as the at least one second wheel (24). The invention further relates to a method for installing a brake system on a motorcycle. The invention further relates to a method for braking a motorcycle.