Motorcycle Brake Layout for Slip Control Without Long Fluid Pipes
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Solution Overview
Problem
Conventional motorcycle brake systems face challenges in providing sufficient space for brake fluid pipes due to the compact size of motorcycles, impacting the mountability and safety of slip control operations.
Innovation Solution
A brake system for motorcycles that integrates a master cylinder with a hydraulic pressure adjustment mechanism for the front wheel and an actuator for the rear wheel, allowing for slip control operations without the need for extensive fluid pipes, utilizing sensors and actuators to adjust friction forces based on hydraulic pressure and operational inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional brake system with master cylinder and wheel cylinder connected by brake fluid pipe is used, then slip control operation can be performed, but the motorcycle body size becomes too large to provide space for the brake fluid pipe
Solution Approach 1:
The patent replaces the hydraulic mechanical connection (brake fluid pipe) with an electronic control system. The master cylinder is replaced by a sensor that detects operation element motion, and the wheel cylinders are controlled by actuators that receive electronic signals from a controller, eliminating the need for brake fluid pipes while maintaining slip control capability
Solution Approach 2:
The patent extracts and removes the brake fluid pipe from the system. By separating the master cylinder from the wheel cylinders and controlling them independently through electronic signals, the patent eliminates the physical connection requirement, thereby solving the space constraint problem in compact motorcycles
2Ease of manufacture
If brake fluid pipe is disposed in the compact motorcycle, then front and rear wheel braking can be achieved, but the work space for pipe installation and routing becomes insufficient
Solution Approach 1:
The patent substitutes the mechanical brake fluid pipe system with an electronic control architecture. Sensors detect operation element motion and transmit electronic signals to actuators that control the wheel cylinders, eliminating the need for physical pipe routing and associated installation challenges in compact spaces
Solution Approach 2:
The patent segments the brake system into independent modules: operation element sensors, controller, and wheel cylinder actuators. This segmentation allows each component to be positioned independently without requiring continuous physical connection through brake fluid pipes, facilitating installation in limited spaces
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
Enhances mountability and safety by suppressing wheel slip with responsive hydraulic pressure control, ensuring effective slip control without the need for additional space-consuming fluid pipes.
Implementation Method 1
a hydraulic pressure adjustment mechanism that adjusts a hydraulic pressure of the brake fluid in the wheel cylinder
Implementation Method 2
a wheel cylinder that communicates with the master cylinder via a fluid path filled with a brake fluid
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The present invention has a purpose of improving mountability of a brake system capable of performing slip control operation of a front wheel and a rear wheel to a motorcycle. The present invention further has a purpose of obtaining a motorcycle that includes such a brake system. In a front-wheel braking section (20), a friction force, which is applied to a front wheel (3) by a first friction application device (21), varies according to a hydraulic pressure of a brake fluid in a master cylinder (22) during service braking and varies by control of a hydraulic pressure adjustment mechanism (32, 33, 36, and the like) by a controller (60) during the slip control operation. In a rear-wheel braking section (40), a friction force, which is applied to a rear wheel (4) by a second friction application device (50), varies by control of an actuator (41) by the controller (60) during the service braking and during the slip control operation.