Brake Caliper with Sealed Fluid Chamber for Rapid Electronic Control
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Solution Overview
Problem
Current brake systems for vehicles face challenges in quick and precise control due to hydraulic delays and complexities, leading to reduced braking power, increased production costs, and maintenance difficulties, especially in systems without G-sensors and with front and rear wheel linkage.
Innovation Solution
A brake caliper design that seals brake fluid within a cylinder body and uses internal volume changing means, such as linear actuators or rotary actuators, to control pressure independently for each wheel, eliminating the need for external hydraulic piping and allowing direct electronic control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If brake fluid pressure is transmitted through hydraulic ducts and tubes in conventional ABS actuators, then braking force can be controlled for multiple wheels, but expansion of the hydraulic duct and tube causes delay in operation making quick control difficult
Solution Approach 1:
The brake system is divided into independent brake caliper units, each with its own sealed brake fluid chamber and actuator. Each wheel brake caliper operates independently with its own storage section and piston, eliminating the need for interconnected hydraulic ducts between wheels. This segmentation allows each wheel to respond immediately to control signals without waiting for hydraulic pressure propagation through ducts.
Solution Approach 2:
The hydraulic duct and tube transmission system is completely removed from the brake control path. Instead of transmitting brake fluid pressure through external hydraulic ducts from a central ABS actuator, the brake fluid is contained within sealed chambers in each brake caliper, and pressure control is achieved by directly actuating the piston within each caliper using electric motors or other drive mechanisms.
2Loss of time
If conventional ABS actuators use centralized brake fluid pumping, then fluid pressure can be controlled, but delay and delay of operation occurs due to hydraulic transmission
Solution Approach 1:
The centralized mechanical hydraulic pumping system is replaced with distributed electric actuators. Each brake caliper is equipped with its own electric motor or actuator that directly drives the piston, converting electrical control signals into mechanical motion without requiring hydraulic pressure transmission. This substitution eliminates the time delay associated with hydraulic fluid transmission through ducts.
3Ease of manufacture
If hydraulic piping and tubes are used to transmit brake fluid pressure, then braking control can be achieved, but configuration becomes complicated and maintenance becomes difficult
Solution Approach 1:
The brake system is segmented into independent modular units, with each brake caliper containing its own sealed brake fluid chamber, piston, and actuator. This modular design eliminates the need for complex interconnected hydraulic piping, simplifying both the overall configuration and maintenance procedures. Each module can be independently serviced or replaced without affecting other wheels.
Solution Approach 2:
The external hydraulic piping system is completely extracted and removed. The brake fluid is contained entirely within sealed chambers in each brake caliper, with no external ducts or tubes connecting different wheels. This eliminates the complexity of hydraulic routing and the maintenance issues associated with leak-prone connections and flexible hoses.
4Adaptability or versatility
If centralized hydraulic control is used in brake systems, then vehicle deceleration and stability control can be achieved, but production costs increase due to increased control equipment
Solution Approach 1:
Each independent brake caliper unit serves multiple functions: it provides braking force generation, contains the brake fluid reservoir, houses the actuator mechanism, and implements control logic locally. This multi-functionality eliminates the need for separate centralized control equipment, reducing the total number of components and production costs while maintaining full vehicle deceleration and stability control capabilities through coordinated operation of all wheels.
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 design enables more reliable, rapid, and precise control of braking forces, simplifies configuration, and reduces maintenance, while eliminating hydraulic delays and complexities, improving vehicle stability and safety.
Implementation Method 1
a cylinder in which a piston pressing a brake pad on the disc side is displaceably stored... internal volume changing means for changing the internal volume of the storage section into and out of the storage section
Data Source
Figure 1
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AI summary
More reliable control, simpler configuration and easier maintenance. A cylinder in which a piston that presses a brake pad toward the disc is stored displaceably, and a cylinder body having a hollow storage portion of a predetermined inner volume communicating with the cylinder, and brake fluid filled in cylinder and housing, and internal volume changing means for changing the internal volume of the storage unit into and out of the storage unit, and drive means for electrically driving the internal volume change means to enter and exit the storage unit The brake fluid is sealed by the cylinder body, piston and internal volume changing means, and is isolated from the outside.