Electromagnetic Transmission Brake System
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Solution Overview
Problem
Hybrid electric vehicle transmission systems face inefficiencies due to complex operation mechanisms and weight increases in hydraulic brake systems, leading to reduced fuel efficiency and increased power loss.
Innovation Solution
An electronic brake system utilizing an electromagnet fixed at the rear cover of the transmission to control the motor/generator power, simplifying the brake mechanism by eliminating hydraulic components and enhancing fuel efficiency through electromagnetic force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hydraulic brake system is used in the transmission, then the brake can control motor/generator power, but the system complexity and weight increase due to electronic oil pump and valve body
Solution Approach 1:
The patent replaces the hydraulic brake system with an electromagnetic brake system. The electromagnetic brake uses an electromagnet to directly generate braking force on the brake disk, eliminating the need for hydraulic components such as electronic oil pumps and valve bodies. This substitution of mechanical/hydraulic system with an electromagnetic system reduces structural complexity while maintaining brake control capability.
Solution Approach 2:
The patent extracts and removes the hydraulic components (electronic oil pump, valve body) from the brake system, retaining only the essential braking function through the electromagnet and brake disk assembly. This extraction of unnecessary complex components simplifies the overall system structure.
2Reliability
If a hydraulic brake system is used in the transmission, then the brake can control motor/generator power, but the weight increases due to additional components
Solution Approach 1:
The patent extracts and removes the heavy hydraulic components (electronic oil pump, valve body, hydraulic lines) from the brake system, retaining only the essential braking function through the electromagnet and brake disk assembly. This extraction of unnecessary heavy components significantly reduces the overall brake system weight.
Solution Approach 2:
The patent replaces the hydraulic brake system with an electromagnetic brake system. The electromagnetic brake uses an electromagnet to directly generate braking force on the brake disk, eliminating the need for hydraulic components such as electronic oil pumps and valve bodies. This substitution of mechanical/hydraulic system with an electromagnetic system reduces structural complexity while maintaining brake control capability.
3Reliability
If a hydraulic brake system is used in the transmission, then the brake can control motor/generator power, but fuel efficiency deteriorates due to weight and size increase
Solution Approach 1:
The patent extracts and removes the heavy hydraulic components (electronic oil pump, valve body, hydraulic lines) from the brake system, retaining only the essential braking function through the electromagnet and brake disk assembly. This extraction of unnecessary heavy components significantly reduces the overall brake system weight.
Solution Approach 2:
The patent replaces the hydraulic brake system with an electromagnetic brake system. The electromagnetic brake uses an electromagnet to directly generate braking force on the brake disk, eliminating the need for hydraulic components such as electronic oil pumps and valve bodies. This substitution of mechanical/hydraulic system with an electromagnetic system reduces structural complexity while maintaining brake control capability.
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 electronic brake system reduces components and weight, improves fuel efficiency, and minimizes drag loss by using electromagnetic force to control the motor/generator power, while effectively cooling friction members with shaft lubrication oil.
Implementation Method 1
An electromagnet is disposed inside of the electromagnet housing. A piston is disposed according to the inside surface of the electromagnet housing, connected with a plunger being introduced along the support end of the rear cover, and operating by electromagnetic force of the electromagnet
Implementation Method 2
A disk unit is provided in which a plurality of the inner disks and the outer disks are overlapped between the inner disk install end and the outer disk install end to be combined each other through friction by virtual pressure
Data Source
AI summary
An electronic brake system includes an electromagnet housing in which an inner disk install end is integrally formed around the inside surface. An electromagnet is disposed inside of the electromagnet housing. A motor plate is installed at a motor/generator, and in which an outer disk install end disposed outside of the inner disk install end in a radial direction is integrally formed around one side surface. A disk unit is provided in which a plurality of the inner disks and the outer disks are overlapped between the inner disk install end and the outer disk install end to be combined each other through friction by virtual pressure. A piston is disposed according to the inside surface of the electromagnet housing, connected with a plunger being introduced along the support end of the rear cover, and operated by electromagnetic force of the electromagnet to supply virtual pressure to the disk unit.