Emergency Braking Control Using Limited Slip Differential
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Solution Overview
Problem
Hydraulic braking systems face reduced braking force and performance limitations when oil leakage occurs, as the braking force cannot be effectively distributed to all wheels, leading to insufficient braking in strong braking situations and wheel locking.
Innovation Solution
An emergency braking control system using a limited slip differential that determines system failures and engages the differential to distribute braking force from a normal hydraulic line to the affected line, ensuring more robust braking by mechanically connecting drive wheels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the hydraulic line is separated for each two left and right wheels to maintain basic braking force during oil leakage, then the braking system reliability is improved, but the maximum braking force is reduced to 1/2 of normal
Solution Approach 1:
The patent merges the normal and fail lines by engaging the limited slip differential, allowing braking force to be transmitted from the normal line through the differential mechanism to the wheel on the fail line side, thereby combining the functionality of both lines to restore maximum braking force while maintaining the separated hydraulic line structure for reliability
2Reliability
If braking force is generated only in one side pipe during oil leakage, then the braking system can still function, but the wheel is easily locked in strong braking situations
Solution Approach 1:
The limited slip differential acts as an intermediary mechanism that receives braking force from the normal line and distributes it to both wheels, preventing direct wheel locking by controlling the torque distribution through the differential's inherent torque-vectoring capability during strong braking situations
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 solution enhances braking performance by maintaining sufficient braking force even with oil leakage, preventing wheel locking and ensuring effective braking in both low and high pedal effort scenarios.
Implementation Method 1
a limited slip differential disposed to restrict the differential of the drive wheels
Data Source
AI summary
An emergency braking control system of a vehicle using a limited slip differential, may include a brake circuit formed by splitting hydraulic lines for left and right side drive wheels; a limited slip differential disposed to restrict the differential of the drive wheels; and a controller for determining whether or not the braking circuit failure occurs in a braking situation, and performing the engagement control of the limited slip differential, wherein the controller is configured to perform the engagement control of the limited slip differential to distribute a braking force to drive wheel connected to a hydraulic line where the braking circuit failure occurs when the brake circuit failure occurs in the braking situation.