Brake Fluid Level Sensor Torque Limiting Control
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Solution Overview
Problem
Existing vehicle braking systems fail to ensure safe operation when brake fluid is insufficient or leaks, leading to inadequate braking force, which can cause accidents, and subsequent issues such as secondary collisions and difficulties in moving the vehicle to a safe location for maintenance.
Innovation Solution
A vehicle braking control method that generates a warning signal and limits engine torque to allow the vehicle to travel at a minimum speed, even when the brake fluid is insufficient, using a cluster display to inform the driver of the issue and guide them to safely stop the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the engine is turned off to stop the vehicle when brake fluid is insufficient, then braking safety is improved, but the vehicle cannot move to a safe place and may cause secondary accidents
Solution Approach 1:
The system changes the engine torque parameter from normal operation to limited operation when brake fluid insufficiency is detected. Instead of completely shutting off the engine, the torque is restricted to a safe range that allows controlled movement at low speeds, enabling the vehicle to reach a safe location while maintaining braking safety through the warning system and controlled mobility.
2Reliability
If the vehicle is completely stopped when brake fluid is insufficient, then accident prevention is improved, but maintenance cannot be performed and tow truck service is required
Solution Approach 1:
The system modifies the vehicle's operational parameters by limiting engine torque rather than complete shutdown. This allows the vehicle to move under controlled conditions to a safe location where maintenance can be performed, eliminating the need for tow truck service while still preventing accidents through controlled mobility and warning signals.
3Loss of information
If the warning light is turned on to alert the driver of brake fluid insufficiency, then driver awareness is improved, but the driver may not recognize the spongy brake pedal and still operate the vehicle unsafely
Solution Approach 1:
The system implements a feedback mechanism where the cluster provides not only a warning light but also specific guidance phrases that instruct the driver on how to safely stop the vehicle. This enhanced feedback ensures the driver understands the severity of the condition and the proper response, improving both awareness and operational safety.
Solution Approach 2:
The system takes preliminary anti-action by limiting engine torque before the driver can cause harm through improper braking operations. By restricting the vehicle to minimum speed operation, the system prevents the driver from accidentally causing an accident through spongy brake pedal operation while still allowing controlled movement to safety.
Data Source
AI summary
A vehicle braking control method is provided. When a driver intends to drive a vehicle after the delivery of the vehicle or a factory mechanic intends to test the vehicle before the delivery of the vehicle after the engine is turned on even when a warning light is turned on due to the insufficiency of the brake fluid, a warning signal indicating that a level sensor is malfunctioning is generated using an instrument cluster, or driving torque of the engine is limited while a warning phrase indicating the insufficiency of the brake fluid is displayed using the cluster. Therefore, the vehicle may travel at a minimum speed. Thus, the driver is enabled to drive the vehicle to a safe place. Accordingly, a secondary accident is prevented and a subsequent maintenance operation is easily performed.