Pump Assembly Fluid Sensor for Brake Leakage Detection
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Solution Overview
Problem
Hydraulic vehicle braking systems face challenges in detecting brake fluid leaks before they affect electronic systems or the electric motor, which can lead to operational failures in slip control and brake pressure regulation.
Innovation Solution
A pump assembly incorporating an electric motor, a hydraulic pump with a piston cylinder unit, and a fluid sensor that measures resistance changes on a circuit board to detect leaking brake fluid, preventing it from reaching critical components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a hydraulic pump system is used to generate brake pressure, then brake force is improved, but the risk of brake fluid leaking and affecting electronic systems increases
Solution Approach 1:
The patent introduces an intermediary substance (hydraulic fluid) that separates the electronic motor from direct contact with brake fluid, while the sensor acts as an early warning intermediary that detects leakage before it reaches critical components. The sensor monitors the hydraulic fluid condition and provides early detection of contamination or leakage, preventing damage to electronic systems.
Solution Approach 2:
The patent replaces traditional mechanical linkage braking systems with an electric motor-driven hydraulic pump system. This substitution allows for more precise control and increased brake force while introducing the need for electronic protection measures, hence the fluid sensor becomes essential to protect the electronic components from hydraulic fluid leakage.
2Productivity
If an electric motor drives the hydraulic pump, then brake pressure generation efficiency is improved, but vulnerability to brake fluid contamination of electronic components increases
Solution Approach 1:
The fluid sensor performs preliminary detection of brake fluid leakage or contamination before it can reach and damage the electric motor or electronic control systems. This early warning system allows for preventive action, maintaining the reliability of electronic components while preserving the high efficiency of electric motor-driven brake pressure generation.
Solution Approach 2:
The patent implements a feedback mechanism where the fluid sensor continuously monitors the hydraulic fluid condition and provides information to the control system. This feedback loop enables real-time detection of leakage or contamination, allowing the system to respond appropriately and protect electronic components while maintaining optimal brake pressure generation efficiency.
3Device complexity
If brake fluid leaks are not detected early, then system simplicity is maintained, but operational failure risk increases
Solution Approach 1:
The fluid sensor enables the braking system to self-monitor and self-diagnose potential leakage issues. This self-service capability detects brake fluid leakage early, providing warning before operational failure occurs, thereby maintaining high operational reliability with minimal additional system complexity.
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 solution effectively identifies and addresses brake fluid leaks early, ensuring the integrity of electronic systems and motor operation, thereby maintaining reliable brake pressure generation and slip control functionality.
Implementation Method 1
The fluid sensor makes it possible to ascertain leaking brake fluid before the brake fluid, for example, affects or renders inoperative an electronic system for controlling or regulating a brake pressure or a brake force
Data Source
AI summary
A pump assembly for generating a brake pressure in a hydraulic slip-controlled power vehicle braking system, including a fluid sensor between an electric motor and a piston cylinder unit with the aid of which a small brake fluid quantity inadvertently leaking from the piston cylinder unit in the form of leakage is ascertainable before it affects a function of an electronic control or the electric motor.