Fuel Pump Module Integrating Ultrasonic Sensor
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Solution Overview
Problem
Existing fuel tank systems face challenges in accurately measuring fuel height using ultrasonic waves due to distortion caused by side walls and incur increased manufacturing processes and costs from separate installation of ultrasonic sensors and fuel tank modules.
Innovation Solution
A fuel pump module with an ultrasonic sensor integrally installed, featuring a reservoir part, a vertically extended tube with a perforated section, and a fuel measuring part that includes a sliding and fixing mechanism, allowing for accurate fuel height measurement without propagating time distortion by using an ultrasonic wave sensor within a tube.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If an ultrasonic wave sensor is separately attached to a fuel tank module, then the fuel tank module can be assembled, but the manufacturing process and costs are increased
Solution Approach 1:
The patent integrates the ultrasonic wave sensor directly into the fuel pump module, combining previously separate components (fuel tank module and ultrasonic sensor) into a single integrated unit. This eliminates the need for separate attachment processes and reduces manufacturing complexity while maintaining functionality.
2Measurement precision
If an ultrasonic wave sensor is placed at the bottom of the fuel tank, then fuel height can be measured, but the propagation time is distorted by side walls
Solution Approach 1:
The patent extracts the ultrasonic wave sensor from the conventional bottom position and relocates it to the fuel pump module, which is positioned differently within the fuel tank system. This extraction from the problematic bottom position eliminates the interference from tank side walls while maintaining the ability to measure fuel height through the pump module's position.
Solution Approach 2:
The fuel pump module serves as an intermediary structure that houses the ultrasonic wave sensor. This intermediary positioning allows the sensor to measure fuel height without direct contact with the fuel tank bottom and side walls, eliminating propagation time distortion while still enabling accurate measurements.
3Ease of manufacture
If the ultrasonic sensor is integrated into the fuel pump module, then manufacturing costs are reduced, but the sensor placement must be precisely positioned
Solution Approach 1:
By merging the ultrasonic wave sensor with the fuel pump module during the manufacturing process, the patent achieves cost reduction through integrated production. The sensor is positioned within the pump module structure itself, which provides built-in positioning features that ensure precise placement without requiring additional post-assembly adjustments.
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 reduces manufacturing costs and complexity while ensuring accurate fuel height measurement, maintaining measurement accuracy even when the fuel tank is tilted, by integrating the ultrasonic sensor within the fuel pump module.
Implementation Method 1
A height of the fuel in the fuel tank was measured by measuring a propagation time at which the ultrasonic wave signal travels from a bottom of the fuel tank to a surface height of the fuel
Implementation Method 2
measuring a propagation time at which the ultrasonic wave signal travels
Data Source
AI summary
Provided is a fuel pump module for measuring a height of fuel using an ultrasonic wave, and more particularly, a fuel pump module for measuring a height of fuel using an ultrasonic wave, where an ultrasonic wave sensor for measuring the height of the fuel contained in a fuel tank is integrally installed in the fuel pump module provided in the fuel tank.