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Vehicle fuel quantity measuring device using power transmission sequence

A technology for measuring device and fuel quantity, which is applied in the direction of measuring device, lubrication indicating device, liquid level indicator for physical variable measurement, etc. It can solve problems such as frequent occurrence of errors or failures, errors, buoyancy obstruction, etc., and achieve excellent accuracy Effect

Inactive Publication Date: 2004-07-21
KYUNG CHANG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] First, if foreign matter adheres to the float, it will interfere with the buoyancy, resulting in error or failure
[0006] Second, since a varistor whose resistance value changes with the buoyancy of the float is used, errors or failures due to corrosion of the contact part of the varistor frequently occur

Method used

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  • Vehicle fuel quantity measuring device using power transmission sequence
  • Vehicle fuel quantity measuring device using power transmission sequence
  • Vehicle fuel quantity measuring device using power transmission sequence

Examples

Experimental program
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Embodiment Construction

[0037] figure 1 It is a diagram for explaining the principle of two transmission lines, figure 2 It is a diagram showing the concept when the vehicle fuel quantity measuring device 1 using a transmission line according to the present invention is installed in a fuel tank 100, image 3 yes figure 2 A conceptual diagram of a part of the fuel quantity measuring device 1.

[0038] figure 2 A fuel quantity measuring device 1 including a transmission line 2 composed of two lines 2a, 2b is shown. On the two transmission lines 2, the capacitance varies with the depth of the fuel, while the reflection coefficient varies with the characteristic impedance. Therefore, if the reflected wave or capacitor voltage is measured, the fuel amount represented by the fuel depth in the fuel tank can be known, and the reflected wave or capacitor voltage reflected from the transmission line is measured, amplified and used as the current value. The fuel level is displayed on the measuring devic...

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Abstract

The present invention relates to an apparatus and method for measuring the amount of fuel in a vehicle using transmission lines. An apparatus for measuring the amount of fuel in a vehicle according to an embodiment of the invention comprises a pair of transmission lines provided within a fuel tank, a measuring unit for measuring reflective wave or capacitance voltage which varies in accordance with the depth of the fuel by generating high-frequency wave in the transmission line.

Description

technical field [0001] The present invention relates to a vehicle fuel quantity measuring device using a transmission line, and more particularly, to a new vehicle electronic fuel quantity measuring device which does not use air buoyancy and does not require elements such as variable resistors. Background technique [0002] Fuel amount measuring devices usually measure fuels such as highly volatile volatile oils, and thus may pose a serious safety hazard to sensors with current flowing, lamps, and electrical devices directly used. [0003] In a conventional vehicle fuel quantity measuring device, a method of measuring a fuel quantity by floating a float in a fuel tank is employed. This method utilizes the principle that air is lighter than fuel. Since the float installed in the fuel tank floats with the amount of fuel, it is a method of grasping the amount of fuel by changing the resistance value installed at the tip of the float. [0004] However, this method has the follo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D45/00G01F23/26G01F23/284
CPCG01F23/284G01F23/268G01F23/26
Inventor 孙泰镐
Owner KYUNG CHANG IND
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