Calibration method of a vehicle fuel tank calibration system

Abstract

The invention discloses a car fuel tank calibration system and calibration method. The calibration system comprises a fuel tank to be measured, a liquid storage tank, a liquid level meter and an industrial personal computer, wherein the oil inlet of the fuel tank to be measured is communicated with the fuel outlet of the liquid storage tank, and a fuel return flowmeter and a fuel return pump are arranged on a first pipeline; the bottom of the liquid level meter is communicated with the bottom of the fuel tank to be measured through a second pipeline; all the fuel return flowmeter, the fuel return pump and the liquid level meter are electrically connected with the industrial personal computer. Compared with the prior art, the industrial personal computer, the fuel return flowmeter and the liquid level meter are arranged in the car fuel tank calibration system. After receiving a flow signal of the fuel return flowmeter and a liquid level height signal of the liquid level meter, the industrial personal computer is capable of outputting a volume-height curve graph with consecutive changes on a display. The car fuel tank calibration system is controlled by a computer in the whole process, so that the volume of the fuel tank is not calibrated by the adoption of a manual or semi-automatic fuel filling method, hence, the efficiency and measurement precision are improved, and the laborintensity is reduced.

Description

Technical field [0001] The invention relates to the technical field of fuel tanks, in particular to a calibration method of a vehicle fuel tank calibration system. Background technique [0002] At present, the fuel volume of vehicle fuel tanks (including passenger cars, commercial vehicles and construction machinery vehicles, etc.) is matched with fuel gauges. Generally, manual or semi-automatic methods are used to fill the fuel tank to be tested with water, and the volume of fixed points is collected The height corresponding to the height is generally collected, and the height corresponding to the fuel volume of the six volume points of E point, alarm point, 1 / 4 point, 1 / 2 point, 3 / 4 point, and F point is generally collected. Accurate calibration generally collects the fuel volume points of E point, alarm point, 1 / 4 point, 3 / 8 point, 1 / 2 point, 5 / 8 point, 3 / 4 point, 7 / 8 point and F point. The corresponding height. [0003] The calibrated fuel volume and height of the fuel tank v...

AI Technical Summary

Problems solved by technology

[0003] The fuel volume and height of the fuel tank volume calibration are only a few volume points, and it is impossible to output a continuously changing fuel volume-height relationship curve

This will cause the fuel gauge in the cab to jump, which will affect the driver's subjective feeling

At the same time, manual or semi-automatic calibration of the fuel tank volume is time-consuming and laborious. The test results are inevitably affected by personnel factors, and the accuracy is not high.

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