Method for measuring fuel quantity of fuel tank of vehicle

Abstract

The invention discloses a method for measuring the fuel quantity of a fuel tank of a vehicle, and main parts comprise a fuel sensor, a vehicle-mounted terminal, an engine controller, and a wire. The method comprises the steps: firstly calibrating parameters of the fuel tank; secondly finding a fuel quantity calibrated value corresponding to a corresponding position from the vehicle-mounted terminal according to a resistance value outputted by the fuel sensor; thirdly measuring the fuel quantity between two positions; and finally correcting the calibration parameters of the fuel tank when the temperature of fuel changes. The change data of the fuel quantity is finer, and the authenticity of oil quantity data cannot be affected by temperature changes. The cost of the whole vehicle does not change, and no electrical fault is increased.

Description

technical field [0001] The invention belongs to the field of vehicle fuel tanks, and in particular relates to a method for measuring the fuel volume of a vehicle fuel tank. Background technique [0002] Since the driver of a commercial vehicle is not the same person as the owner of the vehicle, there is often a situation where the actual fuel consumption does not match the bill when the driver reimburses the owner for a fuel ticket. To solve this problem, the traditional technical solution is to install a high-precision fuel quantity sensor inside the fuel tank, and use the vehicle-mounted terminal to record the change process of the liquid level of the fuel tank. Disadvantages of prior art: [0003] 1. It is necessary to add additional work such as fuel tank openings and cables, which is a heavy workload and has potential safety hazards; [0004] 2. The high-precision oil quantity sensor is expensive, which increases the cost of the whole vehicle; [0005] 3. In the case...

AI Technical Summary

Problems solved by technology

[0003] 1. It is necessary to add additional work such as fuel tank openings and cables, which is a heavy workload and has potential safety hazards;

[0004] 2. The high-precision oil quantity sensor is expensive, which increases the cost of the whole vehicle;

[0005] 3. In the case of a large-volume fuel tank, the oil volume changes too much between the two scales, and accurate monitoring cannot be realized;

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