fuel tank level gauge without a float

2022-04-07

For the all fuel tank level gauge that needs to be with float, all the fuel tank level gauge cannot work without a float.

Working principle:

The fuel float floats on the fuel surface by buoyancy. The position of the float is the position of the liquid surface. Knowing the height of the liquid surface, the volume of the fuel in the fuel storage tank can be known through the shape of the fuel tank. In other words, it is a sliding rheostat. The fuel level is different, the height of the float is also different, and the resistance value of the sliding rheostat connected to the float is different. The computer gives a voltage to the sliding rheostat, and after returning to the pressure drop, the computer estimates the fuel quantity and displays the data. to the car dashboard. The float in the actual fuel tank is a sliding variable resistor, which floats on the float to change the resistance in the circuit, and then reflects it through the fuel gauge pointer on the instrument.

The fuel gauge is inaccurate, the adjustment method of the fuel float
Don't touch the needle on the instrument panel. Some people think that it is inaccurate and need to adjust the needle on the instrument panel. This is wrong. The fuel float is actually a sliding rheostat. You will find that the fuel float adjusts the current to the circuit based on the buoyancy of gasoline. When the current is 0, the needle of the natural watch is at E. That's when you don't power up, the pointer points to 0.

1. This method is only applicable to the indication of the fuel gauge, and it can also be changed with refueling, fuel use, and the pointer of the fuel gauge, but it is not allowed.

2. If the fuel gauge does not change, it means that the fuel float is broken.

3. The fuel float of the curved beam car is in the fuel tank and is fixed by 4 screws.

The adjustment of the fuel float is very simple, that is to bend or straighten the connecting wire connecting the float.

You just need to consider the following questions:

The buoyancy of the float on the fuel surface can cause the resistance on it to move.