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how to connect fuel level gauge
The working principle of fuel gauge:
Today's vehicles generally have a fuel pump in the fuel tank that is controlled by a computer to pump fuel and deliver it to the engine. There will be a float installed on this fuel pump. The float itself is connected to a sliding resistor. Through the float floating up and down in the gasoline, the change of the liquid level will cause the change of the resistance, so that different electrical signals will be transmitted to the engine. computer. Finally, after computer calculation, confirm the amount of fuel in the fuel tank. It seems that the working principle of the fuel gauge is quite scientific, but in fact there are many factors that may cause the inaccurate display of the fuel gauge. There are many factors that can affect the display of the car fuel gauge, such as the float being stuck by the wire in the fuel tank, or the wire transmitting the electrical signal from the fuel pump is faulty, or there is a problem with the engine computer, etc.
The sensor is resistive, the red wire is connected to the signal, and the blue wire is connected to the negative pole. And after the fuel tank is placed, the highest oil level cannot be 2.5 meters higher than the base of the diesel generator set. If the oil level of the large oil depot is higher than 2.5 meters, a daily fuel tank should be added between the large oil depot and the diesel generator set so that the oil can be directly delivered. The pressure is not greater than 2.5 meters.
Mainly there are two wires on the fuel gauge, one positive and one negative, of which the positive wire must have electricity, and the resistance on the oil float also has two wires, one in and one out, and then it can be connected in series with the two wires on the fuel gauge. , the negative line after the series connection must be grounded.
The fuel gauge is generally located directly in front of the vehicle's driving position, and is located on the same dial as the indicators for water temperature, speed, and speed. Each gauge has a simple icon. The fuel gauge is represented by a rectangular icon.
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