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how to hook up oil pressure gauge
The oil pressure gauge is installed in the oil tank:
1. When installing the oil pressure gauge, first release the pressure of the oil system, start the engine, and unplug the relay or power plug of the electric gasoline pump;
2. After the engine is turned off, restart the engine 2-3 times to release the oil pressure. Turn off the ignition switch, install the electric gasoline pump relay or power plug, and remove the negative ground wire of the battery;
3. Install the oil pressure gauge with a range of about 1MPa and the tee on the outlet pipe joint of the oil pump.
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 oil 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 oil 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 oil 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 oil gauge. , the negative line after the series connection must be grounded. The oil 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 is distinguished by a simple icon. Today's vehicles generally have a oil pump in the oil tank that is controlled by a computer to pump oil and deliver it to the engine.
There will be a float installed on this oil 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 oil in the oil tank. It seems that the working principle of the oil gauge is quite scientific, but in fact there are many factors that may cause the inaccurate display of the oil gauge. There are many factors that can affect the display of the car oil gauge, such as the float being stuck by the wire in the oil tank, or the wire transmitting the electrical signal from the oil pump is faulty, or there is a problem with the engine computer, etc.
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