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Anonymous users2024-02-12Generally behind the engine, on the cylinder block, next to the oil filter cartridge seat. There is a plug with a wire on it, which is located on the front oil duct of the oil filter.
The electronic oil pressure sensor consists of a thick film pressure sensor chip, a signal processing circuit, a housing, a fixed circuit board device, and two leads. The signal processing circuit is composed of a power supply circuit, a sensor compensation circuit, a zeroing circuit, a voltage amplification circuit, a current amplification circuit, a filter circuit and an alarm circuit.
Figure 1 is a structural diagram of the sensor, and Figure 2 is a block diagram of the sensor. The thick film pressure sensor is a new type of strain pressure sensor that appeared in the 80s of the 20th century, which is developed by using the piezoresistive effect of the thick film resistance printed and sintered on the ceramic elastomer. Four thick film resistors are directly printed and sintered on a ceramic elastic diaphragm and connected to form a Wheatstone bridge through a conduction belt.
When the measured liquid level pressure acts on the ceramic elastomer, the elastic diaphragm produces deflection deformation, and at the same time, the thick film resistance imprinted on the elastic diaphragm also produces strain of the same magnitude, and the resistance value of two thick film resistors decreases under compressive strain. The other 2 tensile strains increase the resistance value. In this way, the measured pressure value is converted into a bridge output signal, and the signal size is proportional to the pressure.
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Anonymous users2024-02-11Hello! Detect the temperature of the oil, send a signal to the computer, and report the warning instrument when the temperature is high.
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Anonymous users2024-02-101.When the engine is running, the pressure measuring device detects the pressure of the oil, converts the pressure signal into an electrical signal and sends it to the signal processing circuit, after voltage amplification and electric chatter amplification, the amplified pressure signal is connected to the oil pressure indicator through the signal line, and the ratio of the current passed by the two coils inside the oil pressure indicator table is changed, so as to indicate the oil pressure of the engine. After voltage amplification and current amplification of the pressure signal, but also compared with the alarm voltage set in the alarm circuit, when lower than the alarm voltage, the alarm circuit will output the alarm signal, and the alarm light is lit through the alarm line.
2.The wiring mode of the electronic oil pressure sensor is completely consistent with the traditional mechanical sensor, which can replace the mechanical pressure sensor, and is directly connected with the automobile oil pressure indicator gauge and the low-pressure alarm lamp, indicating the oil pressure of the diesel automobile engine and providing the low-pressure alarm signal. Compared with the traditional piezoresistive oil pressure sensor, the electronic automotive oil pressure sensor has the advantages of no mechanical moving parts (i.e., no contact), high accuracy, high reliability, long life, etc., and meets the requirements of automotive electronic development.
3.Due to the harsh working environment of the car, the requirements for the sensor are very strict, in the design of the electronic automobile oil sensor, it is not only necessary to select the pressure measuring device with high temperature resistance, corrosion resistance and high precision, and the components with reliable performance and wide operating temperature range, but also need to take anti-interference measures in the circuit to improve the reliability of the sensor.
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If you look like this car, it is recommended that you use a fully synthetic motor oil, generally speaking, you can choose Mobil One or Castrol EXTREME.
Dongfeng Fengshen AX7 has no problem with using fully synthetic engine oil, you can use it with confidence, or you can use the original semi-synthetic engine oil.