The core of the oil pressure sensor: thick film pressure sensor chip

In the precision control system of modern engines, oil pressure sensors play a vital role. Behind this, the thick film pressure sensor chip has become an indispensable core component of the oil pressure sensor due to its excellent pressure measurement performance and stability.

1. Characteristics of thick film pressure sensor chips

Thick film pressure sensor chip is a sensor element made using thin film resistor technology. It has the characteristics of high precision, high sensitivity, high reliability and good linearity. These characteristics enable the thick film pressure sensor chip to accurately measure oil pressure in a high-pressure environment and convert the pressure signal into an electrical signal output for real-time analysis and control by the engine management system.

2. Precision design and manufacturing

The manufacturing process of thick film pressure sensor chips requires precise design and strict process control. First, a thin film with a specific resistance value is formed on the substrate through precise thin film resistor technology. Then, through special processing, a stable contact surface is formed between the film and the substrate to ensure the accuracy and reliability of the sensor element. Finally, rigorous testing and calibration ensure that the sensor element can maintain stable performance output in high-pressure environments.

3. Measurement accuracy under high pressure environment

During engine operation, the oil pressure changes in a wide range, ranging from low pressure to high pressure. The thick film pressure sensor chip can accurately measure oil pressure and maintain stable performance output in such a high-pressure environment. This is because it has excellent mechanical strength and chemical stability, and can resist corrosion of sensor elements by high temperature, high pressure and chemicals in engine oil.

4. Convert pressure signal into electrical signal

The thick film pressure sensor chip can not only accurately measure oil pressure, but also convert the pressure signal into an electrical signal output. This is achieved through internal signal processing circuitry. When oil pressure acts on the sensor element, a corresponding change in resistance occurs. The signal processing circuit detects this resistance change and converts it into an electrical signal output for real-time analysis and control by the engine management system.

The thick film pressure sensor chip in the oil pressure sensor plays an important role in the engine control system with its excellent performance. Its precision design and manufacturing ensure the accuracy and stability of the sensor element in high-pressure environments. By converting the pressure signal into electrical signal output, it provides important real-time data support for the engine management system, ensuring the stable operation and efficient performance of the engine.