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Urea pump pressure sensor plays an important role in urea injection system
Release time:2024-03-13
The urea pump pressure sensor plays an important role in the urea injection system. It mainly uses the working principle of silicon piezoresistive pressure sensor, which uses the piezoresistive effect of monocrystalline silicon to work. Specifically, the silicon diaphragm in the sensor is connected to four semiconductor resistors of equal value in different directions. These resistors are connected in the form of a Wheatstone bridge as a sensitive element for sensing pressure changes.
Urea pump pressure sensorplays an important role in the urea injection system. It mainly uses the working principle of silicon piezoresistive pressure sensor, which uses the piezoresistive effect of monocrystalline silicon to work. Specifically, the silicon diaphragm in the sensor is connected to four semiconductor resistors of equal value in different directions. These resistors are connected in the form of a Wheatstone bridge as a sensitive element for sensing pressure changes.
When the sensor diaphragm is subjected to external pressure, the equilibrium state of the Wheatstone bridge is broken. At this time, the sensor can output a voltage signal proportional to the external pressure under the action of the external constant current or constant voltage excitation power supply. After AD conversion, the voltage signal will be collected by the main control chip of the system, and then realize the real-time monitoring of the pressure of the urea pump.
The accurate measurement of the urea pump pressure sensor is essential to ensure the normal operation of the urea injection system. Through real-time monitoring of the pressure changes of the urea pump, potential problems can be found and solved in time, so as to ensure that the exhaust emissions of diesel vehicles meet environmental protection standards.
In addition, the urea pump pressure sensor also needs to have high reliability and stability to cope with the complex and changeable vehicle operating environment. At the same time, with the continuous development of technology, the performance of urea pump pressure sensor is also constantly improving, which provides a strong guarantee for the environmental performance of diesel vehicles.
In short, the urea pump pressure sensor is an indispensable part of the urea injection system. It provides key data support for the exhaust emission control of diesel vehicles by accurately measuring the pressure change of the urea pump.
Keywords:Urea pump pressure sensor
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Add: Guangdong Province,China