With the rapid development and application of automotive electronic technology, embedded technology and virtual instrument technology, automotive electronic control has made great progress in the accuracy, range, adaptability and intelligence of control, and realized the overall optimized operation of the car. . As the information source of the motor vehicle electronic control system, the motor vehicle sensor is a key component of the motor vehicle electronic control system, and one of the core contents of the research in the field of motor vehicle electronic technology. Automotive sensors will also gradually become more advanced, and the functions of cars will be more complete.
So, for the pressure sensor in the sensor, do you know what its role in the car is reflected in? The following editor will specifically introduce the relevant application of the pressure sensor in the motor vehicle.
Automotive pressure sensors are usually used to measure the pressure of liquids and gases in vehicles, so they can be used in many vehicle systems. Segmented by application, the automotive pressure sensor market can be divided into transmission systems, engine control systems, power steering systems, heating, ventilation and air conditioning systems (HVAC), airbags, anti-lock braking systems (ABS), and direct tire pressure monitoring systems ( directTPMS). Engine control systems are expected to occupy the largest share of the automotive pressure sensor market.
Therefore, the automobile pressure sensor is mainly responsible for the following aspects: detecting the negative pressure of the cylinder to control ignition and fuel injection; detecting the atmospheric pressure to control the air-fuel ratio during climbing; detecting the cylinder pressure to control the ignition advance angle; detecting the waste recirculation flow and engine oil Pressure, brake oil pressure, tire air pressure, etc., and respond to related quantities.
Along with the development of modern automobile technology, one of the characteristics is that more and more components adopt electronic control. For example, electronically controlled fuel injection, exhaust emission, brake anti-lock braking system, automatic air conditioning, headlight brightness control, automatic driver seat adjustment, steering control, electronically controlled suspension, and so on. The work of electronic automatic control depends on the information of the sensor. Therefore, the trend of automobile development is safety, energy saving and environmental protection.
In summary, due to the development and application of new technologies such as electronic technology, computer technology, and information technology, automotive electronic control has made great progress in control accuracy, range, adaptability, and intelligence, and has achieved a comprehensive range of vehicles. Optimize operation. Therefore, electronic control technology has obvious advantages in many aspects, such as reducing emission pollution, reducing fuel consumption, and improving safety and comfort.
At present, motor vehicles are still powered by petroleum products, and they emit large amounts of nitrogen oxides and particles into the air during driving, causing air pollution. In the process of processing automobile exhaust, the on-board urea control module calculates the precise urea injection rate under various engine operating conditions and the urea mixed air volume in the vehicle compressed air system. Then, the pressure sensor monitors the injection pressure to control and adjust the flow rate of urea, so that it is injected into the emission treatment system in the form of atomization, and is mixed with the exhaust gas to complete the catalytic reduction reaction through the catalyst. The control of the pressure by the pressure sensor directly determines the urea injection volume, which will further affect the effect of catalytic reduction and play a vital role in exhaust gas purification.
For this reason, for the application of pressure sensors in motor vehicles, the pressure sensor-U7100 ultra-stable series pressure sensor provided by Gongye.com has established a new model of performance and price ratio for demanding engine and motor vehicle applications. It is suitable for liquid and gas pressure measurement, and even Including sewage, steam and corrosive liquids and other media. The pressure chamber of U7100 is made of 316L stainless steel, no O-ring, and does not directly contact the measuring medium, and a variety of non-leakage pressure ports are available. The automotive-grade pressure transmitter integrates sealed pressure ports and electrical connectors, with a range from 0-15 to 150psi (10Bar), and has very good durability. The sensor complies with the latest heavy industry CE standards, including surge protection, and 16Vdc forward and reverse overvoltage protection.
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