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What is the function of the fuel pressure sensor?

1 Answers
DeGage
07/29/25 2:22pm
The function of the fuel pressure sensor is to control the fuel pressure in the fuel line, maintain a constant fuel supply pressure for the injectors, and return excess fuel to the fuel tank. The fuel pressure sensor consists of a printed circuit board, sensor element, spacer block, and housing, among other components. Inside it, there is a pressure chamber containing a diaphragm with an overflow valve. The inner side of the diaphragm forms a vacuum chamber, which houses a spring. The working principle of the fuel pressure sensor is as follows: pressure acts directly on the diaphragm of the sensor, causing the diaphragm to produce a micro-displacement proportional to the medium pressure. This changes the resistance of the sensor, and electronic circuits detect this change and convert it into a standard signal output corresponding to the pressure. The fuel pressure sensor is one of the most commonly used pressure transmitters in industrial practice. It is widely applied in various industrial automation environments, including industries such as petroleum pipelines, water conservancy and hydropower, railway transportation, intelligent buildings, production automation, aerospace, military, petrochemicals, oil wells, power generation, ships, machine tools, pipeline ventilation, and boiler negative pressure. Its features include easy installation and long service life.
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