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Fuel Quantity Sensor
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Electronic Pressure Sensor
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Engine Oil Pressure Sensor
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Fuel Cut-off Solenoid Valve
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The fuel quantity sensor is a device used to accurately measure the amount of fuel in the fuel tank, and it has a wide range of applications in many fields such as automobiles. Types and Characteristics ● Float-type fuel quantity sensor: It has a simple structure and low cost. The float changes with the height of the oil surface, driving the rheostat to change the resistance value for measuring the fuel quantity. However, its accuracy is limited and it is easily affected by the driving attitude of the vehicle. ● Capacitive fuel quantity sensor: It has high measurement accuracy, is not affected by the changes in fuel temperature and density, and has a rapid response. However, it has high requirements for the purity of the fuel and also has a relatively high cost. ● Ultrasonic fuel quantity sensor: It has high accuracy, uses non-contact measurement, can adapt to fuel tanks of various shapes, and has strong anti-interference ability. But it is expensive and has strict installation requirements. Functions It can accurately measure the amount of fuel in the fuel tank, convert the fuel quantity information into electrical signals or other recognizable signals, and transmit them to the control system of the vehicle or equipment. Then, the information is displayed on the dashboard or other display devices, allowing the driver or operator to know the remaining fuel quantity in real time. This enables them to reasonably arrange the refueling plan and avoid equipment failures or operation interruptions caused by running out of fuel.
An electronic pressure sensor is a device that converts pressure signals into electrical signals and is widely used in various fields such as the automotive industry.
Type Characteristics
● High precision: It can accurately measure tiny pressure changes, and the measurement accuracy can reach 0.1%FS (full scale) or even higher.
● High sensitivity: It responds quickly to pressure changes and can detect slight pressure fluctuations.
● Good stability: During long-term use, it can maintain stable performance and is less affected by environmental factors such as temperature and humidity.
● Easy to integrate: It has a small volume and light weight, making it convenient to integrate with other devices, and can achieve automated measurement and control.
It mainly relies on the piezoresistive effect, piezoelectric effect, or capacitive effect, etc. Taking the piezoresistive type as an example, when pressure acts on the sensitive element of the sensor, the internal resistance value will change, and the magnitude of the pressure can be obtained by measuring the change in resistance. For the piezoelectric type, it utilizes the characteristic that certain materials generate electric charges when subjected to pressure, converting the pressure into an electric charge signal. The capacitive type measures the pressure by changing the distance between the capacitor plates or the dielectric constant through pressure, thereby changing the capacitance value.
The oil pressure sensor is an important component in the lubrication system of an automotive engine. It is used to monitor the oil pressure and convert it into an electrical signal, enabling the vehicle's electronic control unit (ECU) or the driver to know the status of the oil pressure.
Type Characteristics
● Variable resistance oil pressure sensor: It has a simple structure and a relatively low cost. The resistance value inside the variable resistor changes with the change of the oil pressure, thus changing the current or voltage signal in the circuit.
● Piezoelectric oil pressure sensor: It operates based on the piezoelectric effect, featuring high precision and a fast response speed. It can quickly and accurately sense the slight changes in the oil pressure, and is less affected by environmental factors such as temperature, showing good stability.
● Capacitive oil pressure sensor: Utilizing the capacitive principle, it has high precision and reliability, with strong anti-interference ability. It can work stably in a complex electromagnetic environment, and is not very sensitive to the contamination of the engine oil.
It converts the changes in the oil pressure into changes in the electrical signals, providing the oil pressure information for the automotive electronic control system or the instrument panel, so that the driver can understand the status of the oil pressure. It accurately measures the oil pressure and converts the pressure signal into an electrical signal, and is widely used in engine control systems with high requirements for the measurement accuracy of the oil pressure, providing accurate data for the precise control and fault diagnosis of the engine. It converts the changes in the oil pressure into changes in the capacitance value, and then converts them into electrical signals for output through the circuit, providing accurate oil pressure information for the vehicle's electronic control unit, which helps to achieve the precise control and monitoring of the engine lubrication system.
The fuel cut-off solenoid valve is an important component in the fuel system, mainly used to control the on-off of the fuel. The fuel cut-off solenoid valve is widely applied in various fuel-powered vehicles such as cars and motorcycles, as well as some mechanical equipment using fuel engines, such as generators and agricultural machinery. Structural Composition ● Electromagnetic coil: It is the component that generates a magnetic field. After being energized, it generates magnetic force to drive the movement of the valve core. ● Valve core: Under the action of electromagnetic force and spring force, it controls the opening and closing of the fuel passage. ● Spring: When the electromagnetic coil is de-energized, the spring provides elastic force to reset the valve core and close the fuel passage. ● Housing: It protects the internal components and at the same time provides installation interfaces, making it convenient to connect with other components of the fuel system. Functions ● Emergency fuel cut-off: In case of emergency situations of the vehicle, such as collisions, engine failures, etc., the fuel cut-off solenoid valve is de-energized through relevant signals to quickly cut off the fuel supply, preventing safety accidents such as fires caused by fuel leakage. ● Normal operation control: Under different working conditions of the engine, such as starting, idling, accelerating, and decelerating, according to the instructions of the electronic control unit (ECU), it precisely controls the supply and cut-off of the fuel to achieve the best performance and fuel economy of the engine, while reducing exhaust emissions. The fuel cut-off solenoid valve is usually composed of components such as an electromagnetic coil and a valve core. When the electromagnetic coil is energized, a magnetic field will be generated, attracting the valve core to move, opening the fuel passage so that the fuel can pass through normally; when the electromagnetic coil is de-energized, the magnetic field disappears, and the valve core resets under the action of the spring force and other forces, closing the fuel passage, thus cutting off the fuel supply.
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Hubei Jinxiangyin Technology Co., Ltd.
Hubei Jinxiangyin Technology Co., Ltd. is a major unit participating in formulating industry standards for engine electrical components. In 2022, it passed the ISO/9001:2002 certification for automotive products, and in 2005, it passed the ISO/TS16949:2002 quality management system certification. The enterprise has established three major departments, namely the Automotive Electronics and Electrical Department, the Mechanical Operation Department, and the Tooling and Mould Design and Development Department, and it has complete conditions for product design, development, and manufacturing. The Automotive Electronics and Electrical Department focuses on the production of sensors for engine oil pressure, water temperature, rotational speed, oil level, water level, etc., as well as various mechanical small gauges, main power switches, and a full range of products such as engine shutdown devices, throttle drivers, and starting relays, which are used as supporting products for engines of Dongfeng Commercial Vehicles, Dongfeng Cummins, Guangxi Cummins, Weichai Power Co., Ltd., Yuchai Machinery, Yuchai Power, Lonking (Shanghai), Beijing Internal Combustion Engine Works (Tianjin), Yituo (Yangdong), Chongqing Zongshen Electric Vehicles, and other brands.
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Production line of fuel level sensor
Production line of fuel level sensor
The production line of the fuel level sensor is a combination of a series of equipment and processes used for manufacturing the fuel level sensor. The following is the relevant introduction to it:
2025-05-12
Production line of electronic pressure sensor
Production line of electronic pressure sensor
The production line of electronic pressure sensors is a professional production line used for manufacturing electronic pressure sensors. The following is the relevant information about it:
2025-05-12
Production line of engine oil pressure sensor
Production line of engine oil pressure sensor
The production line of the engine oil pressure sensor is a combination of a series of equipment and technological processes specially designed for the production of engine oil pressure sensors. The...
2025-05-12
Production line of fuel cut-off solenoid valve
Production line of fuel cut-off solenoid valve
The production line of the fuel cut-off solenoid valve is a combination of a series of equipment and processes used for the production of fuel cut-off solenoid valves. The following is its relevant...
2025-05-12
It is mainly a formulating unit of the industry standards for engine electrical components.

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矢量智能对象.png　News and information related to the fuel cut-off solenoid valve

矢量智能对象_13.png　Tianjin Dachuang Technology Obtains Patent for Small-sized and Low-flow-resistance Engine Oil Solenoid Valve: According to the news from JRJ.com on May 2, 2025, Tianjin Dachuang Technology Co., Ltd. has obtained the patent for the "Small-sized and Low-flow-resistance Engine Oil Solenoid Valve" (Authorization Announcement No. CN 222798270 U). While achieving miniaturization in volume, this patent has achieved the effects of low flow resistance and large flow rate. It is easy to assemble and reduces the manufacturing cost.

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矢量智能对象.png　Why does the sensor fail?

矢量智能对象_13.png　Physical Damage and External Force Impact: During the installation, use or transportation process, the sensor may be impacted by external forces such as collisions and drops. This may cause damage to the internal sensitive components, circuits and other structures, resulting in the sensor being unable to work properly.

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矢量智能对象.png　Installation methods of various sensors

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Fuel Quantity Sensor

Installation Location: Generally, it is installed inside the fuel tank and installed through the openings on the top or side of the fuel tank. In some vehicles, the fuel quantity sensor is integrated into the fuel pump module and installed together inside the fuel tank.


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矢量智能对象.png　News and information related to fuel - cut solenoid valves

矢量智能对象_13.png　Tianjin Dachuang Technology Co., Ltd. has obtained the patent for the "Small-sized and Low-flow-resistance Engine Oil Solenoid Valve": According to the news from JRJ.com on May 2, 2025, Tianjin Dachuang Technology Co., Ltd. was granted the patent for the "Small-sized and Low-flow-resistance Engine Oil Solenoid Valve" (Authorization Announcement No. CN 222798270 U). While achieving miniaturization in volume, this patent has achieved the effects of low flow resistance and large flow rate. It is easy to assemble and has reduced the manufacturing cost.‍

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