Automotive machinery origin
- Commodity name： Automotive machinery origin
- Commodity ID： 1191888394737307648
Category:
Keywords:
A vehicle-mounted mechanical fuel shutoff device, comprising a valve body, an inlet port, an outlet port, and a spool-type plunger for opening and closing the fuel passage. The inlet port is provided at the lower end of the upper valve body, the outlet port at the upper end, and a return oil port in the middle of the upper valve body. The spool-type plunger, driven by gear rotation to move laterally, is equipped with a two-stage seal at its left end.
Product Details
A vehicle-mounted mechanical fuel shutoff device comprises a valve body, an inlet port, an outlet port, and a rack-and-pinion spool for opening and closing the fuel passage. The inlet port is located at the lower end of the upper valve body, the outlet port at the upper end, and a return oil port in the middle section of the upper valve body. A gear-driven, laterally reciprocating rack-and-pinion spool is employed, with a double-seal arrangement at its left end. Its advantages include a simple, scientifically sound, and innovative design; convenient operation; easy adjustment; and reliable performance. The use of a rack-and-pinion spool ensures no fuel leakage, while enabling the device to withstand the substantial suction force of diaphragm-type fuel pumps and the high pressure of electronic fuel injection pumps. The device is durable and long-lasting, driven by a motor-gear assembly that delivers high torque, smooth rotation, and precise, dependable on/off control. Moreover, when the fuel passage is shut off, the device can relieve and reduce the pressure in the fuel line. For enhanced safety, it utilizes a dedicated 6V DC motor, which enables reliable on/off control of the vehicle’s fuel system and effectively prevents unauthorized use of the vehicle by non-driver individuals.
Technical Field
This utility model pertains to an automotive fuel-line shut-off device, specifically a mechanical fuel-cut-off valve for vehicles.
Background Art
Currently, most cars on the market—and those in everyday use—lack any truly effective anti-theft devices, resulting in frequent thefts of vehicles parked on the roadside or in front of and behind homes. The usual countermeasures involve disabling the fuel system and electrical circuits to prevent unauthorized starting. However, as long as thieves use specialized tools to restore these systems, they can easily regain control of the vehicle and resume driving, which is why car theft remains a persistent problem.
Summary of the Invention
The objective of this utility model is to address the aforementioned problems by providing a vehicle-mounted mechanical fuel shutoff device that can be integrated with automobiles. This device uses an electric motor to drive a rack-and-pinion plunger assembly to open and close the fuel circuit, thereby controlling the flow of fuel. It reliably achieves on-off control of the fuel circuit and can also relieve pressure in the fuel system, thus protecting the fuel pump and ensuring its normal operation.
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