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Test-bed support fuel supplying voltage-stabilizing system

A technology for fuel supply and test bench, which is applied in engine testing, machine/structural component testing, and measuring devices, etc., can solve the problems of short service life of electric fuel pumps, easy damage to built-in fuel pumps, and easy fires. Achieve the effect of compact structure, stable fuel pressure and reliable operation

Active Publication Date: 2009-07-15
NANJING AUTOMOBILE GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the electric fuel pump has a short service life and poor safety, which is easy to cause fire, while the electric fuel consumption meter is expensive, and the built-in fuel pump of the fuel consumption meter is easily damaged after long-term use.

Method used

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  • Test-bed support fuel supplying voltage-stabilizing system

Examples

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Embodiment Construction

[0019] Such as figure 1 Shown: Compressed air supply device 1 provides compressed air, enters the pneumatic pressure regulating valve 4 through the intake valve 2 through the filter 3, adjusts to a predetermined pressure value, and sends it to the pneumatic diaphragm pump 7, and the pressure gauge 5 shows the supply to the pneumatic pump 7 gas pressure. A fuel pressure stabilizing valve 9 is also provided on the outlet oil path of the pneumatic diaphragm pump 7, and is connected in parallel with the circuit formed by the hydraulic damping pipe 8 and the pressure relief port of the hydraulic pressure regulating valve 11. The external fuel is fed into the inlet of the pneumatic diaphragm pump 7 through the fuel inlet valve 6. Before the fuel output by the pneumatic diaphragm pump 7 enters the fuel damping pipe 8, if there is a peak value, a part of the fuel will flow back into the fuel tank through the fuel pressure stabilizing valve 9 to achieve a stable pressure. The other pa...

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PUM

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Abstract

The invention provides a test bench fuel supply and voltage stabilization system, which includes a fuel tank, an air source unit, and a pneumatic pressure stabilization unit. The pneumatic pressure stabilization unit includes a pneumatic pump, a pressure relief unit, and a pressure regulation unit. The fuel inlet of the pump is connected to the fuel tank through the control valve, the pressure relief unit and the pressure regulating unit are arranged on the fuel outlet oil circuit of the air pump, the fuel input of the pressure relief unit is connected to the output of the air pump, and the output of the pressure relief unit flows back to the fuel tank; One way of the fuel output of the pressure regulating unit sends out the fuel of the working pressure level, and the other way returns to the fuel tank. The invention has the advantages of compact structure, light weight, high safety, reliable operation and relatively stable output fuel pressure; the supply pressure is adjustable and can meet the demands of different engines on fuel pressure.

Description

technical field [0001] The invention relates to a fuel oil supply and pressure stabilization system, in particular to a fuel oil supply and pressure stabilization system for an engine test bench. Background technique [0002] In recent years, in order to meet the requirements of emission regulations, gasoline engines have basically adopted electronic injection technology, and diesel engines are also developing towards the goal of electronic control and common rail. In the engine emission test, the bench emission test requires fuels of different specifications, and the quality of special fuels will be reduced to varying degrees after being stored for a long time, which will eventually affect the accuracy of the engine emission test; the laboratory cannot store a large amount of special fuels, It is even more impossible to set up many fuel supply systems for fuel oils of various specifications. At present, fuel is supplied by an additional electric fuel pump; in addition, in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M15/02G01M15/00
Inventor 马剑峰万青
Owner NANJING AUTOMOBILE GROUP CORP
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