1/2GGD-SS16,16 nozzle,GD full cone spray nozzle

【YBS Nozzle】offer1/2GGD-SS16,16 nozzle,GD full cone spray nozzle and other products.Tel:86-0769-81609791

Measurement and analysis of diesel nozzle internal pressure fluctuations

This study describes the experimental test device test device used in the experiment include the high-pressure fuel injection system, high pressure high temperature and pressure constant volume device acquisition system . The following will be introduced separately .

?High-pressure fuel injection system used in the experiment is a high pressure fuel injection system designed and developed fuel injection system with pressure amplification device. High oil system consists of motor, gear pump , low pressure oil accumulator , relief valves, supercharger , turbocharger solenoid valve, the high pressure , electronically controlled injector rail pressure sensors and other components. Low pressure in the vessel is adjusted by the relief valve when the pressure in the vessel is greater than the low-pressure setting , a hair spray diesel

Mouth instability mechanism of cavitation jet atomization process and its impact on research valve outlet flow back to the tank. Connected to the low pressure oil accumulator capable of receiving and releasing energy fluctuations of oil , to keep the pressure from the stabilizing effect . Fuel injection system booster injection pressure amplification can be achieved in the area ratio of the supercharger under the effect of the differential piston 10.5 , experiment injection pressures up to 240 MPa. Pressure solenoid valve directly driven by a 48V DC power supply . Electronically controlled fuel injection developed by our group FIRCRI using high-voltage controlled injector . In order to achieve fast response , the electronically controlled fuel injection uses 110V DC voltage drive . 110V driving voltage by a self-developed DC-DC step-up module

24V DC power supply voltage rises from. In addition, the on-off control of the injector coil switch must have a high-speed response characteristics of the system used in the N-channel power devices IXYS IXFH58N20 as a power -driven actuator , open the device's response time <50 ns, which shut off time <200 ns. Experiments, particularly the nozzle hole machining , wherein the aperture of the nozzle holes 0.18 mm, pore pressure measurement holes is 1.5 mm ( with a pressure sensor for determining the pore size with good ) . Spray orifice and pressure measurement holes are punched using EDM machining mode . In order to adverse effects in the process of the formation of burrs and iron needle movement and resulting fuel flow to maximize the elimination , into the hole after the machining of the parts of the fine processing , and to the nozzle channel of a comprehensive thorough high pressure water cleaning. As can be seen , the internal pressure measurement points hair very close to the nozzle spray orifice upstream pressure chamber (sac chamber) In addition , the control signal electronically controlled fuel injection , turbocharger solenoid valve timing card PS2401 controlled by software in Intel 8253 timer generates , through the generic Array Logic GAL20V8 logic synthesis.

Ordering information of 1/2GD full cone spray nozzle(YBS Brand)

Materials:None=brass                                   I=mild steel                   SS=303stainless steel

1/2 1/2GGD-16                                 1/2GGD-I16             1/2GGD-SS16

1/2GGD-25                                 1/2GGD-I25      1/2GGD-SS25