Diesel Nozzle Tester 1.Pressure range 0-60mpa 2.Largest tested pressure 60mpa 3.Pump boby cast iron 4.Injector Tester.
1.Sagety precaution
Being operated, the nozzle tester must be far away from flame or high temperature place , such as welding and so on.
2.Purpose of the nozzle tester
It is used to adjust and calibrate the injecting pressure, atomizing quality, injecting angle and needle valve seas of nozzle of diesel ingine in order to ensure cxeelent power and economic performance of diesel engine.
3.Main technical parameter of the nozzle tester
Type | Pressure gnge range (MPa) | Overall dimensions L×W×H(mm) | Capacity of fuel tank(L) | Largest pressure Tested(MPa) | Net weight (Kg) |
NT-1 | 0~60 | 320×290×510 | 3.5 | 40 | 16 |
4.Performance of the nozzle tester
Block the joint where the nozzle is connected. Pump oil to a pressure -over 30 MPa. Then stop pump and watch the pressure descending from 30 MPa. It is less than 2 MPa. within 3 minutes.
5.Maintenance of the nozzle tester.
1.1 Calibrating fuel must be good quality light diesel deposited over 48 hours.
2.2 When filling fuel, filter it with silk-cloth, Do not fill the tank with unfiltered diesel.
3.3 Cover the tester with anti-dust cover after testing.
6.Experiment of Atomizing Quality
Watch the atomizing quality of fuel injecting. The fuel grain should be tiny, well distributed. No fuel current (or drop) seen with eyes. No obvious fuel stain appears if it is injected on the oil absorbing paper. Color of fuel stain from center to outer circle should become lighter and form well distributed
circle.Pumping fuel action should be quick. There is no fuel drop or fuel dropping after pumping fuel. Atomizing should be correct. Its taper angle should be within specified range.
7.Testing of injection Pressure of injector assembly.
Turn the injector assembly tested onto the nozzle joint tightly with high
pressure pipe, then do the experiment and adjustment of pumping fuel. When pumping fuel,watch the reading on the pressure gauge.At the same time,compare it with the specified pressure range of the injector assembly to see if it is normal. If the presure is too high or too low,adjust the pressure spring of injector assembly.
NT-1 Nozzle Tester
