First.the characters and usage of the tester

    The injection valve tester -  YPJ-40 serise has the following features:high speed in  pressusre increase ,good constant voltage, rational construction,flexible operation,convenient clamping,which is the perfect  instrument to test the diesel injectors’ starting pressure /the quality of nebulization,the angle of injection and the Airtight of the needle valve.

Second .main technicle parameters

value of the gauge: 0-40Mpa
overrall dimension : 320×290×500(length×wideth×height)
the capacity of the oil tank : 3.5L

net weight : 30Kg

Third.application and  adjustment

Before using the tester ,we should check whether it is fixed firmly.then the working environment should be tidy.the tester especiallly the clamping injectors’joints should be clean, then add 0# oil that has been deposited for more than 48 hours ,don’t use unqualified diesel.
 

1, the starting  pressure  testing of the fuel valve assembly

Put the injector in the middle of the Bracket and aim at the injection connection

,rolling the screw in the Bracket, fix the fuel valve assembly,check the airtight of the installing
 

2. the angle of the fuel injector assembly .the injectors angle’s test can be carried out after the adjustment of the starting pressure of the injector.On the point H ,put a white paper or a piece of iron wire cloth with grease,then note the number of the injection,when we can see the  injection circle or there is a vacant circle in the iron wire cloth,mesure the distance between the  mouth of fuel injector assembly and the iron wire cloth(paper),as well as the diameter of the circle.Then calculate the angle’ a’ of the atomization according to the following equation:
     tg  a/2=2H
 

3. atomisation experiment

Press the pressure shaft to start injection,then oberserve the atomisation condition of the injector.The atomisation oil particle should be minutely,well-dstributed ,without oil flow that can be seen,After the end of the injection,there is no oil drop remained or the phenomenon of oil drop.

Fourth.maintaining

1.       the testing oil must be the 0# light diesel or  testing oil that has been deposited for 48 hours.when adding oil,the oil should be filtered  with silk cloth .

2.        clean it before using,put on the Force Shield after finishing

3.        roll the screw fixing injector assembly,don’t roll over exert for fear of burning the fiber

4.        shoult check the pressure gauge periodically(haff year)