LAUNCH CNC-603A Injector Cleaner & Tester User Manual
7
V. Operation Processes
5.1 Uniformity / Sprayability Test
Uniformity test is to detect whether the differences between the injection quantities of injectors meet the
requirements or within the specified error range under the same working conditions of the injectors on the same
vehicle. The test can reflect the electrical characteristics and the change in orifice diameter of the injectors, as well
as the combine effects of the blockage and other factors on the injector. Sprayability test is to detect the
atomization performance of injectors by observing the injection condition and atomization of injectors when
operating under certain working conditions.
5.1.1 Installation Method and Test Steps for Injectors
1)
Select the appropriate connector according to the type of
injector, install the sealing ring (check if the sealing ring
of the connector is in good condition) and then mount
the connector with sealing ring at the corresponding
coupling element below the fuel distributor.
2)
Install the injector in the forward direction (apply a little
lubricant on the “O” ring of the injector).
3)
Adjust the screws to fix the fuel distributor and injector
assembly in the oil filler hole of the upper cover and
tighten the compression screws on both sides evenly. The
installation diagram is shown in Figure 5.1.
4)
Connect the pulse signal line of the injector properly. If
there is test solution in the fuel tube, press [Drain] button
to drain the test solution out of the transparent tube.
5)
As shown below: select [Uniformity / Sprayability test]
on the main interface, pressure as shown in Figure 5.2;
set corresponding operating parameters, as shown in
Figure 5.3; press [Run] button (Note: press [Drain]
button during the operation to drain or stop draining oil);
the system pressure can be adjusted by [Pressurization]
and [Depressurization] buttons on the control panel, as
shown in Figure 5.4.
6)
The system will stop automatically after
completion of the test.
Figure 5.1
1-Fuel distributor compression screw;
2-Fuel distributor assembly; 3-Connector;
4-Injector.
Figure 5.2 Figure 5.3 Figure 5.4
5.1.2 Backflushing
Backflushing is limited to the top-supply injector by connecting the backflushing connector under uniformity /
sprayability test. Test solution enters from the outlet of the injector and flows out from the inlet during
backflushing. Backflushing can wash away the dirt inside the injector and dirt attached to the filter.
Method and Steps:
1
）
Find the backflushing connector (and select a supporting “O” ring to install it on the connector) installed
below the fuel distributor;
