iSmartINC 402 Injector Cleaner & Tester User’s Manual
5
Installing and testing procedures for
top-supply injectors
1)
Choose a adaptor for fuel top-supply injector according
to the injector type and mount it to the corresponding
coupler under the fuel distributor.
2)
Install the injectors in forward direction (Apply a little
lubricating oil on the O-ring.)
3)
Install the top-supply fuel distributor and the injector on
the fuel distributor supporter with a proper adjustable
screw and knurled nuts, and tighten two riffle screws
(black). See Fig. 04.
4)
Connect the injector pulse signal wire.
5)
Before doing this test, press [Drain] button to drain the
test liquid from the measuring cup if there is any.
6)
Choose [Uniformity/Sprayability test] on the control panel,
set corresponding parameters (consult the appendix for
pressure setting, consult vehicle manuals for other
parameters as needed), and then press [Run] button to
start the test. (iSmartINC 402 can switch between
[Uniformity test] and [Sprayability test] by pressing [Drain]
key when it is running or press the
［ ］
key then press
run key the system pressure will come back to the
default pressure value When the function of item section
is working)
7)
When the test is completed, iSmartINC 402 will auto stop
at the ring of the buzzer.
Fig. 04
1-Knurling screw 2-Top-supply fuel distributor; 3- Adapter for fuel
top-supply injector; 4-Injector; 5-Knurled nut; 6-Adjustable screw
Installing and testing procedures for
side-supply injectors
1)
Choose proper couplers for side-supply injectors and
proper O-rings, and mount them together. (Remember
to apply a little lubricating oil.)
2)
Mount the injectors on the couplers and install them
onto the fuel distributor.
3)
Mount the cross plate and tighten it with bolts.
4)
Mount the fuel distributor and injectors onto the fuel
distributor supporter, and tighten them with two riffle
screws (black). See Fig. 05.
5)
Connect the injector pulse signal wire.
6)
Before doing this test, press [Drain] button to drain the
test liquid from the measuring cup if there is any.
7)
Select [Uniformity/Sprayability test] on the control panel,
set the corresponding parameters and press [Run]
button to start the testing. (iSmartINC 402 can switch
between [uniformity test] and [sprayability test] by
pressing [Drain] key when it is running press the
［ ］
key then press run key the system pressure will come
back to the default pressure value When the function of
item section is working)
8)
When the testing is over, iSmartINC 402 will auto stop
at the ring of the buzzer.
Fig. 05
1-
Cross plate; 2-Fuel side-supply injector; 3-Coupler for fuel
side-supply injector; 4,5-O-ring; 6-Fuel distributor
Note:
1)
While testing, iSmartINC 402 can be switched
between [uniformity test] and [sprayability test]
by pressing [Drain] key. At default, solenoid
valve is set at the closed state. Uniformity test
can be done at this state. When [drain valve] key
is pressed, solenoid valve will drain oil and
sprayability test can be performed.
2)
The default cylinder number of the system is 0,
which means that all injectors are working when
iSmartINC 402 is running. A specific cylinder
can be selected by setting the number of the
cylinder.
3)
The system pressure can be adjusted by
pressing [decrease pressure] / [increase
pressure] key when testing.
4) Keep the fluid level to at least 30 ml while
testing. Foam will be produced in the liquid
during injection. In order to prevent spillover,
set the related parameter with reference to the
following formula :Pulse width(ms)
×
time(s)
×
speed(rpm) / 120
≤
18000
5) This is for checking the uniformity of each
cylinder. Injecting difference of all injectors on
one vehicle should be kept within 2% during
uniformity testing.
During operating, the user can select parameter,
such as RPM or PW, and then press
［
◄
］
or
［
►
］
key to achieve the status of the simulation.
Good injectors may have identical injecting
angle, uniform spraying but no jet. Otherwise,
replace the injector.
In the sprayability test, a special electrical
parameter--the minimum injection pulse width
of injector--can be tested, to compare the
injectors on the same engine. That is to set
cylinder No., start the test from minimum
injection pulse width, and then gradually
increases the pulse width till the injector starts
injection (observed with the help of backlight).
The value set at this moment is the minimum
injection pulse width, so the difference of
