Kzyee KM20, Инструкция по эксплуатации и правила безопасности, Страница: 9 / 16

Multisystem Ignition Analyzer
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3.4.1 Instrument measuring functions
There is the special dedicated mode for the ignition technology of diagnosing and
troubleshooting the Coil on Plug and Coil near Plug, and using the spark plug wire
system. These dedicated modes compensate the difference in signal strength and
waveform patterns between ignition systems.
The instrument can measure the below function:
◆
Engine RPM,
◆
Spark burn time
◆
Spark KVolt (relative measurement).
3.4.1.1 Engine RPM
Measure the engine RPM in 2, 4 cycles and DIS engines, in order to evaluate the
ignition system performance in different engine speeds, it can combine the spark
burn time and spark KVolt to use.
3.4.1.2 Spark burn (firing) time
The spark burn time, also called
“firing time”, it’s the time period measurement of a
spark from ignition to extinguishing, it
’s the best measurement to indicate the ignition
system performance. The abnormal long or short burn time is likely to indicate that
there are some problems with the ignition module, spark plug, fuel mixture or cylinder
compression, etc.
3.4.1.3 Spark KVolt
The spark KVolt value is a relative measurement, it
’s used to compare the ignition
system performance in each cylinder. It can diagnostic the common problems by
comparing the spark KVolt between different cylinders, such as misfire, broken spark
plug wire, etc. But the spark KVolt values vary widely, they are inconsistent, and not
always indicate a properly working ignition system.
3.4.2 Measuring Coil on Plug and Coil near Plug ignition systems
1- Turn on the instrument.
2- Press the
“Ignition System” to select if the instrument is not already in the COP
mode.
3- Press the
“ Engine Cycles” button repeatedly to select the number of cycles for the
engine under testing, until the display shows the correct setting.
4- Select the measurement to show on the display: RPM, spark burn time and spark
KVolt.
5- Select the mode for the secondary display: the Minimum and Maximum value of
the main display or the complementary measurements.
6- Place the capacitive pick-up over one of the ignition modules, as show in Fig. 4,
search the position that produce the stable RPM or the spark burn time reading.
7- Calibrate the spark KVolt measurement first if this is the first measurement for the
engine, since this calibration value will be used as the reference value to compare
the spark KVolt reading between the coil on plug or coil near plug modules.