LAUNCH Android-based Scopebox User’s Manual
Fig. 4
-5
4.4 Waveform analysis mode
The ignition secondary single-cylinder waveform test is mainly used to:
a. Analyze the ignition dwell angle of single cylinder.(ignition coil charging
time)
b. Analyze the capability of ignition coil and secondary high tension circuit
(from ignition line to ignition voltage line).
c. Find the improper mixture A/F ratio of single cylinder (from combustion
line).
d. Analyze the capability of capacitance (platinum or ignition system).
e. Find the spark plug that causes misfire of the cylinder (from combustion
line).
This test can provide very meaningful information about the combustion quality
for each cylinder. If necessary, this test can also be performed during driving.
Since the secondary ignition waveform is significantly affected by different
engines, fuel systems and ignition conditions, it is useful for detecting the faults
To Next Page
Loading...
