Launch X431 Scopebox - Page 93

LAUNCH X431 GDS Scopebox Manual
Fig.4-2
1) Contact break point: the primary circuit of ignition coil cut off, the
secondary voltage was sensed and increased sharply
2) Ignition voltage: secondary coil voltage overcome the damper of
high voltage lin
e, the contact breaker gap and the spark plug gap
to release magnetizing energy, 1-2 section is the breakdown
voltage;
3) Spark voltage: For the capacitor discharge voltage;
4) Ignition voltage pulse: For the charge and discharge sections;
5) Spark line: The inductance discharge process, i.e. the mutual
inductan
ce v
oltage of ignition coil maintains the conduction of
secondary circuit;