Launch X431 Scopebox User Manual

LAUNCH X431 PAD Scopebox User’s Manual
Fig. 4-1
1) Contact break point: the primary circuit of igniti
on coil cut off, the
secondary voltage was sensed and increased sharply
2) Ignition voltage: secondary coil volta
ge overcome the damper of high
voltage line, 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 induct
ance
voltage of ignition coil maintains the conduction of secondary circuit
6) Contact point close the current flow into
primary coil, the primary coil
oscillates due to the mutual inductance.
Primary ignition waveform
Section
a shows the voltage oscillation on the primary circuit due to the
magnetic induct
ion of spark in the duration;
Section b shows the damped oscillation genera
ted by remaining magnetic field
18

Launch X431 Scopebox Specifications

General

Brand	Launch
Model	X431 Scopebox
Category	Test Equipment
Language	English