AM.III.H.K3
KnowledgeShower of sparks and impulse coupling.
From the FAA library
- Chapter 4: Engine Ignition & Electrical Systems › Auxiliary Ignition Units
following types of auxiliary starting systems: booster coil (older style), starting vibrator (sometimes called shower of sparks), impulse coupling, or electronic ignition systems. During the starting cycle, the engine is turning very slowly compared to normal speed. The ignition must…
- Chapter 4: Engine Ignition & Electrical Systems › Auxiliary Ignition Units › Impulse Coupling
coupling. High-Tension Retard Breaker Vibrator To provide for more spark power during the starting cycle, the shower of sparks system was developed, which provides several sparks at the spark plug electrodes during starting. The starting vibrator, or shower ... sparks, consists essentially of an electrically operated vibrator, a condenser, and a relay. [Figure 4-37] These units are mounted on a base plate and enclosed in a metal case. Figure 4-34. Impulse coupling on a magneto. Figure…
- Chapter 4: Engine Ignition & Electrical Systems › Auxiliary Ignition Units › High-Tension Retard Breaker Vibrator
rapid successions of separate voltages induced in the secondary coil produces a shower of sparks across the selected spark plug air gap. The retard breaker magneto and starting vibrator system is used as part of the high-tension starting system ... aircraft. Designed for four- and six-cylinder ignition systems, the retard breaker magneto eliminates the need for the impulse coupling in light aircraft. This system uses an additional breaker to obtain retarded sparks for starting. The starting vibrator is also…