Book Description

Excerpt from The Remy Ignition System on Aircraft Engines: Instruction Book The Remy Ignition System differs from the usual magneto system in that an external source of current supply is essential to its operation. In both systems the fundamental principles involved are identical, but in the Remy system their application is less direct. In the case of a magneto of conventional type, the armature revolves in the field of a permanent magnet, carries primary and secondary windings, and serves as a combined generator and induction coil. Low voltage current is generated in the primary winding; high voltage current is induced in the secondary winding, when the primary circuit is broken by the opening of the contact breaker points. As the secondary winding is in connection with the plugs, via the distributor and leads, a spark passes each plug in order, since the voltage immediately attains a very high value and overcomes the resistance of the gap. The path of the magnetic flux, which threads the armature windings, changes instantly when the primary circuit is broken, the change of path enhancing the induced voltage in the doubly wound armature. The magnetic field is distorted by the rotation within it of windings carrying current, but the natural path of the magnetic flux is resumed when the current fails in the primary winding. This change of path causes a very rapid cutting of the multi-turn secondary winding by the lines of force. The high voltage induced in the secondary winding of a magneto is due to several factors, including: - 1. The proportional number of primary and secondary turns wound on th3 armature core. 2. The intensity of the magnetic field in which the armature revolves. 3. The speed at which the armature is revolved. 4. The angular position of the armature in relation to the magnetic field at the moment when the contact breaker points open. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.