Definition

Noun: A magnetoelectric machine is a small dynamo (an electrical generator) that uses a secondary winding to produce a high-voltage electrical current. This high voltage is specifically designed to create a spark across the gap of a spark plug in a gasoline engine, which ignites the fuel-air mixture.

Usage

This term is a technical, historical term for a specific component in early internal combustion engines. It describes the device that generated the ignition spark before the widespread adoption of distributor-based ignition coils. * The early model relied on a magnetoelectric machine to fire its spark plugs. * Restoring the vintage car required finding a replacement magnetoelectric machine.

Advanced Usage

• The term is largely obsolete in modern automotive engineering, having been replaced by more efficient and reliable solid-state ignition systems. It is primarily encountered in historical, restoration, or academic contexts discussing the evolution of engine technology.

Variants and Related Words

• Magneto (n.): This is the common abbreviated form and synonym for "magnetoelectric machine." It is a self-contained generator that uses permanent magnets to produce the high voltage for ignition.
  • The aircraft's engine uses a dual magneto system for redundancy.
• Ignition magneto: A more descriptive compound term specifying the machine's function.

Synonyms

• Magneto
• Ignition magneto
• High-tension magneto

Notes on Different Meanings

• The term magnetoelectric machine is highly specific. It does not refer to general electric generators or dynamos used for power production, but exclusively to the type used for engine ignition. The core meaning is defined by its function of creating a spark for ignition.

Noun

1. a small dynamo with a secondary winding that produces a high voltage enabling a spark to jump between the poles of a spark plug in a gasoline engine