An electro-mechanical device that produces high tension from revolving coils in the field of a powerful magnet, used to power the spark plugs in a simple petrol internal combustion engine.



Related Terms

DISTRIBUTOR

A rotating mechanism for internal combustion engines, to distribute high tension electricity to the spark plugs. It houses the cam- operated breaker points for the primary circuit.

CHECKERBOARD REGENERATOR

An open checker work arrangement of firebrick in a high temperature chamber that absorbs heat during a batch processing cycle, then releases it to preheat fresh combustion air during the down cycle; used, for example, in the steel industry with open-hearth and heat-treating furnaces.

DERATING

The reduction of the rating of a device to improve reliability or to permit operation at high ambient temperatures.

WINCH

A device used to increase hauling power when handling mooring ropes, raising or trimming sails etc.

DIAMOND-ANVIL CELL

A device for generating an extremely high pressure in a sample that is sandwiched between two diamond anvils to which forces are applied.

AUTO-IGNITION TEMPERATURE

The lowest temperature to which a liquid or gas requires to be raised to cause self-sustained spontaneous combustion without ignition by a spark or flame.

CROWBAR

  1. An iron or steel bar that is usually bent and has a wedge-shaped working end; used as a lever and for prying. 2. A device or action that in effect places a high overload on the actuating element of a circuit breaker or other protective device, thus triggering it.

TANK CLEANING MACHINE

A sprinkler like device which is used with high pressure to clean the inside of cargo tanks. One famous brand name is 'butterworth'. Therefore when a tank is butterworthed it is being cleaned.

CONTROLLED AVALANCHE DEVICE

A semiconductor device that has rigidly specified maximum and minimum avalanche voltage characteristics and is able to operate and absorb momentary power surges in this avalanche region indefinitely without damage.

CENTRIFUGAL MOLECULAR STILL

A device used for molecular distillation; material is fed to the center of a hot, rapidly rotating cone housed in a chamber at a high vacuum; centrifugal force spreads the material rapidly over the hot surface, where the evaporable material goes off as a vapor to the condenser.

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