Spark plug microwave adapter
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United States of America Patent
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-
Mar 20, 1984
Issued Date -
N/A
app pub date -
Sep 11, 1981
filing date -
Oct 1, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An adapter for coupling microwave energy or both microwave and spark energy into the combustion chamber of a gasoline engine through the chamber spark plug comprising a sleeve adapted at one end to be tightly received over the spark plug insulator housing, and a connector carried at the opposing sleeve end and adapted for connection to a spark plug lead for transmitting spark energy to the spark plug electrodes. A microwave antenna is carried externally of the sleeve for transmitting microwave energy in a waveguide mode through the sleeve and through the insulator housing into the engine chamber while substantially bypassing the spark energy conduction path. The antenna, which may comprise a square loop antenna disposed in a plane parallel to the sleeve and spark plug axes, is adapted to be coupled to a source of microwave energy for monitoring of engine ignition events, etc.
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