US PATENT SUBCLASS 123 / 217
.~.~ Exhaust gas recirculation

Current as of: June, 1999
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123 /   HD   INTERNAL-COMBUSTION ENGINES

200  DF  ROTARY {12}
216  DF  .~ With charge treatment means {4}
217.~.~ Exhaust gas recirculation

DEFINITION

Classification: 123/217

Exhaust gas recirculation:

(under subclass 216) Apparatus wherein the treatment means consists of structure returning a portion of the combusted material to the air or fuel being delivered to the combustion space.