US PATENT SUBCLASS 123 / 698
.~.~ With addition of secondary fluid (e.g., fuel or exhaust gas)

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

434  DF  CHARGE FORMING DEVICE (E.G., POLLUTION CONTROL) {29}
672  DF  .~ Including exhaust gas condition responsive means {11}
698.~.~ With addition of secondary fluid (e.g., fuel or exhaust gas) {1}
699  DF  .~.~.~> Secondary fluid is auxiliary air or oxygen (e.g., carburetor air bleed) {1}

DEFINITION

Classification: 123/698

With addition of secondary fluid (e.g., fuel or exhaust gas):

(under subclass 672) Subject matter wherein means is provided to add an additional fluid to the combustible mixture produced by the charge forming device before the mixture is fed to the engine cylinders.

SEE OR SEARCH THIS CLASS, SUBCLASS:

217, for rotary-type internal combustion engines having charge forming devices with exhaust gas recirculation.

568.11+, for charge forming devices wherein at least some of the exhaust gas products are added to the combustible mixture.

SEE OR SEARCH CLASS

701, Data Processing, Navigation, and Relative Location,

108+, for control means for internal-combustion engines including specific computer or data processing details and exhausted gas recirculation.