US PATENT SUBCLASS 123 / 587
.~.~ Oxidant controlled by intake manifold vacuum

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

434  DF  CHARGE FORMING DEVICE (E.G., POLLUTION CONTROL) {29}
585  DF  .~ Auxiliary air or oxygen added to combustible mixture {3}
587.~.~ Oxidant controlled by intake manifold vacuum

DEFINITION

Classification: 123/587

Oxidant controlled by intake manifold vacuum:

(under subclass 585) Subject matter in which the means for providing additional oxidant is controlled in response to the pressure in the engine intake manifold.