US PATENT SUBCLASS 123 / 577
.~.~ Fuel switched, condition responsive to load

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

434  DF  CHARGE FORMING DEVICE (E.G., POLLUTION CONTROL) {29}
575  DF  .~ Diverse fuel supply {3}
577.~.~ Fuel switched, condition responsive to load

DEFINITION

Classification: 123/577

Fuel switched, condition responsive to load:

(under subclass 575) Subject matter wherein the separate fuel supplies are switched or alternated in response to the engine load condition.