US PATENT SUBCLASS 123 / 578
.~.~ Fuel switched in response to engine temperature

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}
578.~.~ Fuel switched in response to engine temperature

DEFINITION

Classification: 123/578

Fuel switched in response to engine temperature:

(under subclass 575) Subject matter in which means are provided for switching from one fuel source to another in response to a temperature of the associated engine.