US PATENT SUBCLASS 60 / 290
.~.~.~.~ Responsive to engine speed or intake manifold pressure

Current as of: June, 1999
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60 /   HD   POWER PLANTS

272  DF  INTERNAL COMBUSTION ENGINE WITH TREATMENT OR HANDLING OF EXHAUST GAS {18}
282  DF  .~ By means producing a chemical reaction of a component of the exhaust gas {13}
287  DF  .~.~ Condition responsive control of reactor feed, pressure, or by-pass {3}
289  DF  .~.~.~ Air feed to reactor modulated or diverted by control {1}
290.~.~.~.~ Responsive to engine speed or intake manifold pressure

DEFINITION

Classification: 60/290

(under subclass 289) Apparatus in which the feed of reactive is controlled by a means responsive to the speed of the engine or to the pressure in the intake manifold of the engine.