US PATENT SUBCLASS 60 / 291
.~.~.~ Of or by pressure in reactor or of engine exhaust

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}
291.~.~.~ Of or by pressure in reactor or of engine exhaust {2}
292  DF  .~.~.~.~> Valve at reactor outlet controlled
293  DF  .~.~.~.~> Check valve feeds air to exhaust system

DEFINITION

Classification: 60/291

(under subclass 287) Apparatus in which there is (1) a means controlling the pressure in the reactor or in the exhaust gas being fed to the reactor; or (2) a means sensing the pressure in the reactor or of the exhaust gas being fed to the reactor and controlling an element of the apparatus.