Appeal No. 1998-1493
Application No. 08/377,861
Samejima is directed to an exhaust gas purifier. In this
system, an air ejector (3) entrains air into the exhaust gas
flow as it leaves the combustion chamber. The gas then enters
a
purifier (5), where at least a portion flows into a catalyst
chamber (9), there to be recombusted before flowing into a
thermal reactor chamber (10), from whence it is discharged to
the atmosphere. The portion of the gas that does not flow
through the catalyst chamber (a large amount at high engine
speeds) passes directly to the thermal reactor chamber, where
it in turn is recombusted by the high temperature recombusted
gas exiting the catalyst chamber.
The exhaust gas treatment muffler disclosed by Aronsohn
comprises a passive outside air intake (12) where air is added
to the exhaust gas, a combustion chamber having an ignitor
(14) and a turbulator (15) that receives the gas/air mix and
creates "turbulence or vortex action" therein (column 2, lines
15-16), and an afterburning zone. There is no teaching in
Aronsohn that the action of the turbulator creates a low
pressure region near the muffler inlet and, since the ignitor
and a sustaining catalyst bed are located at the intake side
11
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