Appeal No. 1998-1133
Application 08/382,296
temperature of the exhaust gases has been raised to a
temperature to ignite the catalyst within the catalyst bed of
the catalytic converter (abstract; col. 1, lines 31-33; col.
6, lines 14-18).
Säufferer discloses a method for treating exhaust gases
of an internal combustion engine (col. 1, lines 23-25). When
the engine is started, a bypass (5) around a quick-warm-up
catalytic unit (which corresponds to the appellants’ igniter)
is closed (col. 4, lines 73-74). However, a valve (7) is
opened increasingly by a heat sensitive device (12) in a
downstream catalytic converter unit (4) as soon as the
catalytic converter unit reaches its response temperature,
until the largest portion of the exhaust gases bypasses the
quick-warm-up catalytic unit (col. 3, lines 66-71; col. 4,
lines 18-23; col. 4, line 73 - col. 5, line 3). The catalyst
in the quick-warm-up catalytic unit increases the temperature
of the exhaust gases passing through it (col. 3, lines 52-62).
The exhaust gases from the quick-warm-up catalytic unit are
passed to the catalytic converter after the temperature of the
exhaust gases has been raised to a temperature to ignite the
catalyst within the catalyst bed of the catalytic converter
9
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 Next
Last modified: November 3, 2007