Appeal 2007-0571
Application 10/277,004
prevent backflow from the intake manifold and backflow
from the first divided exhaust manifold from entering the
second divided exhaust manifold.
16. A method comprising the steps of:
receiving, at boost pressure, a flow comprising air and
exhaust gas at a plurality of cylinders into a first divided
exhaust manifold;
expelling exhaust gas from a second subset of the
plurality of cylinders into a second divided exhaust
manifold, wherein the first subset and the second subset
are different;
receiving, by an exhaust gas recirculation (EGR) system
at an EGR inlet, a part of the exhaust gas from the first
divided exhaust manifold and a part of the exhaust gas
from the second divided exhaust manifold;
when the boost pressure is higher than exhaust pressure
at one or more of the first divided exhaust manifold and
the second divided exhaust manifold, inhibiting all
backflow from entering the first divided exhaust
manifold and the second divided exhaust manifold.
THE REJECTIONS
The Examiner relies upon the following as evidence of unpatentability:
Faletti US 6,408,833 B1 Jun. 25, 2002
Bailey US 6,598,396 B2 Jul. 29, 2003
Sumser US 6,694,735 B2 Feb. 24, 2004
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