F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
123/98.04
F02M 25/06 (2006.01) F02M 25/07 (2006.01)
Patent
CA 1185847
EXHAUST GAS RECIRCULATION CONTROL Abstract of the disclosure In an internal combustion engine, recirculation of exhaust gases is controlled to maintain the control pressure in a zone of the recirculation passage proportional to a reference pressure and thus to provide exhaust gas recircula- lion as a proportion of induction air flow. A duty cycle modulated valve controls an exhaust back- pressure port and an atmospheric pressure port to create the reference pressure, whereby the proportion of exhaust vases recirculated is established by the duty cycle and is independent of the induction air flow.
416983
General Motors Corporation
Gowling Lafleur Henderson Llp
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