Patent ID: 6672060
Filing Date: 2004-01-06
Classification: F02D,Y02T

Abstract:
A method for operating an engine control system, such engine system having an intake manifold and an exhaust manifold, exhaust gas in such exhaust manifold fed to a variable geometry turbine, such turbine being connected to a compressor, such compressor feeding air to the intake manifold through an electronically controlled throttle, such variable geometry turbine being controlled by a variable geometry turbine control signal, such electronically variable throttle being controlled by a throttle control signal, such method comprising:combining a difference between an actual intake manifold pressure and a desired intake manifold pressure and a difference between an actual exhaust manifold pressure and a desired exhaust gas pressure into a composite signal to provide the variable geometry turbine control signal and the difference between the actual intake manifold pressure and the desired intake manifold pressure to produce the throttle control signal.