Method for controlling a turbocharger using a physical model...

Details Method for controlling a turbocharger using a physical model... Method for controlling a turbocharger using a physical model...

2008-09-26

2011-12-20

Vo, Hieu T (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C060S602000

Reexamination Certificate

active

08082091

ABSTRACT:
A method for controlling a turbocharger using a physical model of the turbocharger speed is disclosed with an application for controlling an internal-combustion engine. A setpoint pressure corresponding to a fluid pressure in the engine intake manifold is converted to a desired speed value. A physical relation connecting the turbocharger speed to a pressure ratio of the fluid flowing into and out of the turbine is then defined. A desired pressure ratio for the fluid flowing into and out of the turbine is deduced therefrom. A turbine actuator control law is estimated by mapping the turbine, from a measurement of the fluid flow rate flowing into the turbine and from the desired ratio of the pressures in the turbine. Finally, the control law is applied to the turbine actuator so that the pressure in the intake manifold is equal to the setpoint pressure.

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patent: 2003/0101723 (2003-06-01), Birkner et al.
patent: 1 586 756 (2005-10-01), None
patent: 2 898 156 (2007-09-01), None
patent: 2922596 (2009-04-01), None

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