Method and apparatus for controlling engine exhaust gas recirculation

The present invention relates to a method and apparatus which implements a rotary electric actuator for controlling a variable geometry turbocharger, and includes a second rotary electric actuator for controlling an exhaust gas recirculation valve in an exhaust gas recirculation system for an engine...

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Bibliographische Detailangaben
1. Verfasser: Rimnac, Phillip F
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The present invention relates to a method and apparatus which implements a rotary electric actuator for controlling a variable geometry turbocharger, and includes a second rotary electric actuator for controlling an exhaust gas recirculation valve in an exhaust gas recirculation system for an engine. The present invention provides a method and apparatus for controlling an internal combustion engine. The engine includes a variable flow exhaust gas recirculation (EGR) system. The method includes providing a variable geometry turbocharger (VGT) in communication with the EGR system for controlling exhaust gas recirculation. The geometry of the VGT is varied by adjustably controlling a rotary electric actuator (REA) operatively connected to the VGT. A position-adjustable proportional flow EGR valve is adjusted by adjustably controlling a second rotary electric actuator (REA) operatively connected to the position-adjustable proportional flow valve.