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US 2009/0260603 A1Published application
System and method for controlling a supercharged engine with inlet and port throttle
AssigneeGM Global Technology Operations LLC
InventorJohn R. Bucknell
Life of this patent
Estimating the term…
Abstract
A method and system for controlling an engine with a supercharger includes a bypass valve control module controlling a bypass valve for the supercharger having a bypass flow area in response to a desired manifold absolute pressure, an inlet valve control module controlling an inlet throttle for a supercharger in response to a bypass flow area and a port throttle control module controlling a port throttle in response to the desired mass airflow.
Claims20
A method for controlling an engine with a supercharger comprising:
- determining a desired airflow for the engine;
- determining a desired manifold absolute pressure;
- controlling a bypass valve for the supercharger having a bypass flow area in response to the desired manifold absolute pressure;
- controlling an inlet throttle for the supercharger in response to the bypass flow area;
- and
- controlling a port throttle in response to the desired airflow.
3 more elements
A method for controlling an engine with a supercharger comprising:
- determining a desired airflow to an engine;
- determining a desired exhaust gas recirculation flow for the engine;
- determining a total desired inlet airflow based on the desired airflow and the exhaust gas recirculation flow;
- determining a pressure ratio change based on the total desired inlet flow;
- controlling a bypass valve in response to the pressure ratio change;
- controlling the inlet throttle in response to a bypass flow area;
- and
- controlling a port throttle valve in response to the total desired inlet flow.
5 more elements
A control system comprising:
- a bypass valve control module controlling a bypass valve for the supercharger having a bypass flow area in response to a desired manifold absolute pressure;
- an inlet valve control module controlling an inlet throttle for a supercharger in response to the bypass flow area;
- and
- a port throttle control module controlling a port throttle in response to the desired mass airflow.
1 more element
Dependencies are inferred from the claim text.