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US 2010/0147240 A1Published application
Method of starting spark-ignition direct injection (sidi) engines
AssigneeGM Global Technology Operations LLC
InventorsJesse M. Gwidt, Michael N. Kotsonas, Robert X. Monchamp, Karen Margaret-Bell Gwidt
Life of this patent
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Abstract
A cold start control module for a direct injection engine includes a fuel flow determination module and a cylinder activation/deactivation module. The fuel flow determination module determines a requested fuel flow. The cylinder activation/deactivation module deactivates at least one of cylinders when the requested fuel flow exceeds a maximum fuel flow of the fuel pump during cold start.
Claims16
A cold start control module for a direct injection engine comprising:
- a fuel flow determination module that determines a requested fuel flow;
- and
- a cylinder activation/deactivation module that deactivates at least one of a plurality of cylinders in response to a determination that the requested fuel flow exceeds a maximum fuel flow of a fuel pump during cold start.
A method of starting a direct injection engine comprising:
- determining a requested fuel flow;
- and
- deactivating at least one of a plurality of cylinders in response to a determination that the requested fuel flow exceeds a maximum fuel flow of the fuel pump during cold start.
Dependencies are inferred from the claim text.