Phaser control systems and methods for balancing mean effective pressure
AssigneeGM Global Technology Operations LLC
InventorsJoshua D. Cowgill, Joel Cowgill
Life of this patent
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Abstract
An engine control system includes a mean effective pressure (MEP) module, an imbalance module, and a phaser control module. The MEP module determines MEPs for combustion cycles of cylinders, respectively, of an engine. The imbalance module selectively determines whether first and second banks of the cylinders are imbalanced based on the MEPs. When the first and second banks of cylinders are imbalanced, the phaser control module selectively adjusts at least one of: a first phaser of an intake camshaft of the second bank of cylinders; and a second phaser of an exhaust camshaft of the second bank of cylinders.
Claims20
An engine control system comprising:
- a mean effective pressure (MEP) module that determines MEPs for combustion cycles of cylinders, respectively, of an engine;
- an imbalance module that selectively determines whether first and second banks of the cylinders are imbalanced based on the MEPs;
- and
- a phaser control module that, when the first and second banks of cylinders are imbalanced, selectively adjusts at least one of:
- a first phaser of an intake camshaft of the second bank of cylinders;
- and
- a second phaser of an exhaust camshaft of the second bank of cylinders.
An engine control method comprising:
- determining mean effective pressures (MEPs) for combustion cycles of cylinders, respectively, of an engine;
- selectively determining whether first and second banks of the cylinders are imbalanced based on the MEPs;
- and,
- when the first and second banks of cylinders are imbalanced, selectively adjusting at least one of:
- a first phaser of an intake camshaft of the second bank of cylinders;
- and
- a second phaser of an exhaust camshaft of the second bank of cylinders.
Dependencies are inferred from the claim text.