Control device for internal combustion engine
AssigneeMitsubishi Electric Corporation
InventorTakuo Watanuki
Life of this patent
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Abstract
A control device for an internal combustion engine includes an intake air amount controller and a variable valve controller. The intake air amount controller includes an exhaust manifold pressure calculator, an engine intake air amount calculator, a volumetric efficiency correction coefficient calculator, a cylinder intake air amount calculator, an exhaust gas flow rate calculator, and a cylinder intake air amount controller. The volumetric efficiency correction coefficient calculator calculates a volumetric efficiency correction coefficient based on a pressure ratio between an intake manifold pressure and an exhaust manifold pressure, a rotational speed of the internal combustion engine, and an actuation state of at least one of an intake valve and an exhaust valve.
Claims6
A control device for an internal combustion engine, the control device comprising:
- an engine intake air amount calculator configured to calculate an engine intake air amount being an amount of air sucked into an intake pipe of the internal combustion engine;
- an intake manifold pressure measurer configured to measure an intake manifold pressure of the internal combustion engine;
- an exhaust manifold pressure calculator configured to calculate an exhaust manifold pressure of the internal combustion engine;
- a rotational speed measurer configured to measure a rotational speed of the internal combustion engine;
- a variable valve controller configured to variably control an actuation state of at least one of an intake valve and an exhaust valve of the internal combustion engine;
- a volumetric efficiency correction coefficient calculator configured to calculate a volumetric efficiency correction coefficient for associating the engine intake air amount with a cylinder intake air amount that represents an amount of air sucked into a cylinder of the internal combustion engine from the intake pipe, based on a pressure ratio between the intake manifold pressure and the exhaust manifold pressure, the rotational speed, and the actuation state of the intake valve and the exhaust valve of the internal combustion engine;
- and
- a cylinder intake air amount calculator configured to calculate the cylinder intake air amount based on the engine intake air amount and the volumetric efficiency correction coefficient,
- wherein the control device is configured to perform fuel control and ignition control of the internal combustion engine based on the cylinder intake air amount that is calculated by using the engine intake air amount and the volumetric efficiency correction coefficient.
Dependencies are inferred from the claim text.