Abstract: A control device for an internal combustion engine provided with an intake air pressure sensor and an airflow meter includes a calculation unit for calculating a fuel injection quantity on the basis of a negative pressure of intake air measured by the intake air pressure sensor when a cranking motor starts cranking the internal combustion engine, and a switching unit for switching to calculation of the fuel injection quantity on the basis of an intake air flow rate measured by the airflow meter when a change value in an actual intake air quantity becomes smaller than a reference value.

Abstract: In a predetermined exhaust gas recirculation (“EGR”) region, an exhaust gas recirculation control device performs control to recirculate a portion of exhaust gas of an internal combustion engine to a suction passage through an EGR passage in which an EGR valve is provided. If it is detected that a fuel cut recovery condition is satisfied after a fuel cut condition is satisfied, the EGR valve is closed from when the fuel cut recovery condition is satisfied until fuel gas is detected in an exhaust gas passage that leads from a combustion chamber to an inlet of the EGR passage.

Abstract: A control device for an internal combustion engine includes a unit for performing precorrection of an intake air quantity immediately after engine startup on the basis of a change value in the intake air quantity immediately after the beginning of cranking, and a correction method switching unit for subsequently switching to precorrection of the intake air quantity corresponding to an accelerator pedal stroke on the basis of the intake air quantity.

Abstract: A control device for an internal combustion engine provided with an intake air pressure sensor and an airflow meter includes a calculation unit for calculating a fuel injection quantity on the basis of a negative pressure of intake air measured by the intake air pressure sensor when a cranking motor starts cranking the internal combustion engine, and a switching unit for switching to calculation of the fuel injection quantity on the basis of an intake air flow rate measured by the airflow meter when a change value in an actual intake air quantity becomes smaller than a reference value.

Abstract: An internal combustion engine control apparatus basically comprises a reference intake air quantity calculating section, a maximum intake air quantity calculating section and an engine control section. The reference intake air quantity calculating section is configured to calculate a reference intake air quantity corresponding to when an intake air is taken in as a sonic flow. The maximum intake air quantity calculating section is configured to calculate a theoretical maximum intake air quantity. The engine control section is configured to control the engine by using an intake air quantity function between a first value obtained by dividing the reference intake air quantity by the maximum intake air quantity and a second value obtained by dividing an actual intake air quantity corresponding to the valve characteristics of the intake valve by the maximum intake air quantity.

Abstract: An internal combustion engine control apparatus basically comprises a reference intake air quantity calculating section, a maximum intake air quantity calculating section and an engine control section. The reference intake air quantity calculating section is configured to calculate a reference intake air quantity corresponding to when an intake air is taken in as a sonic flow. The maximum intake air quantity calculating section is configured to calculate a theoretical maximum intake air quantity. The engine control section is configured to control the engine by using an intake air quantity function between a first value obtained by dividing the reference intake air quantity by the maximum intake air quantity and a second value obtained by dividing an actual intake air quantity corresponding to the valve characteristics of the intake valve by the maximum intake air quantity.