Internal Combustion Engine Control Device

Abstract: Provided is an internal combustion engine control device that can perform fuel cut control without any trouble on the basis of a signal from a crank angle sensor. An internal combustion engine control device (1) comprises an angular speed calculation unit (3) that calculates the angular speed of a crank shaft in each stroke of an internal combustion engine, and an angular acceleration calculation unit (4) that calculates an angular acceleration on the basis of two of the angular speeds that are successive chronologically, the internal combustion engine control device (1) controlling the internal combustion engine on the basis of the angular speeds and the angular acceleration. The internal combustion engine control device (1) comprises an acceleration/deceleration determination unit (6) that determines an acceleration/deceleration state of the internal combustion engine in accordance with an angular acceleration in the intake stroke immediately before a predetermined bottom dead center of the internal combustion engine, and an angular acceleration in the compression stroke immediately after the bottom dead center.

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