Abstract: In an internal combustion engine control apparatus, an electronic control device is configured to subject a signal from a knock sensor to short-time Fourier transform, to thereby generate an observation matrix. Further, the electronic control device is configured to decompose the observation matrix into knocking vibration data being data on vibration caused by knocking and mechanical vibration data being data on vibration other than the knocking.

Abstract: In as internal combustion engine control apparatus, an electronic control device is configured to subject a signal from a knock sensor to short-time Fourier transform, to thereby generate an observation matrix. Further, the electronic control device is configured to decompose the observation matrix into knocking vibration data being data on vibration caused by knocking and mechanical vibration data being data on vibration other than the knocking.

Abstract: A control device for an internal combustion engine includes an information acquirer, a first computing unit, and a second computing unit. The information acquirer acquires information on a state amount that changes depending on the operation state of the internal combustion engine. A region determiner determines whether the state amount falls within a set region. The first computing unit uses an in-region state amount within the set region, as an input value to compute a control amount of the internal combustion engine by a neural network. The second computing unit selects a reference state amount within the set region, based on the out-of-region state amount, uses the selected reference state amount as an input value to compute a reference control amount by the neural network, and computes the control amount corresponding to the out-of-region state amount based on the computed reference control amount.

Abstract: A control device for an internal combustion engine includes an information acquirer, a first computing unit, and a second computing unit. The information acquirer acquires information on a state amount that changes depending on the operation state of the internal combustion engine. A region determiner determines whether the state amount falls within a set region. The first computing unit uses an in-region state amount within the set region, as an input value to compute a control amount of the internal combustion engine by a neural network. The second computing unit selects a reference state amount within the set region, based on the out-of-region state amount, uses the selected reference state amount as an input value to compute a reference control amount by the neural network, and computes the control amount corresponding to the out-of-region state amount based on the computed reference control amount.

Abstract: A device for controlling the fuel pressure in a direct cylinder fuel injection engine, which suppresses the over-shooting or under-shooting of fuel pressure under a condition in which the fuel pressure is changing, in order to improve the response and stability. A control means 20A controls the fuel pressure by feedback so that a real fuel pressure PF comes into agreement with a target fuel pressure PFo, and includes a means 204 for operating the fuel pressure correction amount for variably setting a control gain for controlling the fuel pressure by feedback, the means for operating the fuel pressure correction amount so working as to change the control gain when the target fuel pressure has changed by more than a predetermined amount from a first control gain for when the fuel pressure remains steady over to a second control gain for when the fuel pressure changes.

Abstract: A control apparatus for an internal combustion engine comprises: driving state detecting means for detecting a driving state of the internal combustion engine based on detected information from various sensors; control calculating means for calculating a control parameter of the internal combustion engine in accordance with the driving state; combustion state detecting means for detecting a combustion state amount of at least one of cylinders of the internal combustion engine; fuel property calculating means for calculating a property of a fuel supplied to the internal combustion engine based on the driving state and the combustion state amount; and parameter correcting means for correcting the control parameter in accordance with the fuel property.