초록 ▼

A control device for an internal combustion engine comprising a knocking detecting means and an operating and controlling means which generates a feedback control signal in response to a knocking detection signal from the knocking detecting means and which feedback controls ignition timing, etc. so

A control device for an internal combustion engine comprising a knocking detecting means and an operating and controlling means which generates a feedback control signal in response to a knocking detection signal from the knocking detecting means and which feedback controls ignition timing, etc. so as to maintain the firing condition of the engine in optimum condition. The control device further comprises an acceleration detector, the output signal of which controls the knocking detecting means or the operating and controlling means in such a manner that said feedback control signal is amplified to a greater extent in the accelerating condition than in the normal condition, as a result of which the ignition timing, etc. is feedback controlled more quickly in the accelerating condition than in the normal condition, so that the firing condition is maintained in optimum condition even in the accelerating condition.

대표청구항 ▼

A control device for an internal combustion engine comprising: a sensor for detecting pressure variations in a combustion chamber of the engine or vibrations resulting from the pressure variations; first detecting means for detecting a knocking state produced in the engine from the output signal of

A control device for an internal combustion engine comprising: a sensor for detecting pressure variations in a combustion chamber of the engine or vibrations resulting from the pressure variations; first detecting means for detecting a knocking state produced in the engine from the output signal of said sensor and for producing a knocking detection pulse signal; operating and controlling means for generating a control signal in response to the knocking detection signal from said first detecting means and for feedback controlling, in response to said control signal, at least one of ignition timing, exhaust gas recirculation flow rate, fuel injection amount and fuel injection timing as control variables, said operating and controlling means further being operable to generate a voltage signal which decreases in amplitude at a predetermined rate in response to said knocking detection pulse signal and then gradually increases at a predetermined rate lower than said decreasing rate and controls at least one of said control variables in proportion to the value of said voltage signal at trailing edge of an ignition command pulse synchronized with the rotation of the crank shaft; second detecting means for detecting a transitional driving condition of the engine; and means for varying the gain factor of said feedback control in response to the detection signal from said second detecting means.