Control device for an internal combustion engine

Claim 1

A control device for an internal combustion engine including means for controlling an amount of fuel supplied to a cylinder of the engine, said control device comprising: combustion pressure sensor means (16) for detecting a combustion pressure (Pc) within the cylinder of the internal combustion engine; current parameter value calculating means (19a), coupled to an output of said combustion pressure sensor means, for calculating a current value (x) of a parameter indicative of the magnitude of an output power of the internal combustion engine on the basis of the combustion pressure detected by said combustion pressure sensor means; target parameter value calculating means (19b) for continuously determining a variable target value (x T ) of said parameter in accordance with a transient state of acceleration or deceleration of the internal combustion engine; and control means (19c) coupled to said current and target parameter value calculating means, for continuously adjusting a value of a manipulated variable (y) so as to reduce a difference between said current and target values of said parameter, said manipulated variable including at least one of: an amount of supplied fuel (Ti), an ignition timing (θig), and an amount of intake air (Qa), of the internal combustion engine, wherein said target parameter value calculating means determines the target value of said parameter in accordance with a temporal rate of change of a variable selected from a group consisting of a degree of opening (α) of a throttle valve of the internal combustion engine and an amount of intake air (Qa) supplied to the internal combustion engine.