Apparatus for controlling internal combustion engine

Abstract

An engine control apparatus for controlling a control parameter of an internal combustion engine equipped with an automatic transmission using a torque converter with a lock-up clutch. The an engine control apparatus which includes a measurement part for measuring a number of cycle-by-cycle changes of torque generated in the internal combustion engine for plural operating cycles thereof, a calculation part for calculating a torque variation value on the basis of the measured cycle-by-cycle torque changes for the plural operating cycles measured by the measurement part, a parameter control part for adjusting a control parameter of the internal combustion engine so that the torque variation value calculated by the calculation part substantially agrees with a target torque variation value which is predetermined in response to an operating condition of the engine, and a detection part for generating a signal indicative of whether or not the lock-up clutch is in operation, wherein the parameter control part adjusts the control parameter of the engine based on the detection signal generated by the detection part in such a way that the target torque variation value is lowered when the lock-up clutch is in operation and the lowered target torque variation value is smaller than a target torque variation value when the lock-up clutch is not in operation.

Dependencies are inferred from the claim text.