Internal combustion engine controller

Abstract

An internal combustion engine controller enabling improved response and improved controllability of the torque produced by an internal combustion engine. The control input of an intake actuator is calculated from the required amount of air. The torque of when the intake actuator is operated according to the control input under the setting of a predetermined ignition timing is calculated. From thedifference between the calculated torque and the required torque, the amount of retard of the ignition timing needed to realize the required torque is calculated. The required amount of air is made to reflect the required efficiency in addition to the required torque. The required torque and the required efficiency may be independently determined. If the determined value of the required torque sharply increases over a predetermined amount of increase or over the increase rate, the determined value of the required efficiency is temporarily lowered in accordance with the sharp increase of the determined value of the requested torque.

Description

technical field [0001] The present invention relates to a control device for an internal combustion engine, and more specifically, relates to a control device for an internal combustion engine capable of controlling torque through operation of an intake actuator that adjusts the amount of intake air and ignition timing. Background technique [0002] Japanese Patent Application Laid-Open No. 2007-132203 discloses a technique effective for improving the responsiveness of torque generated by an internal combustion engine. According to the technology disclosed in this publication, when calculating the torque control amount for expressing the target torque, the difference between the estimated torque estimated from the target torque control amount and the target torque is used to compensate the response delay of the control according to The torque control amount is calculated by adding the target torque obtained by compensating for the difference in the response delay amount. Ac...

AI Technical Summary

Problems solved by technology

Therefore, in the case of insufficient adaptation or large deviations in the performance of the actual equipment, torque overshoot may occur due to excessively increasing the torque control amount.

If the responsiveness of the torque is insufficient, the vehicle behavior desired by the driver cannot be realized, and similarly, if the controllability of the torque is insufficient, the vehicle behavior desired by the driver cannot be realized.

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