engine control unit

Abstract

Provided is an engine control device capable of suppressing the occurrence of stall and controlling the engine to achieve vehicle behavior in accordance with the driver's intention in consideration of switching of an operation mode from full-cylinder operation to reduced-cylinder operation and torque reduction by steering operation. The PCM (50) has: a basic target torque determination unit (51), which determines the basic target torque based on the running state of the vehicle including the operation of the accelerator pedal; The operating state of the vehicle determines the torque reduction amount; the final target torque determination part (55) determines the final target torque based on the basic target torque and the torque reduction amount; and the engine control part (57) controls the engine (10) to The final target torque is output, and the engine control unit prohibits the switching of the operation mode of the engine and the control of the engine corresponding to the change of the final target torque corresponding to the change of the torque reduction amount.

Description

technical field [0001] The present invention relates to a control device for an engine, and more particularly, to a control device for an engine that controls an engine based on an operating state of a vehicle. The ignition device control unit that controls the ignition timing of the ignition device installed in each cylinder. The engine can switch the operation mode between full-cylinder operation and reduced-cylinder operation. The full-cylinder operation refers to the implementation of air-fuel mixture in all cylinders The reduced-cylinder operation refers to stopping the combustion of the air-fuel mixture in some of the cylinders. Background technique [0002] Conventionally, when the behavior of the vehicle becomes unstable due to skidding or the like, the behavior of the vehicle is controlled in a safe direction (slip prevention device, etc.). Specifically, when the vehicle is turning or the like, it is detected whether the vehicle is understeering or oversteering, an...

AI Technical Summary

Problems solved by technology

[0010] In the above-mentioned multi-cylinder engine, the vehicle behavior control device described in the above-mentioned Patent Document 2 reduces the torque instantaneously in response to the driver's steering operation, thereby changing from the full-cylinder operation to the reduced-cylinder operation. When the operation mode is switched, the vehicle behavior control device delays the ignition timing in order to reduce the torque, and the delay of the ignition timing caused by the preparatory control before the operation mode switching from the full-cylinder operation to the reduced-cylinder operation may cause Simultaneously, an unintentional flameout may occur

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