CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

摘要

A control device for an engine of the invention executes an automatic stop control for stopping stop a rotation of a crank shaft when a predetermined automatic stop condition is satisfied. The device acquires a focused peak value of the engine speed appearing after a time when a rotation direction of the crank shaft first reverses while the automatic stop control has been executed, determines, based on the focused peak value, whether there will be an excessive peak value expected to depart from a predetermined permission range after the focused peak value appears, and executes a starter start control for driving the starter, restarting the fuel supply and igniting the fuel to restart an operation of the engine when a predetermined restart condition is satisfied, the engine speed is within the predetermined permission range and it has been determined that there will be no excessive peak value.

主权项

1. A control device for an internal combustion engine, comprising:
at least a fuel supply device for supplying a fuel into a combustion chamber; at least an ignition device for igniting the fuel supplied into the combustion chamber; a crank shaft; an engine speed detection device for detecting an engine speed which corresponds to a rotation speed of the crank shaft; and a starter for rotating the crank shaft, the control device comprising an electronic control unit programmed to execute an automatic stop control for stopping the supply of the fuel from the fuel supply device to stop a rotation of the crank shaft when a predetermined automatic stop condition is satisfied, wherein the electronic control unit is programmed; to acquire, on the basis of the detected engine speed, a focused peak value which corresponds to an extreme value of the engine speed appearing after a first reverse time when a rotation direction of the crank shaft first reverses while the automatic stop control has been executed; to determine, on the basis of the acquired focused peak value, whether there will be an excessive peak value, which is expected to depart from a predetermined permission range, among predicted peak values each corresponding to an extreme value of the engine speed predicted to appear after the focused peak value appears; and to execute a starter start control for driving the starter, restarting the supply of the fuel from the fuel supply device and igniting the fuel by the ignition device to restart an operation of the engine when a predetermined restart condition is satisfied, the detected engine speed is within the predetermined permission range and the electronic control unit has determined that there will be no excessive peak value.