IGNITION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

摘要

An ignition control device for an internal combustion engine, which controls the number of times of ignition operation such that it becomes neither too large nor too small, according to a flowing state of a mixture in a cylinder. In the ignition control device, a target ignition timing is used as an in-cylinder flow parameter indicative of the strength of a tumble flow generated in a cylinder. When the target ignition timing is more advanced than a predetermined reference position, it is determined that the tumble flow is strong, and multiple ignition control is executed by setting the number of times of ignition to a plurality of times, whereas when the former is more retarded than the latter, it is determined that the tumble flow is not strong, and normal ignition control is executed by setting the number of times of ignition to only once.

主权项

1. An ignition control device for an internal combustion engine, for controlling an ignition device which is capable of performing ignition operation for igniting a mixture in a cylinder a plurality of times in one combustion cycle, comprising:
an in-cylinder flow control device for controlling a strength of in-cylinder flow of a mixture in the cylinder; in-cylinder flow parameter-acquiring means for acquiring an in-cylinder flow parameter indicative of the strength of the in-cylinder flow; in-cylinder flow-determining means for determining, based on a result of comparison between the acquired in-cylinder flow parameter and a predetermined threshold value, whether or not the in-cylinder flow is strong; and ignition control means for executing, when said in-cylinder flow-determining means determines that the in-cylinder flow is strong, multiple ignition control for controlling a number of times of ignition, which is a number of times of ignition operation by the ignition device in one combustion cycle, to a plurality of times, and executing, when said in-cylinder flow-determining means determines that the in-cylinder flow is not strong, normal ignition control for controlling the number of times of ignition to once.