CONTROL DEVICE FOR COMPRESSION IGNITION-TYPE ENGINE

摘要

A control device for a compression ignition engine includes a controller configured to operate an engine body by compression ignition combustion when the engine body operates in a compression ignition range. When the engine body operates in a low load range with a load lower than a predetermined load in the compression ignition range, the controller sets a time of fuel injection with the fuel injection valve in a first half of a compression stroke or earlier, and allows the ozonator to introduce the ozone into the cylinder. When the engine body operates in the low load range, the controller controls an ozone concentration to be lower at a higher speed than at a low speed.

主权项

1. A control device for a compression ignition engine, the control device comprising:
an engine body including a cylinder; a fuel injection valve configured to directly inject fuel into the cylinder; an ozonator configured to generate ozone to be introduced into the cylinder; and a controller configured to operate the engine body by compression ignition combustion of an air-fuel mixture in the cylinder when the engine body operates in a predetermined compression ignition range, wherein when the engine body operates in a low load range with a load lower than a predetermined load in the compression ignition range, the controller sets a time of fuel injection with the fuel injection valve in a first half of a compression stroke or earlier, and allows the ozonator to introduce the ozone into the cylinder, and when the engine body operates in the low load range, the controller controls an ozone concentration to be lower at a higher speed than at a low speed.