Control system for engine
Number of patents in Portfolio can not be more than 2000
United States of America
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Mar 24, 2020
Grant Date -
Jan 31, 2019
app pub date -
Jun 29, 2018
filing date -
Jun 29, 2018
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A control system for an engine is provided, which includes an engine body formed with a cylinder, a NOx catalyst, an oxidation catalyst, a PM filter, a fuel injector configured to perform a main injection and a post injection, and a controller configured to execute a DeNOx control in which the fuel injector is controlled to perform the main and post injections so that an air-fuel ratio of exhaust gas is brought close to the stoichiometric air-fuel ratio or becomes rich and fuel supplied into the cylinder by the post injection combusts therein, and a filter regenerating control in which the fuel injector is controlled to perform the main and post injections so that the air-fuel ratio becomes lean and the fuel supplied into the cylinder by the post injection causes no combustion therein, the controller executing the DeNOx control and the filter regenerating control consecutively in this order.
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