CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE (AS AMENDED)

摘要

A control apparatus for an internal combustion engine according to the invention is applied to an internal combustion engine in which EGR gas and condensed water generated by an EGR cooler are supplied into a cylinder. The control apparatus calculates an equivalence ratio of the internal combustion engine, and controls an EGR valve and a condensed water supply valve such that, when the equivalence ratio is high, a supply rate of the condensed water increases and a supply rate of the EGR gas decreases relative to when the equivalence ratio is low.

主权项

1. A control apparatus for an internal combustion engine configured to inject fuel into a cylinder, the internal combustion engine including
an EGR apparatus configured to supply a part of exhaust gas into the cylinder as EGR gas, and a low density substance supply apparatus configured to supply a low density substance having a lower density than the EGR gas into the cylinder, the control apparatus comprising an electronic control unit configured to
(i) calculate an equivalence ratio of the internal combustion engine and(ii) control the EGR apparatus and the low density substance supply apparatus such that, when the equivalence ratio is high, a supply rate of the low density substance increases and a supply rate of the EGR gas decreases relative to when the equivalence ratio is low.