CONDENSED WATER TREATMENT DEVICE FOR INTERNAL COMBUSTION ENGINE

摘要

The condensed water treatment device increases the EGR quantity (S16, S17) so as to be larger than the EGR quantity (Qe) calculated based on the operating state, when within a specific time period (S13) from a moment when execution of filter regeneration control is started to a moment after predetermined time has elapsed following the end of the execution, and also in a case where (S15) the storage water quantity (Qw) of a condensed water tank storing condensed water generated in an EGR cooler is smaller than a normative water quantity (Qwt).

主权项

1. A condensed water treatment device for an internal combustion engine, the condensed water treatment device being applied to the internal combustion engine comprising:
an EGR device which has an EGR passage leading a part of exhaust gas as EGR gas to an intake system and an EGR cooler cooling the EGR gas; a filter which captures PM included in the exhaust gas; and a computer which functions, by executing a computer program, as: an EGR quantity calculating device which is configured to calculate an EGR quantity which is an inflow quantity of the EGR gas to the intake system, based on an operating state; and a filter regeneration controlling device which is configured to execute a filter regeneration control where the PM captured by the filter is removed, wherein the condensed water treatment device comprises: a condensed water tank which stores condensed water generated in the EGR cooler; and an EGR quantity increasing device which the computer by executing the computer program functions as, the EGR quantity increasing device being configured to increase the EGR quantity so as to be larger than a normative gas quantity which is the EGR quantity calculated by the EGR quantity calculating device, in a case where a storage water quantity of the condensed water stored in the condensed water tank is smaller than a normative water quantity, when within a specific time period from a moment when execution of the filter regeneration control is started to a moment after a predetermined time had elapsed following the end of the execution.