| 摘要 |
This engine control system is provided with an engine (10), and with an external EGR device (35) in which part of the exhaust gas is recirculated as EGR gas through an EGR pipe (36) to an intake passage by opening an EGR valve (37) provided in the EGR pipe (36). During an engine-stopped period extending from a stopping operation for the engine (10) to the starting of the engine the next time, ECUs (50, 60) performs EGR drainage control for opening the EGR valve (37) to drain water from the EGR pipe (36). The EGR drainage control includes post-stop drainage control carried out immediately after engine stop, and pre-start drainage control carried out immediately before starting the engine (10) if a prescribed pre-start operation carried out by the operator is detected. |
