Patent ID: 8683977
Filing Date: 2014-04-01
Classification: F01N,F02D,F02M

Abstract:
1. A control system for an internal combustion engine with a plurality of cylinder banks, the control system comprising: an exhaust passage provided for each cylinder bank of the plurality of cylinder banks, such that each exhaust passage is connected to a respective cylinder bank; a shared intake passage that is shared by each cylinder bank of the plurality of cylinder banks; an EGR passage, one end of which is connected to a first exhaust passage and another end of which is connected to the shared intake passage, such that one or more second exhaust passages are not connected to the EGR passage; an EGR valve that is provided in the EGR passage and regulates a feed rate of EGR gas that is introduced to the shared intake passage; a stuck-open detecting portion configured to detect whether the EGR valve is stuck in an open state; and a fuel-cut control execution portion configured to execute a fuel-cut control in the cylinder bank that is connected to the first exhaust passage when the stuck-open detecting portions detects that the EGR valve is stuck in an open state, wherein the internal combustion engine is a spark-ignition internal combustion engine that includes a spark plug in each cylinder, and if either an intake valve or an exhaust valve does not remain closed in the cylinder bank that is connected to the first exhaust passage when the fuel-cut control is executed by the fuel-cut control execution portion, a delay angle is set to retard ignition timing of the spark plugs of the other cylinder banks that are connected to the one or more second exhaust passages when the fuel-cut control is executed by the fuel-cut control execution portion.