Patent ID: 8386154
Filing Date: 2013-02-26
Classification: B60K,B60L,B60W,F02D,F02M,Y02T

Abstract:
1. An internal combustion engine system having an internal combustion engine, the internal combustion engine system comprising: an exhaust gas recirculation unit that performs an exhaust gas recirculation where exhaust from the internal combustion engine is recirculated to an intake system of the internal combustion engine; a temperature detector that detects a temperature of cooling water of the internal combustion engine; a target power setting module that sets a target power to be output from the internal combustion engine; an execution relation setting module that, when the exhaust gas recirculation is started by the exhaust gas recirculation unit with the detected temperature of the cooling water being more than or equal to a first temperature while a first relation between a rotation speed and a torque of the internal combustion engine is set as an execution relation, sets a second relation having a smaller torque than the torque of the internal combustion engine in the first relation as the execution relation; when the detected temperature of the cooling water being more than or equal to the second temperature that is smaller than the first temperature while the second relation is set as the execution relation, holds the second relation as the execution relation, and when the detected temperature of the cooling water becomes smaller than the second temperature while the second relation is set as the execution relation, the execution relation setting module sets the first relation as the execution relation; and a control module that controls the internal combustion engine and the exhaust gas recirculation unit so that the set target power is output from the internal combustion engine according to the set execution relation with the exhaust gas recirculation performed as necessary.