Patent ID: 11920529
Assignee: NISSAN MOTOR CO., LTD.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 9:
10. A control apparatus for an internal combustion engine mounted on a vehicle and comprising an exhaust gas recirculation device, the control apparatus comprising:
a controller configured to control operation of the exhaust gas recirculation device and output of the internal combustion engine; and
one sensor or a plurality of sensors provided to detect information about an output limiting factor including an atmospheric pressure or vehicle running speed,
the internal combustion engine having: a first output limit which is associated with at least a knock limit and whose value increases with increase of an exhaust gas recirculation rate; and a second output limit whose value decreases with decrease of the output limiting factor and with increase of the exhaust gas recirculation rate,
wherein the controller is configured to set a target exhaust gas recirculation rate at which the first output limit becomes equal to the second output limit and control the exhaust gas recirculation rate according to the target exhaust gas recirculation rate.