CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE

摘要

A control apparatus is provided for an internal combustion engine that includes a turbosupercharger, an electric supercharger, and a waste gate valve configured to open and close an exhaust bypass passage. In a single-supercharging range in which an engine torque is less than a torque boundary value TQ2, a WGV opening degree is controlled so as to decrease accompanying an increase in the engine torque. Further, in a twin-supercharging range in which the engine torque is equal to or greater than the torque boundary value TQ2, the WGV opening degree is controlled so as to increase accompanying an increase in the engine torque, and the electric motor 24b is actuated for supercharging.

主权项

1. A control apparatus for an internal combustion engine that includes:
a turbosupercharger configured to supercharge intake air by utilizing exhaust energy that is recovered by a turbine disposed in an exhaust passage of the internal combustion engine as a power source; an electric supercharger configured to supercharge intake air by utilizing an electric motor as a power source; an exhaust bypass passage that bypasses the turbine; and a waste gate valve configured to open and close the exhaust bypass passage, the control apparatus comprising: a controller, the controller configured to: control an opening degree of the waste gate valve so that, in a first torque index value range in which a torque index value that has a correlation with an engine torque is less than a first boundary value, the opening degree of the waste gate valve decreases accompanying an increase in the engine torque; control the opening degree of the waste gate valve so that, in an increase range that is included in a second torque index value range in which the torque index value is equal to or greater than the first boundary value, the opening degree of the waste gate valve increases accompanying an increase in the engine torque; and actuate the electric motor for supercharging in the second torque index value range.