VARIABLE VANE TYPE TURBO CHARGER CONTROL DEVICE

摘要

A turbocharger (30) includes a turbine (32) arranged in an exhaust passage (20) of an internal combustion engine of a vehicle, a compressor (34) that is provided in an intake passage (22) of the engine and supplies air to the engine in correspondence with the drive torque produced by the turbine (32), and variable vanes (36) that selectively open and close to change the flow rate of the exhaust gas that drives the turbine (32). An ECU (70) includes transient state determining means that determines whether the engine is in a transient state and VN opening degree setting means that, when the transient state determining means determines that the engine is in the transient state, sets a target VN opening degree vt in correspondence with the exhaust energy determined in correspondence with the air intake amount representing the flow rate of the exhaust gas and the fuel injection amount. The opening degree of the variable vanes (36) is controlled in correspondence with the target VN opening degree vt, which is set by the VN opening degree setting means. This improves the response of supercharging when the engine is in the transient state.