CONTROL MEHTOD FOR TURBOCHAGER

摘要

The present invention relates to a control method for a turbocharger comprising: a first intake line to supply air to an intake manifold; a turbocharger comprising a turbine and a compressor; a second intake line to supply fresh air to the compressor; a third intake line to connect the compressor and the first intake line; a throttle valve installed to control air flow supplied from the first intake line and the third intake line; an intake bypass valve installed to control air flow flowing the first intake line; a first exhaust line formed to discharge exhaust gas of an exhaust manifold; a second exhaust line arranged such that a part of an exhaust gas discharged from the exhaust manifold flows together the first exhaust line through a turbine; an exhaust bypass valve installed to control gas flow discharged from the first exhaust line; and a controlling part to control an opening of the intake bypass valve, the exhaust bypass valve, and the throttle valve in accordance to an operating condition of a vehicle. In the control method for the turbocharger, the controlling part executes a series of commands comprising the steps of: determining whether the controlling part corresponds to a low and medium velocity condition with the engine rpm set; determining whether an acceleration conditions are satisfied in case of corresponding to the low and medium velocity condition; and controlling an opening angle of the exhaust bypass valve in accordance to the acceleration requirements.