flow rate and compressor pressure ratio are at levels that limit the possibility of compressor surge thus a portion of air flowing through the turbocharger compressor flows into the engine while the remaining amount of air flowing through the turbocharger compressor is directed through the cbv in this way it may be possible to reduce the possibility of compressor surge without having to control a cbv via electronics separate from engine throttle electronics thus control of the cbv occurs by controlling the position of the engine throttle consequently control of the cbv may be simplified referring now to fig5 a method for operating a turbocharger compressor bypass valve is shown the method fig5 may be executed via instructions of controller 12 in the system as shown in fig1 further the method of fig5 may provide the operating sequence illustrated in fig5 at 502 method 500 determines engine operating conditions engine operating conditions may include but are not limited to engine speed engine air amount engine temperature engine torque demand ambient temperature and ambient pressure method 500 proceeds to 504 after engine operating conditions are determined at 504 method 500 judges whether or not engine torque demand is increasing the engine torque demand may be made via an operator request or a request of a controller e g a hybrid engine controller if it is judged that the torque demand is increasing method 500 proceeds to 506 otherwise method 500 proceeds to 512 at 506 method 500 adjusts air flow through the turbocharger compressor to provide a desired engine torque the compressor air flow rate.