Patent ID: 8161744

Claim:
An internal combustion engine, comprising: a block defining a plurality of combustion cylinders; an intake manifold fluidly coupled with at least one said combustion cylinder; an exhaust manifold fluidly coupled with at least one said combustion cylinder; a turbocharger including a turbine fluidly coupled with said exhaust manifold, and a single stage fixed geometry compressor fluidly coupled with said intake manifold, said single stage fixed geometry compressor including an inlet and an outlet; a control device for controlling operation of said turbocharger; a microphone positioned at one of said single stage fixed geometry compressor inlet and said single stage fixed geometry compressor outlet, said microphone providing an output signal; and an engine control unit (ECU) coupled with said microphone, said ECU controlling operation of said turbocharger control device to prevent surge of said single stage fixed geometry compressor, dependent upon said output signal from said microphone exceeding a threshold value and wherein said value of said output signal corresponds to an amplitude and a frequency of said output signal.