Patent ID: 7032382

Claim:
An internal combustion engine provided with an intake bypass control device, said engine comprising: a turbocharger including: (i) a compressor for taking in and pressurizing ambient air and supplying the pressurized air into the internal combustion engine, and (ii) an exhaust turbine for driving the compressor; a connecting passage for connecting an outlet passage of the compressor to an inlet passage of the exhaust turbine; a bypass valve arranged in the connecting passage; an operating condition detector for detecting an operating condition of the internal combustion engine; and a bypass valve opening controller adapted to open the bypass valve upon determining, in response to a signal from the operating condition detector, that the internal combustion engine is in a low-speed and high-load the operating condition; wherein the operating condition detector comprises a charge pressure detector for detecting a charge pressure of the turbocharger, and a charge air flow rate detector for detecting a charge air flow rate of the turbocharger, and wherein the bypass valve opening controller is adapted to open the bypass valve upon determining that one of: (i) the internal combustion engine is in the low-speed and high-load operating condition, and (ii) that an operating condition of the compressor is in a vicinity of a surging range based on the charge pressure detected by the charge pressure detector and the charge air flow rate detected by the charge air flow rate detector.