Turbocharged engine with vacuum bleed valve

摘要

A turbocharged internal combustion engine has a carburetor fuel metering control rod, an ignition timing control member, an exhaust gas recirculation control pintle, and an induction air temperature control damper operated in a response to vacuum signals created by the pressure in the induction passage between the throttle and the turbocharger compressor and a valve which bleeds the vacuum signals to atmospheric pressure when the compressor discharge pressure rises above a selected value to establish a rich air-fuel mixture, retard ignition timing, inhibit exhaust gas recirculation and provide cool induction air flow for maximum power operation.