Patent ID: 7991536

Claim:
A control system for an internal combustion engine equipped with a supercharger, comprising: (a) accelerator pedal travel measuring means for measuring a travel of an accelerator pedal, (b) intake air pressure measuring means for measuring a pressure of intake air at a location upstream of a throttle valve and downstream of the supercharger, (c) target intake mass airflow calculating means, including a virtual internal combustion engine model having a virtual upstream intake air pressure, for calculating a target intake mass airflow in accordance with the measured accelerator pedal travel, using a relationship between the accelerator pedal travel and the intake mass airflow in the virtual internal combustion engine model, (d) target throttle opening calculating means for calculating a target throttle opening in accordance with the measured upstream intake air pressure, so as to provide the calculated target intake mass airflow, and (e) throttle control means for controlling the throttle valve based on the target throttle opening, wherein the target throttle opening is controlled to open more when the accelerator pedal is first depressed until a quasi-equilibrium torque is achieved.