Patent ID: 9541012
Date: 2017-01-10
CPC Classifications: F02B,F02D,Y02T

Claim:
1. A control apparatus of an internal combustion engine controlling an internal combustion engine equipped with a supercharger having a turbine provided to an exhaust path of the internal combustion engine and a compressor provided upstream of a throttle valve provided to an intake path of the internal combustion engine and rotating integrally with the turbine, comprising: an intake manifold pressure detector configured to detect an internal pressure of an intake manifold formed of a portion including a surge tank and an intake manifold provided downstream of the throttle valve as an intake manifold pressure; an intake manifold temperature detector configured to detect an internal intake temperature of the intake manifold as an intake manifold temperature; a waste gate valve configured to provide to a bypass passage bypassing the turbine and changes a passage sectional area of the bypass passage by changing an opening degree; a rotation speed detector configured to detect a rotation speed of the internal combustion engine; an exhaust pressure calculator configured to calculate a pressure in the exhaust path provided upstream of the turbine as an exhaust pressure; a pre-correction volumetric efficiency equivalent value calculator configured to calculate a pre-correction volumetric efficiency equivalent value, which is an index indicating an amount of air entering a cylinder of the internal combustion engine from the intake manifold at one of a predetermined opening degree and a predetermined opening degree indicated value of the waste gate valve, on the basis of the intake manifold pressure and the rotation speed of the internal combustion engine; and an exhaust pressure calculator for pre-correction volumetric efficiency equivalent value configured to calculate an exhaust pressure for pre-correction volumetric efficiency equivalent value, which is an exhaust pressure corresponding to the pre-correction volumetric efficiency equivalent value, on the basis of the intake manifold pressure and the rotation speed of the internal combustion engine; a cylinder suction air amount calculator configured to calculate a correction calculation parameter using the exhaust pressure, the exhaust pressure for pre-correction volumetric efficiency equivalent value, and the intake manifold pressure, and a post-correction volumetric efficiency equivalent value is calculated by correcting the pre-correction volumetric efficiency equivalent value using the correction calculation parameter, wherein: the amount of air entering the cylinder from the intake manifold is calculated on the basis of the post-correction volumetric efficiency equivalent value; and fuel input into the internal combustion engine is controlled by the control apparatus at least in part based on the calculated amount of air.