| 摘要 |
PROBLEM TO BE SOLVED: To provide a control device of an internal combustion engine for determining throttle valve downstream side intake pipe internal pressure and a cylinder suction air flow rate in steady operation by a simpler method. SOLUTION: This control device of the internal combustion engine has a throttle valve passing air flow rate calculating expression for expressing a throttle valve passing air flow rate mt as a function of downstream side intake pipe internal pressure on the downstream side of a throttle valve, and a cylinder suction air flow rate calculating expression for expressing a cylinder suction air flow rate mc as a function of the downstream side intake pipe internal pressure. The control device is characterized by calculating the downstream side intake pipe internal pressure Pm and the cylinder suction air flow rate mc, when the throttle valve passing air flow rate mt determined from the throttle valve passing air flow rate calculating expression, coincides with the cylinder suction air flow rate mc determined from the cylinder suction air flow rate calculating expression, as downstream side intake pipe internal pressure Pmta and a cylinder suction air flow rate mcta, when steadily operated under an operation condition at that time. COPYRIGHT: (C)2005,JPO&NCIPI
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