| 摘要 |
<p>Disclosed is an internal combustion engine control apparatus that includes an in-cylinder pressure sensor for detecting in-cylinder pressure Pc. Combustion start time ?0 and combustion end time ?f, which are parameters serving as control indexes for an internal combustion engine, are determined in accordance with ignition timing SA (step 102). The information about a heat release amount PV<SUP>k</SUP> is acquired in accordance with the in-cylinder pressures Pc that are measured at two points by the in-cylinder pressure sensor (step 104). The in-cylinder pressure P<SUB>?</SUB> is estimated in accordance with Equation 3, which defines the relationship among the heat release amount information, control index parameters, and in-cylinder pressure P<SUB>?</SUB> (step 106).</p> |
