| 摘要 |
PROBLEM TO BE SOLVED: To aim at quick convergence of an engine control parameter to the vicinity of a stability limit, regarding a control device for operating an internal combustion engine at the vicinity of a stability limit. SOLUTION: Indicated torque ITQ is computed by integrating the combustion pressure of the internal combustion engine over 720°CA. At each operation condition of the internal combustion engine and with a change of an ignition timing, correlation materialized between the indicated torque ITQ and standard deviationσof the ITQ is stored (Relation of a solid line relation and relation of a broken line). Measured indicated torque ITQ is applied on correlation and the standard deviationσof the ITQ is estimated. The delay limit of an ignition timing is controlled such that the standard deviationσdoes not exceed a decision valueσthr. COPYRIGHT: (C)2006,JPO&NCIPI
|
