CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To stabilize operation of an internal combustion engine when a catalyst is warmed up in the internal combustion engine performing catalyst warming up operation accompanied by adjustment of ignition timing. SOLUTION: An engine ECU 300 establishes ignition delay quantity (S200) for raising exhaust temperature according to environment condition during catalyst warming up operation. Correction value (increase quantity) of suction air quantity compensating engine output (torque) drop due to ignition delay is determined (S210) according to ignition delay quantity established in S200 and atmospheric pressure during catalyst warming up operation with considering that ratio of increase of engine output (torque) to increase of suction air quantity changes with depending on ignition timing and atmospheric pressure. COPYRIGHT: (C)2007,JPO&INPIT