| 摘要 |
<P>PROBLEM TO BE SOLVED: To determine the suitability of the ignition timing of an internal combustion engine implemented in promoting the warming-up of a purifying device (catalyst) for purifying the exhaust gas of the internal combustion engine. <P>SOLUTION: When the engine is started by a motor generator, the temperature of exhaust gas is raised by adjusting an ignition advance angle F to a lag side to warm up the purifying device (S102). After the adjustment of the ignition advance angle F, an engine torque Te outputted from the engine is calculated on the basis of reaction torque acting upon the motor generator (S108) and it is determined whether or not engine torque Te is smaller than criterion torque Tref preset corresponding to an engine speed and an intake air amount (S112), and the engine torque reaches the criterion torque Tref or higher, it is determined that ignition timing adjustment has some failure to turn on a warning lamp (S118). Engine output torque and ignition timing have fixed relations, therefore the suitability of the ignition timing adjustment can be determined by monitoring the output torque. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
