To provide an engine control device which can learn properly a change in the relationship between the throttle opening degree and the air intake quantity (opening degree-air quantity characteristic), while suppressing deterioration of fuel consumption to the minimum, and which can prevent engine stall and improving torque control accuracy and the like.
An engine control device includes: a leaning means that learns a characteristic change in the opening degree-air quantity characteristic; a learning necessity determination means that determines whether learning is necessary; and a learning transition means that, when it is determined that the learning is necessary, causes the learning means to perform the learning in a stable driving state. The learning necessity determination means obtains, in the stable driving state, an amount of deviation between the air intake quantity corresponding to the throttle valve opening degree at that time stored in a characteristic storage means and the actual air intake quantity detected by an air flow sensor, and determines whether the learning is necessary by using the amount of deviation and a threshold value set therefor.
| JP2010065529A | 2010-03-25 | |||
| JP2007092711A | 2007-04-12 | |||
| JP2004257317A | 2004-09-16 | |||
| JP3808200B2 | 2006-08-09 | |||
| JP2011001822A | 2011-01-06 | |||
| JP2011094561A | 2011-05-12 |
Sekiya Mitsuo
Toshiaki Watanabe