| 摘要 |
<p>PROBLEM TO BE SOLVED: To avoid the reciprocal adverse effects of an engine and a transmission by informing the catalyst regeneration reaction to a transmission control part through an interface which connects the engine and each control part of the transmission mutually so as to postpone a shift process. SOLUTION: A transmission control part 6 postpones a shift change of a transmission 8 as far as catalyst regeneration action is done and even stops it in an extreme case. An engine control part 2 sends a condition signal AS to it through an interface 16 to inform such a special engine condition to the transmission control part 6 and furthermore postpone a shift process or a change of a change gear ratio in the ransmission 8. For example, at the time of shift up according to the present characteristic map, a special shift characteristic map 19 acts to postpone it so as to increase the number of rotation and postpone it so as to decrease the number of rotation at the time of shift down. Consequently, the transmission control part operates without trouble together with the engine control part even at the time of lean operation of an internal combustion engine and uniform operation thereof.</p> |
