| 摘要 |
<P>PROBLEM TO BE SOLVED: To accurately perform the control of a speed changing operation when the control of the speed changing operation of a transmission in a hybrid vehicle is performed on the basis of the rotational speed of a main shaft and a counter shaft. <P>SOLUTION: In the hybrid vehicle for controlling the speed changing ratio of the transmission T based on the output of a rotational speed sensor Sm of the main shaft and a rotational speed sensor Sc of the counter shaft, when abnormality has occurred in the rotational speed sensor Sc of the counter shaft, the speed changing operation of the transmission T is controlled by connecting a motor M to the counter shaft CS by engaging a clutch mechanism 56 and also by detecting the rotational speed of the counter shaft CS from the rotational speed of the motor M by means of a rotational speed sensor Smot of the motor. Further, even when the rotational speed sensor Sc of the counter shaft is normal, when the clutch mechanism 56 is engaged, the rotational speed of the counter shaft CS obtained from the furthermore accurate rotational speed of the motor M is used instead of the rotational speed of the counter shaft CS detected by means of the rotational speed sensor Sc of the counter shaft. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
