| 摘要 |
PROBLEM TO BE SOLVED: To provide a power transmission for vehicles which suppresses the occurrence of relatively sudden variation of the output shaft torque of a power transmission caused when the output rotational speed of an electric differential unit varies. SOLUTION: When the output rotational speed N<SB>18</SB>of a differential unit 11 varies, the deviation value e of the actual rotational speed N<SB>E</SB>of an engine 8 from a target rotational speed N<SB>ELINE</SB>is calculated at a predetermined time. The target rotational speed N<SB>ELINE</SB>is set so that the deviation value e may converge with a predetermined slope. Therefore, in controlling the engine rotational speed by means of, e.g., an electric motor M1, the variation of the output shaft rotational speed of the differential unit 11 can be preferably reduced. Hence, the power transmission 10 can be provided which enables suppression of the occurrence of relatively sudden variation of the output shaft torque caused when the output rotational speed of the differential unit 11 varies. COPYRIGHT: (C)2010,JPO&INPIT |
