17-04-2014 дата публикации
Номер: US20140106929A1
Provided are a drive system and a method for controlling the drive system which reduce a shock to a third shaft at the start of an internal combustion engine during EV driving. The drive system includes an engine, a first shaft connected to a crankshaft, a second shaft, a first clutch, a motor generator, a third shaft, a first transmission, a one-way clutch, and an ECU for controlling a gear ratio of the first transmission and the first clutch. The first transmission includes a rotating ring, a rocking portion, and a rotation radius variation mechanism. If an angular velocity of the rocking portion is higher than or equal to a rotational speed of the third shaft, the one-way clutch transmits a power in only one direction of the rocking portion to the third shaft. 1. A drive system mounted on a hybrid vehicle , comprising:an internal combustion engine;a first shaft connected to an output shaft of the internal combustion engine;a second shaft;a first connecting/disconnecting unit that connects or disconnects a power transmission between the first shaft and the second shaft;a motor generator that drives the second shaft;a third shaft that rotates integrally with drive wheels;a first transmission that shifts a power of the second shaft;a one-way clutch that transmits the power after shifted by the first transmission to the third shaft; anda control unit that controls a gear ratio of the first transmission and the first connecting/disconnecting unit, wherein a rotating part that rotates by a rotary motion of the second shaft;', 'a rocking portion that rocks by a rotary motion of the rotating part; and', 'a rotation radius variation mechanism that varies an angular velocity of the rocking portion and the gear ratio by varying a rotation radius of the rotating part, wherein, 'the first transmission comprisesthe one-way clutch transmits a power in only one direction of the rocking portion to the third shaft if the angular velocity of the rocking portion is more than or ...
Подробнее