Patent ID: 6394928
Filing Date: 2002-05-28
Classification: F16H

Abstract:
An automatic transmission powertrain comprising:a torque converter acting as a fluid link between an engine and a transmission, the torque converter outputting rotational power to an input shaft of the powertrain; a primary shift portion provided on a first shaft, a long axis of which is aligned with a long axis of the input shaft, the primary shift portion being selectively connected to the input shaft to receive rotational power; a secondary shift portion provided on a second shaft, the second shaft being parallel to the first shaft with a predetermined distance therebetween, and the secondary shift portion being connected to the primary shift portion via two power transmitting paths to transmit power to an output shaft of the powertrain; power transmitting means for transmitting rotational power of the primary shift portion to the secondary shift portion; brake means for operating operational elements of both the primary shift portion and the secondary shift portion as reaction elements; clutch means for selectively transmitting power to operational elements of the primary shift portion; and non-synchronous shift means for operating during 1&rlarr;2, 2&rlarr;3 and 4&rlarr;2 shifting.