GEAR TRAIN OF AN AUTOMATIC TRANSMISSION FOR VEHICLES, CAPABLE OF IMPLEMENTING AT LEAST A EIGHT-SHIFT GEAR BY COMBINING THREE CLUTCH AND THREE BREAKS WITH THREE PLANET GEAR SETS

摘要

PURPOSE: A gear train of an automatic transmission for vehicles is provided to reduce the capacity of a oil pump by dispersing a friction element in order to easily constitute a flow path.;CONSTITUTION: A first and a second planet gear set(PG1,PG2) comprise a first-fifth rotation element. The first rotation element is operated as an input entry. The second rotation element is operated as a selective fixed element. A third rotation element is operated to the fixed element and the selective fixed element. A fourth rotation element is operated as the selective input entry and the selective fixed element. The fifth rotation element is directly connected to the output gear(OG). The third planetary gear set(PG3) comprises rotation element(N6-N8). The sixth rotation element is connected to the fifth rotation element fixedly.;COPYRIGHT KIPO 2010