Planetary gear train of automatic transmission for vehicles

• Main Authors: HWANG, SEONG WOOK, JI, SEONGWOOK, KWON, HYUN SIK, CHO, WONMIN, KOOK, JAE CHANG
• Format: Patent
• Language: Chinese; English
• Published: 26.09.2017
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

The invention provides a planetary gear train of claim of an automatic transmission for a vehicle, which comprises an input shaft configured to receive an engine torque; an output shaft configured to output a shifted torque; a first planetary gear set having first, second, and third rotational elements; a second planetary gear set having fourth, fifth, and sixth rotational elements; a third planetary gear set having seventh, eighth, and ninth rotational elements; a fourth planetary gear set having tenth, eleventh, and twelfth rotational elements; a first shaft connected with the first rotational element; a second shaft interconnecting the second rotational element, the fourth rotational element, and seventh rotational element, and directly connected with the input shaft; a third shaft interconnecting the third rotational element and the eleventh rotational element; a fourth shaft interconnecting the fifth rotational element and the ninth rotational element, and selectively connected with the third shaft; a fi