| 摘要 |
Disclosed is a rotary shift control valve for an automatic transmission. The rotary shift control valve comprises a valve body (11), a valve core (19) and a stepping motor (18), wherein the valve core (19) is provided in a valve cavity of the valve body (11); an oil inlet hole (25), an oil outlet hole (13) and an oil drain hole (24) are provided on the valve body (11); an allocation hole (12), an oil inlet ring groove (10) and an oil drain groove (23) are provided in the valve core (19); the oil inlet hole (25) of the valve body (11) is in communication with the oil inlet ring groove (10) of the valve core (19); the oil inlet ring groove (10) is in communication with the allocation hole (12); the oil drain groove (23) is in communication with the oil drain hole (24); the stepping motor (18) is used for driving the valve core (19) to rotate in the valve cavity; and the oil outlet hole (13) is in communication with the allocation hole (12) or the oil drain groove (23) in an alternative manner. The rotary shift control valve for an automatic transmission is improved on the basis of the existing hydraulic control system for an automatic transmission. One or two rotary shift control valves are used to replace various valve bodies, such as all shift valves, gear electromagnetic valves, etc., to work, so that the number of components is greatly reduced, the structure is more compact, the length of an oil line is reduced, the size and volume of the hydraulic control system for the transmission are reduced, and the costs are reduced. |
