N D SBW 3 Three-element control hydraulic control system for hydraulically operated SBW with limp home mode N and D speed function

摘要

The present invention relates to a 3-way control hydraulic control system for a hydraulic SBW with the addition of the lymph home mode N and D stage functions, the first to seventh operating elements mounted on the transmission to implement a transmission ratio by intermittently rotating elements, and Hydraulic line for supplying the lip pressure to the 1st to 7th operating elements, and a plurality of solenoid valves mounted on the hydraulic line to selectively supply the line pressure to the 1st to 7th operating elements, and the hydraulic line for the lymph home mode It includes a first and second lymph groove valves mounted on the valve, and the solenoid valve includes an on-off solenoid valve that moves the first and second lymph groove valves during opening operation. Even if a solenoid valve that controls the hydraulic pressure applied to the element is provided as a normally low type that operates when energized, the lymph groove is changed by changing the line through which the hydraulic fluid flows by the first lymph groove valve, the second lymph groove valve, and the on-off solenoid valve. It provides a three-element control hydraulic control system for hydraulic SBW with the addition of the N, D stage functions of the lymph home mode that can implement the mode.