HYDRAULIC CONTROL SYSTEM FOR AUTOMATIC GEARBOX WITH TORQUE CONVERTER CONTROL SUBSYSTEM WITH THREE POWER TRANSFER PATHS Russian patent published in 2012 - IPC F16H61/38 

FIELD: transport.

SUBSTANCE: proposed system comprises first source of pressurised hydraulic fluid source to produce first fluid flow and second source of pressurised hydraulic fluid source to produce second fluid flow, and torque converter control subsystem to control said converter and its coupling. Said subsystem comprises torque converter control valve and solenoid. Said solenoid is multiplexed to aforesaid control vale and coupling. Said control valve controls hydraulic fluid flow to torque converter and other subsystems in hydraulic control system.

EFFECT: higher efficiency and response in control, smooth control.

10 cl, 6 dwg