Patent ID: 8430220

Claim:
A hydraulic control system for a wet dual clutch transmission comprising, in combination, a source of hydraulic fluid including an engine driven pump, a pressure blow off valve, a cooler pressure regulator and a line pressure regulator, a hydraulic fluid cooler, a first pressure control variable force solenoid valve in fluid communication with said source of fluid and having a first output provided to a first clutch actuator, a second variable force solenoid valve in fluid communication with said source of fluid and having a second output, a third variable force solenoid valve in fluid communication with said source of fluid and having a third output, a fourth pressure control variable force solenoid valve in fluid communication with said source of fluid and having a fourth output provided to a second clutch actuator, a fifth pressure control variable force solenoid valve in fluid communication with said source of fluid and having a fifth output provided to said line pressure regulator, a sixth pressure control variable force solenoid valve in fluid communication with said source of fluid and having a sixth output provided to said cooler pressure regulator, a first logic valve having a pair of inlets in respective fluid communication with said second output of said second variable force solenoid valve and said third output of said third variable force solenoid valve, a first outlet, a second outlet, a third outlet, a fourth outlet and a control port, a first shift actuator having a pair of ports in fluid communication with a pair of said outlets of said first logic valve, a second logic valve having a pair of inlets in fluid communication with another pair of said outlets of said first logic valve, two control ports, a first actuator outlet, a second actuator outlet, a third actuator outlet and a fourth actuator outlet, said control ports in respective fluid communication with said first output and said fourth output, a second shift actuator having a pair of ports in fluid communication with a pair of said actuator outlets, and a third shift actuator having pair of ports in fluid communication with another pair of said actuator outlets.