Patent ID: 8413777

Claim:
A hydraulic control system for a dual clutch transmission comprising, in combination, a source of hydraulic fluid including a pump, a bypass valve, an accumulator and a cooling pressure regulator valve, a first 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 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 variable force solenoid valve in fluid communication with said source of fluid and having a fifth output provided to said cooling pressure regulator valve, an on-off solenoid valve in fluid communication with said source of fluid and having a output provided to said bypass valve, a first logic valve having a pair of inlets in respective fluid communication with said second output and said third output and four outlets, a first shift actuator having a pair of ports in fluid communication with a pair of said outlets, a second logic valve having a pair of inlets in fluid communication with another pair of said outlets, two control ports and four actuator outlets, 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.