Patent ID: 8206265

Claim:
A hydraulic control system for a dual clutch automatic transmission comprising, in combination, means for controlling a flow of hydraulic fluid to a lock up clutch of a torque converter, a first pair of valves for independently controlling flows of hydraulic fluid to a respective pair of input clutches of such transmission, a manually activated valve for selectively inhibiting fluid flow to said first pair of valves, a second pair of valves for providing two independently controlled flows of hydraulic fluid, a first control valve for receiving said two flows of hydraulic fluid from said second pair of valves and alternately directing one of said flows to either a first or a second output while directing another of said flows to either a third or a fourth output, a second control valve for receiving hydraulic fluid flows from said second and said fourth outputs and alternately directing said fluid flow from said second output to either a first actuator input or a second actuator input while directing said fluid flow from said fourth output to either a third actuator input or a fourth actuator input, and a third control valve for receiving hydraulic fluid flows from said first and said third outputs and alternately directing said fluid flow from said first output to either a fifth actuator input or a sixth actuator input while directing said fluid flow from said third output to either a seventh actuator input or an eighth actuator input.