Latching clutch control system

A hydraulic control system in a transmission, the hydraulic control system comprising:

• a source of pressurized hydraulic fluid for providing a pressurized hydraulic fluid;
• a main line circuit in fluid communication with the source of pressurized hydraulic fluid;
• a clutch feed channel in fluid communication with the source of pressurized hydraulic fluid, the clutch feed channel having an inlet portion and a clutch portion, the inlet portion configured to provide hydraulic fluid from the main line circuit to the clutch portion, the clutch portion being configured to provide hydraulic fluid to a torque transmitting device;
• and
• an inlet valve connecting the inlet portion of the clutch feed channel to the clutch portion of the clutch feed channel, the inlet valve configured to open to allow hydraulic fluid to flow from the inlet portion to the clutch portion when the torque transmitting device is engaged, the inlet valve configured to close to trap hydraulic fluid within the torque transmitting device when the torque transmitting device is not actively pressurized through the inlet portion.

A multiple speed automatic transmission comprising:

• an input member;
• an output member;
• first, second, and third planetary gear sets each having first, second and third members;
• a first interconnecting member continuously interconnecting the first member of the first planetary gear set with the second member of the second planetary gear set;
• a second interconnecting member continuously interconnecting the second member of the first planetary gear set with the third member of the third planetary gear set;
• a third interconnecting member continuously interconnecting the third member of the second planetary gear set with the second member of the third planetary gear set;
• and
• five torque transmitting devices each selectively engageable to interconnect at least one of the first, second, and third members with at least one other of the first members, second members, third members and a stationary member,
• wherein the torque transmitting devices are selectively engageable to establish a plurality of forward speed ratios and at least one reverse speed ratio between the input member and the output member, and
• wherein a first torque transmitting device of the five torque transmitting devices is in communication with a clutch feed channel having an inlet portion and a clutch portion, the inlet portion configured to provide hydraulic fluid from a pressurized source to the clutch portion, the clutch portion being configured to provide hydraulic fluid to the first torque transmitting device, and
• wherein an inlet valve connects the inlet portion of the clutch feed channel to the clutch portion of the clutch feed channel, the inlet valve configured to open to allow hydraulic fluid to flow from the inlet portion to the clutch portion of the clutch feed channel when the first torque transmitting device is engaged, the inlet valve configured to close to trap hydraulic fluid within the first torque transmitting device when the first torque transmitting device is not actively pressurized through the inlet portion.