Latching frictional engagement assembly using a check valve

A method of controlling a frictional engagement in an automotive device, including the steps of:

• displacing a portion of a check valve to a first position to create an opening from a channel to a chamber at least partially formed by a first piston plate;
• flowing fluid through the check valve to the chamber;
• displacing, in response to flowing the fluid, the first piston plate in a first axial direction to urge at least one frictionally engageable plate into frictional engagement, such that a distal portion of the first piston plate, urging the at least one frictionally engageable plate into frictional engagement, is in a furthest position in the first axial direction;
• displacing the portion of the check valve to a second position to block the opening;
• and,
• controlling fluid volume in the chamber to maintain the distal portion of the first piston plate in the furthest position as the portion translates from the first position to the second position.

A wet clutch pack assembly for an automotive device, including:

• at least one frictionally engageable plate;
• first and second piston plates displaceable in a first axial direction to urge the at least one frictionally engageable plate into frictional contact;
• a check valve controlling fluid flow to displace the second piston plate;
• and,
• a resilient element engaged with the first and second piston plates, wherein, as fluid from a chamber, at least partially formed by the second piston plate, discharges through the check valve, the resilient element displaces the second plate in the second direction to control fluid volume in the chamber and the resilient element reacts against the first piston plate to maintain a distal portion of the first piston plate, urging the at least one frictionally engageable plate into frictional contact, in a furthest position in the first axial direction.