Torque converter lock-up and disconnect clutch structure

A torque converter and clutch structure (10) for a drive system of the type comprising a torque converter (20) drivingly interposed a prime mover (16) and an input shaft (72) of a mechanical change gear transmission (14), said torque converter having an impeller input member (54) adapted to be driven by said prime mover and a turbine output member (60) fluidly driven by said impeller input member, said torque converter and clutch structure characterized by:

• a first connecting member (74) adapted to be rotationally fixed to said input shaft;
• a second connecting member (79) rotationally fixed to said torque converter turbine member (60), said second connecting member (79) comprising an axially extending generally tubular portion (110) defining an inner diameter surface (108) and an outer diameter surface (114);
• a first friction clutch (24) selectively engageable and disengagable to drivingly connect and disconnect, respectively, said first and second connecting members, said first clutch comprising at least one first friction member (104) carried for rotation with said first connecting member (74) and at least one second friction member (106) carried for rotation with said second connecting member and extending radially inwardly from said inner diameter surface;
• a second friction clutch selectively engageable and disengageable to drivingly connect and disconnect, respectively, said torque converter impeller input member (54) to said second connecting member, said second clutch comprising at least one third friction member (112) fixed for rotation with said second connecting member and at least one fourth friction member (116) fixed for rotation with said impeller input member;
• said third friction member (112) extending radially outwardly from said outer diameter surface and frictionally engageable with said fourth friction member extending radially inwardly from a shroud member (58) fixed for rotation with said impeller;
• said first friction clutch providing the sole driving connection between said input shaft and said prime mover and the sole driving connection between said input shaft and the turbine of said torque converter;
• means (38, 40, 50) to independently engage and disengage said first and second friction clutches, and
• means defining a first generally radially extending fluid passage (14614148) having a radially inner inlet exposed to a supply of lubricant and a radially outward outlet opening radially inward of said first connecting member exterior diameter surface (100a),
• means defining a second lubricant passage (152-154) extending radially outwardly from an inlet radially outward of the inner diameter surface (108) of said second connecting member, and
• means for automatically opening and closing, respectively, said outlet in response to engagement and disengagement, respectively, of said first clutch.