Modular arrangement for hydromechanical transmission

A transmission, comprising:

• a differential module that includes a first planetary gear arrangement that includes a first sun gear, a second sun gear, a first set of planet gears, a second set of planet gears, a first planet carrier, and a first ring gear,
• the first planetary gear arrangement being a Ravigneaux planetary gear set;
• a range module that includes a second planetary gear arrangement that includes a third sun gear, a fourth sun gear, a third set of planet gears, a fourth set of planet gears, a second planet carrier, and a second ring gear;
• a first power source path that includes a variator;
• a second power source path that includes at least one mechanical gear,
• the first power source path and the second power source path to provide power to the differential module without passing through the range module,
• the second power source path to provide power to the first planet carrier via a connection member, and
• the connection member being directly connected to the first planet carrier;
• a plurality of clutch assemblies including at least a first clutch assembly and a second clutch assembly,
• the first clutch assembly being selectively engageable to couple at least one gear of the first planetary gear arrangement and at least one gear of the second planetary gear arrangement,
• the second clutch assembly being selectively engageable to couple with at least one gear of the second planetary gear arrangement;
• and
• a drop box module that includes a final output member,
• the differential module being coupleable to the range module to provide a variable rotational power to the range module,
• the range module being coupleable to the drop box module to direct the variable rotational power in a selected range,
• the variable rotational power, in the selected range, to be transmitted through the drop box module to the final output member.

A machine that includes a transmission, the transmission comprising:

• a first power source path that includes a variator;
• a second power source path that includes at least one mechanical gear;
• a differential module that includes a first planetary gear arrangement having a first plurality of gears including a sun gear and a carrier,
• the first planetary gear arrangement being a Ravigneaux planetary gear set,
• the first power source path to provide power to the sun gear,
• the second power source path to provide power to the carrier via a connection member,
• the connection member being directly connected to the first planet carrier, and
• the power to the sun gear and the power to the carrier to be provided from a same direction relative to the differential module;
• a range module that includes a second planetary gear arrangement having a second plurality of gears;
• a plurality of selectively engageable clutch assemblies that are selectively engageable to provide a plurality of directional ranges,
• at least a first clutch assembly, of the plurality of selectively engageable clutch assemblies, being selectively engageable to couple at least one gear from the first planetary gear arrangement with at least one gear from the second planetary gear arrangement,
• at least a second clutch assembly, of the plurality of selectively engageable clutch assemblies, being selectively engageable to couple with at least one gear from the second planetary gear arrangement;
• and
• a drop box module that includes a final output member,
• the differential module being coupleable to the range module to provide a variable rotational power to the range module,
• the range module being coupleable to the drop box module to direct the variable rotational power in a selected direction,
• the variable rotational power, provided in the selected direction, to be transmitted through the drop box module to the final output member.