System and apparatus for lubrication of a hybrid transmission

A transmission for a powertrain system, comprising:

• a simple planetary gearset arranged to transfer mechanical power between a first torque generating device, a second torque generating device, a third torque generating device, and an output member;
• a transmission case having an outer portion, a first side portion, and an engine side portion, wherein the planetary gearset is arranged in the transmission case;
• and
• a fluidic distribution system;
• wherein the simple planetary gearset includes a sun gear, a plurality of planetary pinion gears arranged on a planetary carrier, and a ring gear;
• wherein the planetary carrier is arranged on a first rotatable input member defining a first axis;
• wherein the first rotatable input member has an axial conduit disposed therein;
• and
• wherein the first rotatable input member extends between the first side portion and the engine side portion of the transmission case, and includes a first end thereof projecting through the first side portion of the transmission case;
• wherein the first end of the first rotatable input member includes an orifice fluidly coupled to the axial conduit disposed therein;
• wherein the fluidic distribution system is arranged to supply a lubricant to the planetary gearset via the axial conduit disposed within the first rotatable input member;
• and
• wherein the fluidic distribution system comprises:
• a longitudinal conduit arranged within the transmission case, a banjo bolt, an externally-disposed fluidic transfer device having a cover plate and a radial tube, the axial conduit disposed within the first rotatable input member, and a first radial conduit disposed within the first rotatable input member,
• wherein the first radial conduit is in fluidic communication with the axial conduit,
• wherein the cover plate is sealably secured to the first side portion of the transmission case overtop of the axial conduit disposed within the first rotatable input member such that a first end of the radial tube fluidly communicates with the axial conduit,
• wherein a second end of the radial tube is secured to the transmission case via the banjo bolt such that the second end of the radial tube fluidly communicates with the longitudinal conduit,
• wherein the lubricant is supplied from a pressurized source that is fluidly connected to the longitudinal conduit, and
• wherein the lubricant flows from the pressurized source to the planetary gearset via the longitudinal conduit arranged within the transmission case, the banjo bolt, the cover plate including the radial tube, the axial conduit disposed within the first rotatable input member, and the first radial conduit disposed within the first rotatable input member.

An input split hybrid transmission for a powertrain system of a vehicle, comprising:

• a simple planetary gearset arranged to transfer mechanical power between an internal combustion engine, a first electric machine, a second electric machine, and an output member coupled to a driveline of the vehicle;
• a transmission case having an outer portion, a first side portion, and an engine side portion;
• and
• a fluidic distribution system;
• wherein the planetary gearset includes a sun gear, a plurality of planetary pinion gears arranged on a planetary carrier, and a ring gear;
• wherein the planetary carrier is arranged on a first rotatable input member defining a first axis;
• wherein the first rotatable input member has an axial conduit disposed therein;
• and
• wherein the fluidic distribution system is arranged to supply a lubricant to the planetary gearset via the axial conduit disposed within the first rotatable input member;
• wherein the planetary gearset is arranged in the transmission case;
• wherein the first rotatable input member extends between the first side portion and the engine side portion of the transmission case, and includes a first end thereof projecting through the first side portion of the transmission case;
• wherein the first end of the first rotatable input member includes an orifice fluidly coupled to the axial conduit disposed therein;
• and
• wherein the fluidic distribution system comprises:
• a longitudinal conduit arranged within the transmission case, a banjo bolt, an externally-disposed fluidic transfer device having a cover plate and a radial tube, the axial conduit disposed within the first rotatable input member, and a first radial conduit disposed within the first rotatable input member,
• wherein the first radial conduit is in fluidic communication with the axial conduit,
• wherein the cover plate is sealably secured to the first side portion of the transmission case overtop of the axial conduit disposed within the first rotatable input member such that a first end of the radial tube fluidly communicates with the axial conduit,
• wherein a second end of the radial tube is secured to the transmission case via the banjo bolt such that the second end of the radial tube fluidly communicates with the longitudinal conduit,
• wherein the lubricant is supplied from a pressurized source that is fluidly connected to the longitudinal conduit, and
• wherein the lubricant flows from the pressurized source to the planetary gearset via the longitudinal conduit arranged within the transmission case, the banjo bolt, the cover plate including the radial tube, the axial conduit disposed within the first rotatable input member, and the first radial conduit disposed within the first rotatable input member.