POWERTRAINS HAVING A BALL-TYPE CONTINUOUSLY VARIABLE TRANSMISSION AND A RAVIGNEAUX PLANETARY GEAR SET

摘要

Provided herein are is a powertrain including: an engine; a continuously variable planetary transmission (CVP) having a plurality of balls, each ball provided with a tiltable axis of rotation, each ball in contact with a first traction ring assembly and a second traction ring assembly, and each ball operably coupled to a carrier; and a ravigneaux gear set having a common ring gear, a ravigneaux planet carrier supporting a first set of planet gears coupled to the common ring gear and a second set of planet gears coupled to the common ring gear, a first ravigneaux sun gear coupled to the first set of the planet gears, a second ravigneaux sun gear coupled to the second set of the planet gears, wherein the engine is operably coupled to the first traction ring assembly and the second traction ring assembly is coupled to the first ravigneaux sun gear.