Fill in the Gaps 58. Complete the following statement about the powerflow of the Lepelletier system using the following words. Words: Carrier, gearset, Compound, Driven, Drives, First, Gearset, Input, Output, Planetary, Rear, Reduction, Reverse, Ring, Rotates, Second, Single, Small, Sun The power flow through a Lepelletier gearsetis based on splitting the input into two ratios: the ratio of the single set and the ratio of the second. The overall ratio is the Compoundof the two. First Gear – For first gear, the rear Carrieris held. This transfers torque from the sun gear in the rear planetary assembly to the ring gear. The transmission is now in Firstgear. Second Gear – When shifting into Secondgear, the large sun gear of the rear planet is held. The sun gear now transfers torque through the short and long Planetarypinions to the ring gear, which is the output. Third Gear – Third gear is achieved by locking the Inputshaft and both of the sun gears in the compound gearset together. This forces both of the Rearplanetary assemblies to lock and drive the output Ringgear. Fourth Gear – For fourth gear, the input is transferred from the Singlegearset’s carrier to the large sun gear and the planetary carriers in the compound gearset. The ring gear is then driven with a slight Reduction. Fifth Gear – In fifth gear, the input moves from the single planetary unit’s carrier to the Smallsun gear and the planetary carrier in the compound gearset. The ring gear is then Drivenat an overdrive. Sixth Gear – Sixth speed is made by holding the front Sungear in the compound gearset. The input shaft is locked to the carrier of the compound gear. The carrier then Drivesthe ring gear to provide for an overdrive output. Reverse – For Reverse, the ring and planet gears of the simple planetary rotate together. The single sun gear is held and Rotatesthe carrier and the sun gear of the compound planetary gear (rear) assembly. The rear planet carrier is also held. The long planets in the Compoundgear rotate with the rear sun gear. This causes the ring gear to rotate backward and drives the Outputshaft in reverse.
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