MULTI-SPEED PLANETARY TRANSMISSION

A multi-speed transmission (100, 300) including a plurality of planetary gearsets (108, 110, 112, 114, 308, 310, 312, 314) and a plurality of selective couplers (162, 164, 166, 168, 170, 172, 362, 364, 366, 368, 370, 372) to achieve at least nine forward speed ratios is disclosed. The plurality of p...

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Bibliographic Details
Main Authors EARHART, David E, TRYON, Eric S
Format Patent
LanguageEnglish
French
German
Published 25.04.2018
Subjects
BLASTING
ENGINEERING ELEMENTS AND UNITS
GEARING
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MECHANICAL ENGINEERING
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:A multi-speed transmission (100, 300) including a plurality of planetary gearsets (108, 110, 112, 114, 308, 310, 312, 314) and a plurality of selective couplers (162, 164, 166, 168, 170, 172, 362, 364, 366, 368, 370, 372) to achieve at least nine forward speed ratios is disclosed. The plurality of planetary gearsets (108, 110, 112, 114, 308, 310, 312, 314) may include a first planetary gearset (108, 308), a second planetary gearset (110, 310), a third planetary gearset (112,312), and a fourth planetary gearset (114, 314). The plurality of selective couplers (162, 164, 166, 168, 170, 172, 362, 364, 366, 368, 370, 372) may include a number of clutches (166, 168, 170, 172, 366, 368, 370, 372) and a number of brakes (162, 164, 362, 364). The multi-speed transmission (100, 300) may have four planetary gearsets (108, 110, 112, 114, 308, 310, 312, 314) and six selective couplers (162, 164, 166, 168, 170, 172, 362, 364, 366, 368, 370, 372). The six selective couplers (162, 164, 166, 168, 170, 172, 362, 364, 366, 368, 370, 372) may include four clutches (166, 168, 170, 172, 366, 368, 370, 372) and two brakes (162, 164, 362, 364).
Bibliography:Application Number: EP20170193099