Ravigneaux planetary gear set

Ravigneaux planetary gear set
A system which is composed of two sun gears of different diameters, one internal gear, and several planet pinions.

Dictionary of automotive terms. 2015.

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  • planetary gear set — A central externally toothed sun gear, an internally toothed outer ring gear, and several intermediate planet gears which are evenly spaced and supported by a planet carrier; they are in constant mesh with the sun gear and the internal gear See… …   Dictionary of automotive terms

  • Ravigneaux planetary gearset — The Ravigneaux gearset is a double planetary gear set commonly used in automatic transmissions. This planetary gear set is constructed from two gear pairs, ring planet and planet planet. The Ravigneaux set has two sun gear wheels, a large sun and …   Wikipedia

  • planetary set — See ravigneaux planetary gear set …   Dictionary of automotive terms

  • gearset — A group of two or more gears used to transmit power. Also see planetary gear set ravigneaux planetary gear set simpson gear set simpson planetary gear set …   Dictionary of automotive terms

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  • Epicyclic gearing — or planetary gearing is a gear system that consists of one or more outer gears, or planet gears, revolving about a central, or sun gear. Typically, the planet gears are mounted on a movable arm or carrier which itself may rotate relative to the… …   Wikipedia

  • Automatic transmission — An automatic transmission (commonly AT or Auto ) is an automobile gearbox that can change gear ratios automatically as the vehicle moves, freeing the driver from having to shift gears manually. Similar but larger devices are also used for heavy… …   Wikipedia

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