Called epicyclic CVTs, or planetary CVTs, these transmissions use planet gears to transfer torque. Toyota used one in the Prius back in the late 1990s. Planetary gears work for hybrids, too., GM ...

The GM transmission was the first of its kind to use a hydraulically controlled planetary gearbox, allowing the gears to shift depending on the vehicle's travel speed.

Planetary Automatic Transmissions. ... These gears, which consist of a sun gear, planet gears (and a carrier), and the ring gear, move and engage each other in various relationships.

Early automatic transmissions with names like Hydra-Matic, Dynaflow, ZF, and Hondamatic delivered simplistic driving, but heavy planetary gear systems and torque converters sacrificed fuel efficiency.

The transmission has more gears than Drive, Park, ... Typically, automatic transmissions are built with multiple planetary gear seats that form the different gear ratios the car will switch to.

A modern automatic transmission uses one or more sets of epicyclic or planetary gears (consisting of a sun, planets, and a ring gear) to achieve many different (typically between two and ten) gear ...

When The Planets Align: A Planetary Transmission for the Street Originally published in the May 1999 issue of Hot Rod magazine. HOT ROD Staff Writer Aug 01, 2023 ...

Unlike most manual transmissions as we know them today, the Model T's transmission featured a two-speed planetary gearset, providing a basic high and low-gear configuration.

This article was originally published with the title “ The Cadillac Planetary Gear Transmission ” in Scientific American Magazine Vol. 90 No. 5 (January 1904), p. 88 doi:10.1038 ...

The efficiency of a tooth-on-tooth geared transmission, with the smoothly variable gear ratios of a CVT – minus the belt friction and capable of going all the way down to a zero ratio without ...