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2. Epicyclic gearing - Wikipedia

   en.wikipedia.org/wiki/Epicyclic_gearing

   This planetary gear train consists of a sun gear (yellow), planet gears (blue) and carrier (green) inside a ring gear (red) An epicyclic gear train (also known as a planetary gearset) is a gear reduction assembly consisting of two gears mounted so that the center of one gear (the "planet") revolves around the center of the other (the "sun"). A ...

3. Global Hybrid Cooperation - Wikipedia

   en.wikipedia.org/wiki/Global_Hybrid_Cooperation

   It uses 2 or 3 planetary gearsets in an automatic transmission: one on the internal combustion engine (ICE) side (input split) paired with a second (output split), forming the compound split, and possibly one third additional planetary gearset to multiply the number of fixed gear ratios (up to 4). General Motors has stopped using the "AHS2 ...

4. GM Voltec powertrain - Wikipedia

   en.wikipedia.org/wiki/GM_Voltec_powertrain

   Compared to the first-generation 4ET50/55 transaxles, the overall design has shifted closer to being a parallel hybrid, running more often using mechanical power from the engine supplemented by the electric motors in hybrid mode. A second planetary gear set has been added and the planetary gears are interconnected by coupling the two pinion ...

5. Hybrid vehicle drivetrain - Wikipedia

   en.wikipedia.org/wiki/Hybrid_vehicle_drivetrain

   This allows for a motor with less torque but higher power (and higher maximum rotary speed), i.e. higher power density; Ravigneaux [30]-type planetary gear (planetary gear with 4 shafts instead of 3) and two clutches as used in the Lexus GS450h. By switching the clutches, the gear ratio from MG2 (the traction motor) to the wheel shaft is ...

6. Hybrid Synergy Drive - Wikipedia

   en.wikipedia.org/wiki/Hybrid_Synergy_Drive

   In Generation 1 and Generation 2 HSDs, MG2 is directly connected to the ring gear, that is, a 1:1 ratio, and which offers no torque multiplication, whereas in Generation 3 HSDs, MG2 is connected to the ring gear through a 2.5:1 planetary gear set, [10] and which, consequently, offers a 2.5:1 torque multiplication, this being a primary benefit ...

7. Hybrid vehicle - Wikipedia

   en.wikipedia.org/wiki/Hybrid_vehicle

   In a power-split hybrid electric drive train, there are two motors: a traction electric motor and an internal combustion engine. The power from these two motors can be shared to drive the wheels via a power split device, which is a simple planetary gear set. The ratio can be from 100% for the combustion engine to 100% for the traction electric ...