Using planetary gears gives the Antonov design the advantage of a higher engine torque limit (more gear teeth bearing load), at the expense of greater complexity.
By now the Evo has a six - speed» box, Super-Active Yaw Control
using a planetary gear set with a greater torque transfer capacity, and MIVEC variable valve timing.
Compared to the previous system it now
uses a planetary gear differential that can transfer almost twice the torque between the rear wheels.
Aiding efficiency is an integrated auxiliary gearbox
using planetary gearing.
Not exact matches
Automatic transmission
uses a torque converter and
planetary gears, while manual transmission
uses a clutch and a
gear box.
Why then do automatic transmissions
use torque converters and
planetary gears if they're less efficient?
The power sources work individually on say the ring and the
planetary carrier, while the sun
gear is
used for power take - off to the wheels.
The gearbox, which is shared with both the 2013 Versa sedan and 2013 Sentra,
uses a fixed
planetary gear ratio during launch before switching to infinitely variable ratios.
But instead of a single giant lump of metal powering the Polestar 1, the performance coupe
uses a Volvo Drive - E four - cylinder engine to drive the front wheels, and a pair of electric motors combined through a
planetary gear set to drive the rear wheels.
Uses an electronically controlled
planetary gear set that includes the traction motor and power management electronics in one compact assembly
Instead of
using one or more
planetary gear sets like a traditional transmission, a CVT
uses pulleys and steel belts to provide an infinite number of «
gear ratios».
With two pure mechanical
gear points, infinitely variable ratio in between, start - stop, regenerative braking, pure electrical mode, electric power assist, 100 % towing capability — the hybrid one seems to be better
use of quite expensive
planetary mechanics.
It
uses four
planetary gears to deliver an exceptionally wide
The transmission is made up of two 60 - kilowatt electric motors, three
planetary gearsets and four fixed
gears that
use the same space as GM's six - speed automatic transmission.
The center distance and vertical drop between the engine and output axes were designed to be common; this design approach enables the
use of a common chain transfer design and final drive
gearing, which provided a wide range of final drive sprocket and
planetary gear sets allowing an effective final drive ranging from 2.64 to 3.50.
Two
planetary gear units are
used in the system.
Instead of the standard bevel
gears used in differential transmissions, the engineers developed a spur
gear differential in which additional torque can be applied from outside via a superimposed
planetary gearbox.
An all - new 111 - kW electric drive unit
uses two electric motors working with
planetary gear sets to mix - n - match power delivery depending on need.
Conventional torque vectoring systems
use a set of
planetary gears either side of the differential to achieve only very low levels of over-speeding.
Cadillac feeds that power through GM's special Electric Variable Transmission, which
uses two electric motors to move three
planetary gears that have an infinite ratio of synchronous shifting.
Unlike the T2 Torsen where the torque split is a nominal 50:50, in the T3 Torsen the torque split, due to the
use of the
planetary gear set, is an actual asymmetric 40:60 front - rear torque split (i.e., when grip is equal on both front and rear axles, 40 % of torque is sent to the front axle, and 60 % to the rear).
Borrowing a trick from the performance - oriented LC 500h, the hybrid LS
uses a unique transmission that combines four fixed
gears with a
planetary gearset, the latter piece common to all Toyota and Lexus hybrids from the first Prius.
The
planetary -
gear starter
uses the crank - hold feature.
[1] BorgWarner's original design called for
using both a software controlled electromagnetic multi-disc (also called multi-plate) clutch pack and a
planetary or bevel
geared center differential together.
[1] Instead of a
planetary or bevel
geared center differential, the system
uses a variable intelligent locking center multi-disc differential.
The gasoline engine works in tandem with a two - motor, continuously variable
planetary -
gear transmission that
uses one electric motor to provide traction power to the wheels and one motor to change the transmission's modes.
The tests evaluated the Polestar 1's torque vectoring system, which
uses two rear electric motors that feature individual
planetary gear sets.
The alternator
uses a larger front bearing, a cooling fan and die - cast aluminium cooling fins for the rectifier; the
planetary -
gear starter
uses a crank - hold feature.
Toyota, Ford, and GM instead
use a variation of a power - split design that allows some power to flow mechanically and some electrically when the gas engine is running via a
planetary gear arrangement that allows for a continuous range of effective
gearing ratios between the engine and the wheels.
The two - motor EVT also
uses three
planetary gears and is mated to a 2.0 L turbo 4 - cylinder engine with spark - ignited direct injection and variable valve technology.