An automatic transmission or transaxle selects
gear ratios according to engine speed, powertrain
load, vehicle speed, and other operating factors. Little effort is needed on the part of the driver, because
both upshifts and downshifts occur automatically. A
driver-operated clutch is not needed to change gears,
and the vehicle can be brought to a stop without
shifting to neutral. This is a great convenience, particularly in stop-and-go traffic. The driver can also manually select a lower forward gear, reverse, neutral,
or park. Depending on the forward range selected,
the transmission can provide engine braking during
deceleration.
An automatic transmission or transaxle selects gear ratios according to engine speed, powertrain load, vehicle speed, and other operating factors. Little effort is needed on the part of the driver, because both upshifts and downshifts occur automatically. A driver-operated clutch is not needed to change gears, and the vehicle can be brought to a stop without shifting to neutral. This is a great convenience, particularly in stop-and-go traffic. The driver can also manually select a lower forward gear, reverse, neutral, or park. Depending on the forward range selected, the transmission can provide engine braking during deceleration.
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