How Automatic Transmissions Work

If you have ever driven a car with an automatic transmission, then you know that there are two big differences between an automatic transmission and a manu­al transmission:There is no clutch pedal in an automatic transmission car. There is no gear shift in an automatic transmission car. Once you put the transmission into drive, everything else is automatic.

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How an Automatic Transmission Works
In this video, I explain how an automatic transmission works, showing the various gears and the valve body.

How Automatic Transmissions Work! (Animation) This animation explains the principles of automatic transmissions that use a Ravigneaux planetary gear set. Contents 1) Torque converter, multi-plate clutches 2) Multi-plate brakes, band brakes 3) Ravigneaux gear set 4) Large and small sun gear 5) Planets and planet carrier 6) Ring gear 7) gear ratios

ZF 8HP 8-Speed Automatic Transmission
ZF has developed a new automatic transmission for cars with eight speeds that can achieve more than 6% fuel savings. The priority aim in development, however, was not the maximum number of gears, but minimum consumption. ZF engineers had set the bar high to produce a new benchmark for automatic car transmissions. The second generation of the ZF 6HP 6-speed transmission, that entered production only in 2006, defines standards that are hard to top: reaction times faster than human perception, direct engine linkage by early-stage torque converter lock-up and intelligent, adaptive control software, that almost reads the driver's intentions from his foot. But the new transmission is capable of even more - it saves (even more) fuel. It also guarantees ultimate driving enjoyment, as well as the variability needed to be able to use future technologies. ions/8hp_automatic_transmission.html

How Car Transmission System Works
Know how the transmission system inside an automobile works. Do not forget to hit like if you found this video useful. Please Note: The differential gear system was mistakenly animated, and the actual rotation of the pinion and the ring gear is opposite to what is shown here.