![]() ![]() Have a look through these pages to learn more about the automatic transmission. An automatic transmission (sometimes abbreviated to auto or AT) is a multi-speed transmission used in internal combustion engine-based motor vehicles that does not require any driver input to change forward gears under normal driving conditions. The current automatic transmission has grown into a learning computer, with its sole purpose to optimize the drivers experience. Only think of the fact it started with 2 speeds to the dazzling 9 speeds of today and you might understand why we are so passionate about this technical masterpiece. Without a transmission, cars would be limited to one gear ratio, and that ratio would have to be selected to allow the car to travel at the desired top speed. The most commonly known automatic gearbox is hydraulically operated, equipped with a fluid coupling or torque converter, and a set of planetary gear sets to provide a range of gear ratios.Įver since the beginning the Automatic Transmission has made an interesting progress. Just like that of a manual transmission, the automatic transmission's primary job is to allow the engine to operate in its narrow range of speeds while providing a wide range of output speeds. A genuine step forward in a time where rocky manual shifting regularly led to nerve (and car-) breakdowns. According to industry estimates 17.3 of the vehicles sold in India in 2019 had automatic transmissions, this is a staggering increase when compared to the year 2011 where the market for auto transmissions hovered at just 1.4. The so-called Hydra-Matic had a fluid coupling and three hydraulically controlled planetary gear sets, which resulted in four forward speeds plus reverse. Automatic Transmission has taken India by storm as more people relish the ease of driving that is provided by it. It was not until 1940 after General Motors invested in the idea, that the first mass-produced fully automatic transmission was launched. The idea was born, but as with so many inventions, Sturtevant was too far ahead of his time. Sturtevant designed world’s first automatic transmission. Before we go into the specs of this great transmission, just a short dive into history.
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