Need help regarding automatic transmission

AI Thread Summary
Automatic transmissions differ significantly from manual transmissions in terms of efficiency and design. Articles suggest that continuously variable transmissions (CVTs) generally do not match the efficiency of manual transmissions, which can reach up to 98% in certain gears. The efficiency of CVTs is often proprietary, making it difficult to compare directly. Additionally, manual transmissions do not require water cooling, while some CVTs do, indicating lower efficiency. Understanding these differences is crucial for preparing a presentation on automatic versus manual transmissions.
vikkispike117
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hiiii...
i needed some help in collecting some articles related to automatic transmission...i need the basic idea of it,and comparison with manual transmission...
 
Engineering news on Phys.org
can i have a basic idea of preparing ppt about automatic transmission...what an all should be included in it
 
The following website has a good discussion of the various types of continuusly variable transmissions (CVTs)
http://en.wikipedia.org/wiki/Continu...e_transmission
None of the CVTs have efficiencies as high as manual transmissions: about 96% in all but the 1:1 gear which is about 98%. Manufactirers of CVTs will not disclose the efficiencies of their designs; it is proprietary.

Note that manual transmissions in standard automobiles do not require water cooling. If a particular CVT requires water cooling, that is proof that it is less efficient than a manual transmission.
 
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