Cars with automatic transmission do not require a clutch, instead a a#39;torque convertera#39; provides a coupling/de-coupling mechanism between the engine and transmission. ... As engine revs rise, the driven fan begins to rotate, but is initially slower than the driving fan because of slip. ... the driving fana#39;s, but not quite 1:1 and that why automatic transmission cars are less economical than manual gearbox cars.
|Title||:||How your car works - Your guide to the components &amp; systems of modern cars, including hybrid &amp; electric vehicles|
|Publisher||:||Veloce Publishing Ltd - 2011|