Hey everybody, i was online reading about torque converters.. and i found an interesting article on this website called "howstuffworks.com".. anyway... here is a clipping of it.. it says that auto trannys have more torque due to the torque multiplication factor... obviously there is only one other tranny to compare it to, and that is a stick shift... it goes to say that modern torque converters multiply torque by two or 3 times !!! now that sounds sweet smile.gif

"Benefits and Weak Points
In addition to the very important job of allowing your car come to a complete stop without stalling the engine, the torque converter actually gives your car more torque when you accelerate out of a stop. Modern torque converters can multiply the torque of the engine by two to three times. This effect only happens when the engine is turning much faster than the transmission. "

the link to the entire article is here... http://www.howstuffworks.com/torque-converter3.htm


bye bye to all.

 

Don't forget that it's still an automatic transmission- Not a direct mechanical connection means wasted energy.

 

Probably torque converters do, and it is just to compensate for the mechanical energy loss, and also very important, gear ratios are longer for autos (as they have less speeds to keep auto trannys weight, size and price).

 

The part you are missing...is information.

GEARING can create torque. There is much more Torque in 1st gear than 5th. The gears "create" torque. The same way an automatic transmissions torque converter "create"s torque.

Calm down and getyour undies out of a bunch.

It does not state that Auto Trannies have more torque than manual transmissions, only that they have more torque than the engine itself is capable of producing.

 

There are three components to a converter the pump, turbine and stator. In the stator ther is a one way clutch called a sprag, it keep the stator from turning in the reverse direction. The pump circulates the fluid, it is in the front of the convertor, the turbine actually is what makes the viscous coupling. The energy given off in the form of fluid from the turbine is forced through the stator to reverse the fluid direction, creating the multiplication in torque. The actual multiplication factor is dictated by the pitch of the fins on the stator, the OEM comverter is usually 1.6 to a 2.0 factor.

A stall convertor is made by adjusting the blade pitch of the turbine and pump, to shift the point at which the viscous coupling happens.

 

thanks for the kewl info, i'll try to keep my undies together random smile.gif hahaha


laterz !

 

Don't get me started on auto trannies and the converters here. Those converters sap so much power at low speed it's not funny, thats why level ten will be my friend .