82 Vette-How does a Torque Converter Work
Drifting
Joined: Mar 2011
Posts: 1,347
Likes: 121
From: Kernersville NC
The torque converter serves the same function in an automatic transmission as a clutch/pressure plate does in a straight drive. It is the mechanism that connects the power genereated by the engine to the transmission. See the link below.
http://auto.howstuffworks.com/auto-p...-converter.htm
http://auto.howstuffworks.com/auto-p...-converter.htm
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,116
From: Crossville TN
It is a 'fluid coupling' with pressurized oil in it. The "pump" section is connected to the engine output/crank/flex plate, so it turns as the engine turns. It slings oil at the "turbine" and that oil forces the turbine to turn in the same directions as the "pump". The smaller "stator" piece redirects the oil from the turbine back to the pump to keep the flow of oil going in the proper direction.
At rotational speeds significantly above the 'stall speed', the turbine is turning approximately the same speed as the pump (and engine). When there is a range shift, the torque converter dampens that rotational speed change because of the hydraulic coupling...rather than a mechanical coupling, like a clutch.
Auto trannies with "lockup" have an additional clutch, in the torque converter area, that mechanically connects the turbine and pump, so that there is NO hydraulic efficiency loss.
Race Director
Joined: Apr 2007
Posts: 11,150
Likes: 890
From: South Western Ontario
Put 2 fans with the blades facing each other. Turn one on. See how the other one turns? That's basically what a torque converter does but with trans fluid instead of air.
Last edited by lionelhutz; Apr 17, 2012 at 12:49 PM.
Race Director
Joined: Feb 2006
Posts: 12,239
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From: Chino CA
