Schtuv Posted July 27, 2006 Share Posted July 27, 2006 OK - I'm not the most technical/car person in the world, but I kinda get how things work, and I know I could probably look this up, but I've been wondering: Automatic gearboxes use torque converters to drive a car forwards, and don't have a clutch installed. I guess this is why your have automatic-forwards-creep when you take your foot off the brake pedal. So what exactly goes on when you have the car in neutral or park? Yeah - I get the bit where 'Park' locks the wheels, but do P and N have a clutchy thing somewhere in the line that disconnects the engine from the wheels? I assume that revving the car in P or N won't cook the transmission oil, like holding the foot brake and accellerator when in drive? Quote Link to comment Share on other sites More sharing options...
carl0s Posted July 27, 2006 Share Posted July 27, 2006 There are something like five clutches in the non-turbo A340(e) box and seven in the turbo version. The clutches are used on gear changes and I suppose probably on engage/disengage of the engine too. I would have thought your assumptions to be correct though. Quote Link to comment Share on other sites More sharing options...
Scoboblio Posted July 27, 2006 Share Posted July 27, 2006 As far as I know, even though an automatic has no clutch the gearbox works on the same principal as a manual, so will still offer a neutral gear... this site's very good; http://auto.howstuffworks.com/automatic-transmission.htm Quote Link to comment Share on other sites More sharing options...
Schtuv Posted July 27, 2006 Author Share Posted July 27, 2006 I didn't think of looking at howstuffworks ... Think I'm starting to get it, after look at the status of the flywheel, and hoofer-doofer-with-blades next to it in the animated diagrams. Quote Link to comment Share on other sites More sharing options...
martin_a Posted July 27, 2006 Share Posted July 27, 2006 If you can rev the car on level ground in N and you do get the creep forward ye box is fubar! m. Quote Link to comment Share on other sites More sharing options...
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