ma refeream.............in mod normal care este raportul de tractiune al masinii....................dar am gasit, in mod normal are tractiune fata iar cand se pierde stabilitatea tractiunea este 50 50.
Haldex: open front diff with EDL, electronically controlled Haldex clutch center, open rear diff with EDL.
Part-time automatically engaging four-wheel drive.
Is on: all VAG cars with transversely mounted engines, so Audi A3 quattro, S3, TT quattro, VW Golf/Bora 4motion, Seat Leon 4, Skoda Octavia 4x4. Normally FWD but Haldex directs torque to the rear when slip occurs to a maximum torque split of 50/50. Is also the system of use in the latest Volvo AWD models (S60, V70, XC70).
Open diffs are the most common type of diff. Wheels (or axles on a 4x4) can turn freely relative to each other. They have no means of balancing power delivery if one wheel has less traction than the other.
Limited-slip diffs (or LSDs) allow the two wheels to turn relative to each other, but limits the rate at which they are allowed to do so (usually either by some sort of friction or fluid coupling). This ensures that, even if one wheel loses traction, some power is still delivered to the other.
Lockable diffs (not to be confused with EDL) physically lock the two half-axles together. This is fine for off-road travel, but can cause problems when trying to turn on high-grip surfaces - one wheel gets \"dragged\" around.
The electronic differential lock (EDL) employed by VAG is not - as the name suggests - a differential lock at all. Sensors monitor wheel speeds, and if one is rotating substantially faster than the other (i.e. slipping) the EDL system momentarily brakes it. This effectively transfers all the power to the other wheel.
seat leon cupra 4---tdi 180cp