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How to dynamically control understeer/oversteer in AWD?

Klaus,

I don't understand how the cornering limits are soooo much higher with AWD. The limits are defined pretty much by the tire patch. If you are going into a tight turn too fast I don't see how AWD can help. If you are powering through a turn, sure; distributing the same overall force through 4 patches helps a lot.

My question was not about absolute limits. It was about being able to add under/oversteer on the fly. Your two foot technique won't work on a car that does not have traction control. Let's keep it simple: a straight 50-50 AWD with no traction control, no ABS. Let's go further and assume a 50-50 weight distribution and a 50-50 sway bar bias. Perfectly neutral handling. So, you are going into a tight turn that should be doable except you hit the brakes to avoid a deer. That lightens the rear and it slides out. Seems to me that all one can do is countersteer, right? You get off the brake but that only helps to restore neutrality, not correct for the oversteer in progress.

I am just focusing on attitude control, not absolute limits. AWD is the clear winner overall in the absolute.

Bill






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New How to dynamically control understeer/oversteer in AWD?
posted by  garlandw subscriber  on Mon Mar 17 14:49 CST 2008 >


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