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How exactly does the VDC and SLIP work?

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Old Dec 16, 2008 | 05:37 PM
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Matthew121's Avatar
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How exactly does the VDC and SLIP work?

some one was trying to tell me that it would make the clutch slip.
this seems like abunch of nonsense to me.
so how exactly do these 2 features work?
and tech info from nissan about it maybe?
thanks for your help guys!
 
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Old Dec 16, 2008 | 07:54 PM
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i think they just apply the brakes
 
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Old Dec 16, 2008 | 07:54 PM
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they sense that the wheels are not turning all the same speed (or close to the same, as turns will cause the wheels to spin uneven). once they sense this, they apply the brakes where they see nessecary
 
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Old Dec 16, 2008 | 07:57 PM
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it reduces the applied power i believe by cutting the fuel and applies brakes if required


search i remember reading it but dont remember where
 
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Old Dec 17, 2008 | 12:50 PM
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Slip is basically traction control that will control drive wheel spin. It uses the ABS sensors and when it detects wheel spin it will first apply the brakes and if that is not enough it will then cut engine power.

VDC is a vehicle stability control that uses many sensors throughout the vehicle such as the ABS sensor, steering wheel angle sensor, yaw sensor, etc. to measure what you are telling the vehicle to do versus what it is actually doing. When those two things do not match, the VDC kicks in. Basically it is there to control oversteer (rear end coming around on you) or understeer (turning the wheel but the car plows ahead). Let's say you have oversteer, you are turning left and the rear end comes out to the right. The car can independently brake individual wheels and/or cut engine power to help bring the car back in line with what you are telling it to do. Usually in a left turn oversteer like this the car will brake the outside front wheel and inside rear wheel to pull the rear end back in line.

That is just a very basic description of it and I'm by no means an engineer but hopefully it give you a good idea of what goes on.
 
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Old Dec 17, 2008 | 10:06 PM
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I deff understand what over and understeer is (Ive raced scca autox solo) for years.
but yea I was curious how it technically works. thanks for the help guys!
 
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