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Decomposition Analysis of an Automotive Powertrain Design ...

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Ie<br />

Tacc<br />

Ii I t I gb Ids Ifd<br />

I d<br />

r e<br />

T<br />

Ν e e<br />

Ti<br />

Ν e<br />

Tgb<br />

Νt<br />

η gb<br />

ξ<br />

gb<br />

Tfd<br />

Ν ds<br />

η<br />

ξ fd<br />

fd<br />

Td<br />

Νd<br />

Fd<br />

Figure 5. Schematic <strong>of</strong> power flow through the powertrain.<br />

1.2<br />

0.8<br />

Perform<strong>an</strong>ce<br />

St<strong>an</strong>dard<br />

Traction Coefficient<br />

(Fd/Fnd)<br />

0.4<br />

0.0<br />

-0.4<br />

Acceleration<br />

Braking<br />

-0.8<br />

-1.2<br />

-0.6<br />

-0.3<br />

0.0<br />

Slip<br />

0.3<br />

0.6<br />

Figure 6. Traction coefficients, µ(S), as a function <strong>of</strong> slip for two radial tires.

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