Decomposition Analysis of an Automotive Powertrain Design ...
Decomposition Analysis of an Automotive Powertrain Design ...
Decomposition Analysis of an Automotive Powertrain Design ...
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Table B.2: Brake drag torque.<br />
Wheel rpm Driving wheel (ft-lb) Non-driving wheel (ft-lb)<br />
0 1.598 1.137<br />
280 2.368 1.467<br />
420 2.753 1.632<br />
560 3.063 1.768<br />
700 3.337 1.884<br />
841 3.611 2.000<br />
2000 3.611 2.000<br />
Table B.3: Gearbox efficiencies, inertias, lug limits, <strong>an</strong>d churning losses.<br />
Gear 1 Gear 2 Gear 3 Gear 4<br />
η 0.95 0.955 0.975 0.965<br />
Igb ft-lb/sec2 0.026 0.0622 0.04 0.045<br />
Lug limit rpm open 700 1000 1250<br />
Tch @ rpm ft-lb ft-lb ft-lb ft-lb<br />
0 0.854 1.17 2.398 2.354<br />
500 0.854 1.17 2.398 2.354<br />
1000 0.979 1.679 3.004 3.292<br />
2000 1.058 1.971 3.508 4.096<br />
3000 1.471 2.283 3.996 4.896<br />
4000 1.775 2.6 4.813 6.213<br />
5000 2.267 3.279 5.704 7.992<br />
7000 4.4 6.4<br />
8000 5.8 8.4<br />
9000 7.3
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