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4. Requisiti di progettazione
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CAPITOLO 1 - TIPOLOGIE COSTRUTTIVE |
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1.2.13 - Confronto |
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Nella tabella seguente sono riassunte le principali differenze tra alcuni degli AIV fin qui presentati:
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GM EV1 |
Audi A8 |
Audi A2 |
Class |
ZEV |
F |
C |
Weight and (Reduction) |
130 kg (40%) |
249 kg (38 %) |
153 kg (42 %) |
Total length [mm] |
4309 |
5000 |
3750 |
Production
Quantity / day
Quantity / year |
n.a.
500 |
80
15000 |
300
60000 |
Number of parts |
162 |
334 |
238 |
Composition
Extrusion
Casting
Sheet |
25%
25%
50% |
22.7%
21.8%
55.5% |
17.8%
22.1%
60.1% |
Automatic assembly ratio |
n.a. |
20% |
80% |
Processing of extrusions |
n.a. |
17 %: machining |
8 %: hydro-forming after 3 dimensional bending |
Straight extrusions |
n.a. |
49% |
84% |
Casting |
n.a. |
VACURAL |
Vacuum die cast |
Joint
Spot Welding
MIG weld length
Laser weld length
Adhesives
Clinching
SPR |
2000 points
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-
150 m
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150 |
500 points
70 m
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-
178 points
1100 |
-
20 m
35 m
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-
1500 |
Confronto tra alcuni AIV
fonti:
- The Japan Aluminium Association, Automotive Committee, 2000.
- Saturn Corporation, 1996.
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