ข้อสอบสามัญเครื่องกล automotive 2/2548
TRANSCRIPT
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c) Cetane Number Octane Number Cetane C16 H34 Cetane Number = 100 Alpha-methyl-napthalene C11H
10 Cetane Number = 0Cetane Number
d) Injection Pressure Cetane Number TDC
2 a) Stoichiometric b) A/F ratio bmep
(20 )
2a) C8H18+12.5O2+12.5 x 3.76 N2 8CO2+9H2O+12.5x3.76N2
Stoichiometic118812
2876.35.12325.12
xx
xxx
+
+=
1/01.15114
1716==
C16
H32
+23.55O2+23.55x3.76N
2 16CO
2+15.1H
2O+23.55x3.76N
2
Stoichiometic 3211612
2876.355.233255.23
xx
xxx
+
+=
43.14224
944.3232==
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2b)
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3. 4 4 100 kW 1500 rpm (sfc) 0.28 kg/kW.h (plunger) (barrel) 4 CC. 2 CC. 4 CC. 200 bar 30 bar . 0.85
1 bar coefficient of compressibility offuel 80x10-6 per bar (20 )
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4. ()
(20 )
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5. 20 (X) (20 )
1. . . , ,. . ,
2. . . . .
3. .
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4. . . . -
. -5.
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6. Parallel Hybrid Car. . . .
7. .
. . .
8. Parallel Hybrid Car
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. .
9. NGV. . . .
10. . . . -. -
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11. . . . -. -
12. Parallel Hybrid Car. 25 %
. 50 %. 75 %. 100 %
13. 4 2 . 1 . 2 . 3
. 4 14.
. . . .
15.
. . . .
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16. . 10 . 12 . 14 . 16
17. .
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18. . . .
. 19.
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20.
. 2 . 3 . 4 . 5
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2. : . 95 : 5. 90 : 10. 85 : 15. 80 : 20
3. 4 4 2 3 .
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4.
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5.
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7. . 2 . 3 . 4 . 5
8. ( Supplemental Restraint System ) .
. . .
9. . . .
. 10. Reed Switch
. G Sensor. Safing Sensor. Spiral Cable. S Sensor
11. Spiral Cable
. 3 . 4 . 5 . 6
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12. . . . .
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17. . . . .
18..
. . .
19.. 20 ./.. 40 ./.. 60 ./.
. 80 ./.20.
. . . .
1. . MTBE2. . 90 : 103. . 4. . 5. . 6. .
7. . 3
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8. . 9. . 10. . Safing Sensor11. . 5 12. . 13. . 14. . 15. . 16. . 17. . 18. . 19. . 40 ./.20. .