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Using the EERs from Table 5-1 and the average gasoline fuel economy of 27.42 mpg for current vehicles, 30.16 mpg for 2010 gasoline subcompact vehicles, and 45.24 mpg for 2010 gasoline super efficient vehicles, the fuel economies shown in Table 5-5 are calculated.  Five fuel economy cases are defined below:

Case a – Current vehicles and current EERs

Case b – 2010 subcompact vehicles using 2010 high EER estimates

Case c – 2010 subcompact vehicles using 2010 low EER estimates

Case d – 2010 super efficient vehicles using 2010 high EER estimates

Case e – 2010 super efficient vehicles using 2010 low EER estimates

Table 5-5:  Fuel economy cases used in fuel cycle analyses

Fuel (unit)

Vehicle

Case

LHV (Btu/unit)

EER

Fuel Economy

Gasoline

Conventional ICE

a

114,244

1.00

27.42 mi/gal

Diesel

IDI CI

a

130,800

1.37

43.01 mi/gal

FT Diesel

a

118,800

LPG

Conventional ICE

a

83,200

0.98

19.57 mi/gal

Methanol

a

57,000

Electric

Battery EV

a

3,412

2.85

2.33 mi/kWh

Gasoline

Conventional ICE

b

114,244

1.00

30.16 mi/gal

Diesel

IDI CI

b

130,800

1.37

47.31 mi/gal

FT Diesel

IDI CI

b

118,800

1.37

42.97 mi/gal

LPG

Conventional ICE

b

83,200

1.08

23.72 mi/gal

Methanol

SR/PEM Fuel Cell

b

57,000

1.54

23.18 mi/gal

Hydrogen

PEM Fuel Cell

b

51,600

1.74

23.70 mi/lb

Electric

Battery EV

b

3,412

2.90

2.61 mi/kWh

Gasoline

Conventional ICE

c

114,244

1.00

30.16 mi/gal

Diesel

IDI CI

c

130,800

1.21

41.79 mi/gal

FT Diesel

IDI CI

c

118,800

1.21

37.95 mi/gal

LPG

Conventional ICE

c

83,200

0.98

21.53 mi/gal

Methanol

SR/PEM Fuel Cell

c

57,000

1.39

20.92 mi/gal

Hydrogen

PEM Fuel Cell

c

51,600

1.50

20.43 mi/lb

Electric

Battery EV

c

3,412

2.40

2.16 mi/kWh

Gasoline

Conventional ICE

d

114,244

1.00

45.24 mi/gal

Diesel

IDI CI

d

130,800

1.37

70.97 mi/gal

FT Diesel

IDI CI

d

118,800

1.37

64.46 mi/gal

LPG

Conventional ICE

d

83,200

1.08

35.59 mi/gal

Methanol

SR/PEM Fuel Cell

d

57,000

1.54

34.76 mi/gal

Electric

Battery EV

d

3,412

2.90

3.92 mi/kWh

Gasoline

Conventional ICE

e

114,244

1.00

45.24 mi/gal

Diesel

IDI CI

e

130,800

1.21

62.68 mi/gal

FT Diesel

IDI CI

e

118,800

1.21

56.93 mi/gal

LPG

Conventional ICE

e

83,200

0.98

32.29 mi/gal

87

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