Table 1 Hydrogen, Syzygium cumini (jamun), and diesel fuel properties

1

Molecular weight (gm/mol)

160

1.987

918.54

2

Stoichiometric air fuel ratio

33.5

13.8

N/A

3

Flame velocity (cm/s)

27

260

34

4

Auto-ignition temperature (K)

534

567

700–830

5

Heat of combustion (kJ/kg)

40.3

125

64

6

Density of gas at NTP (g/cm³)

0.85

0.078

0.74

7

Octane number

–

120

55

8

Cetane number

45–55

–

45

9

Boiling point (K)

550–630

21.75

340—405

10

Specific gravity

0.78

0.089

0.918