Page 190 - Biofuels Refining and Performance

Processing of Vegetable Oils as Biodiesel and Engine Performance 173

28
Diesel 20% blend
26 10% blend 30% blend
40% blend
24

22
Efficiency (%) 20

18
16

14
12

10
Karanja Jatropha Putranjiva
Oils
Figure 6.4 Brake thermal efficiency versus brake horsepower of veg-
etable oil and diesel blends at 1200 rpm, 45 bTDC, 20 compression
ratio, and 1.4-kW brake power.

700
Diesel
650
20% K blend
20% J blend
600
20% P blend
BSFC (gm/kWh) 500 J-Jatropha
K-Karanja
550
P-Putranjiva
450
400

350
300
250
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Brake power (kW)
Figure 6.5 Brake specific fuel consumption versus brake power of diesel,
20% karanja oil, jatropha oil, and putranjiva oil blends at 1200 rpm,
45 bTDC, and 20 compression ratios.