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buletinul institutului politehnic din iaşi - Universitatea Tehnică ...

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Bul. Inst. Polit. Iaşi, t. LVIII (LXII), f. 4, 2012 167<br />

On the other hand, the evolution of specific fuel consumption values for<br />

different states of the propulsion system is highlighted in Fig. 12. It can thus be<br />

noted that increased stability during operation of the propulsion system, values<br />

of these inputs are reduced, which is very advantageous.<br />

effective specific fuel consumption, ce [g/kWh]<br />

190<br />

185<br />

180<br />

175<br />

170<br />

165<br />

160<br />

155<br />

unstable operation<br />

stable operation<br />

very stable<br />

operation<br />

Fig. 12 – Evolution of effective specific fuel consumption values<br />

for different states of the propulsion system.<br />

Using the Fig. 13 a,b,c shown the variation of these inputs for the three<br />

states of the system, and that each state consumption values are very close<br />

together, being practically constant regardless of equipment and characteristics<br />

of propulsion system that obtains the condition of its.<br />

173<br />

180<br />

160<br />

140<br />

120<br />

100<br />

80<br />

60<br />

40<br />

20<br />

171.16 0<br />

173<br />

a.<br />

166.2<br />

186.4<br />

200<br />

180<br />

160<br />

140<br />

120<br />

100<br />

80<br />

60<br />

40<br />

20<br />

183.9 0<br />

186.4<br />

161.1<br />

181.5<br />

180162<br />

160<br />

140<br />

120<br />

100<br />

80<br />

60<br />

40<br />

20<br />

0<br />

c.<br />

Fig. 13 – The range of values of effective specific fuel consumption<br />

correspon<strong>din</strong>g of the three states of propulsion system.<br />

b.<br />

161

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