Question

What is the formula for specific fuel consumption (i.s.f.c.)?

(a) i.s.f.c.=\(\frac{60 I.P.}{Wf} \)

(b) i.s.f.c.=\(\frac{60 Wf}{I.P.} \)

(c) i.s.f.c.=\(\frac{120 Wf}{I.P.} \)

(d) i.s.f.c.=\(\frac{120 I.P.}{Wf} \)

The question was posed to me in my homework.

I would like to ask this question from I.C Engine in chapter Internal Combustion Engine of Farm Machinery

Answer 1

The correct choice is (b) i.s.f.c.=\(\frac{60 Wf}{I.P.} \)

For explanation I would say: The total consumption of fuel by an engine under test conditions in a given time is determined by measuring its volume or weight. The specific fuel consumption is defined as the total consumption per hour or per KW developed.