For an 8-cylinder 4-stroke diesel engine, the following data are given: Cylinder diameter D = 580 mm Stroke length S = 6
Posted: Tue Apr 26, 2022 4:00 pm
For an 8-cylinder 4-stroke diesel engine, the following data are
given:
Cylinder diameter D = 580 mm
Stroke length S = 640 mm
Indicated mean pressure pmi = 2.2 MPa
Effective average pressure pme = 2.0 MPa
Rotation frequency n = = 6.0 s ‐ 1
Fuel consumption (v / 80%) be = 195 g / kWh
The calorific value of the fuel hn = 42.7 MJ /
kg
Calculate:
a) Maximum engine power (Pe) in kW.
b) Mechanical efficiency.
c) Effective thermal efficiency.
d) How much fuel must be supplied to the engine at 80%, 100%, 50%
and 25% load and constant speed?
(use the curve to find specific fuel consumption (SFOC) for the
different load cases. The curve shows increased
consumption in relation to the lowest value which is at approx. 80%
load)
30 25 20 (+ + SFOC kWh 15 10 20 30 40 50 10 90 100 60 Output)
given:
Cylinder diameter D = 580 mm
Stroke length S = 640 mm
Indicated mean pressure pmi = 2.2 MPa
Effective average pressure pme = 2.0 MPa
Rotation frequency n = = 6.0 s ‐ 1
Fuel consumption (v / 80%) be = 195 g / kWh
The calorific value of the fuel hn = 42.7 MJ /
kg
- For An 8 Cylinder 4 Stroke Diesel Engine The Following Data Are Given Cylinder Diameter D 580 Mm Stroke Length S 6 1 (10.86 KiB) Viewed 47 times
a) Maximum engine power (Pe) in kW.
b) Mechanical efficiency.
c) Effective thermal efficiency.
d) How much fuel must be supplied to the engine at 80%, 100%, 50%
and 25% load and constant speed?
(use the curve to find specific fuel consumption (SFOC) for the
different load cases. The curve shows increased
consumption in relation to the lowest value which is at approx. 80%
load)
30 25 20 (+ + SFOC kWh 15 10 20 30 40 50 10 90 100 60 Output)