Question

A historic single cylinder engine works on the lenoir cycle with 30 cm bore and 90 cm stroke and no clearance volume. The combustion process starts half-way through the intake-power stroke, which can be assumed as a constant volume heat addition of 1800 kj/kg of air. Chamber is sealed only during the combustion-expansion process and open to atmosphere for rest of cycle. Assuming an air-standard working cycle with inlet at 1-atm, 300 k, working fluid cv = 0.717 kj/kg k and =1.3, calculate:

a.Mass of working fluid,

b.Cycle work,

c.Thermal efficiency,

d.Mean-effective-pressure

Answer 1

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