Hi everybody,

My name is George and I havent being using my Thermodynamics for 25 years!!! (AA for old engineers)

Anyway, my son was given the following problem. I wanna help him, but I have forgotten almost everything...can you help me?

thanks you in advance

A four-stroke 2400ccm petrol engine has 6 cylinders. At the top-dead position of the piston, the available volume in a cylinder is 50ccm. Analyse the engine using the appropriate ideal cycle.
Specific heat values of the air or air-fuel mixture: CV= 0.72 kJ/(kgK); CP= 1.01 kJ/(kgK)
Air properties at the intake: 20% of oxygen by volume, temperature 27°C and density 1.225 kg/m3.
Model fuel: pure octane with density of 880kg/m3 and calorific value of 48 MJ/kg
1.)
Calculate the volume and mass of air in a cylinder at the beginning of the cycle .
2.)
Calculate the compression ratio.
3.)
find the temperature of the air-fuel mix after the compression.
4.)
Determine the mass of fuel required to combust all the oxygen in the cylinder.
5.)
Calculate the heat released during the combustion of the fuel.
6.)
Calculate the temperature of the combustion products at the end of the combustion phase.
7.)
Calculate the temperature of the exhaust gas prior to it being purged from the engine, and determine the heat dumped to the environment.
8.)
Calculate the efficiency of this ideal cycle and the net work output per cycle and per shaft revolution.
9.)
Calculate the power output, based on the ideal cycle, of the engine running at 3000rpm.
10.)
Calculate the petrol consumption, in litres, for 1 hour's driving at that power output.