Q.1 A 4-stroke, 4-cylinder diesel engine operating with bio-diesel fuel with an equivalent molecular formula (CiH1.900.1)...

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Q.1 A 4-stroke, 4-cylinder diesel engine operating with bio-diesel fuel with an equivalent molecular formula (CiH1.900.1) produces 300 Nm @ 2400 rpm. The displacement volume of the engine is 2 litres and the intake air flow rate is 69.6 g/s. LHV of fuel is 41 MJ/kg. Measurement of the engine exhaust gives the following volumetric concentrations: 200 ppm CO 32 mg soot/m of exhaust Assuming a brake thermal efficiency of 40%, density of exhaust as 1.15 kg/m and molar mass of exhaust as 29 kg/kmol, determine the soot and CO emissions in g/kWh Q.2 The combustion efficiency of a 4 stroke, 2.0 L gasoline engine under low load operation at 1000 rpm is 96.2%. The volumetric efficiency of the engine is 68%, and the fuel flow rate is 0.904 g/s. Assuming the loss in combustion efficiency is only because of IIC emissions, calculate the corresponding HC emissions in ppmC1 (CH, LHV line: 44 MJ/kg, molar mass of exhaust is 29 kg/kmol, density of air: 1.16 kg/m) Q.3 A4 stroke 6 cylinder, 3.6 litre SI engine produces 8 bar bmcp and 350 ppm of NOx while running at 1920 rpm. If the fuel flow rate is 3.2 g/s and the MAF is 167.4 kg/h, calculate the brake specific NOx in g/bhph. Q.1 A 4-stroke, 4-cylinder diesel engine operating with bio-diesel fuel with an equivalent molecular formula (CiH1.900.1) produces 300 Nm @ 2400 rpm. The displacement volume of the engine is 2 litres and the intake air flow rate is 69.6 g/s. LHV of fuel is 41 MJ/kg. Measurement of the engine exhaust gives the following volumetric concentrations: 200 ppm CO 32 mg soot/m of exhaust Assuming a brake thermal efficiency of 40%, density of exhaust as 1.15 kg/m and molar mass of exhaust as 29 kg/kmol, determine the soot and CO emissions in g/kWh Q.2 The combustion efficiency of a 4 stroke, 2.0 L gasoline engine under low load operation at 1000 rpm is 96.2%. The volumetric efficiency of the engine is 68%, and the fuel flow rate is 0.904 g/s. Assuming the loss in combustion efficiency is only because of IIC emissions, calculate the corresponding HC emissions in ppmC1 (CH, LHV line: 44 MJ/kg, molar mass of exhaust is 29 kg/kmol, density of air: 1.16 kg/m) Q.3 A4 stroke 6 cylinder, 3.6 litre SI engine produces 8 bar bmcp and 350 ppm of NOx while running at 1920 rpm. If the fuel flow rate is 3.2 g/s and the MAF is 167.4 kg/h, calculate the brake specific NOx in g/bhph.