Engineering

Engineering, 26.07.2019 18:10, krystenlitten

Adiesel engine with a compression ratio of 16 has a cutoff ratio of 1.5. the state before polytropic compression (exponent 1.3) is 1700 cm3 , 96 kpa and 22°c and there is isentropic expansion. (a) sketch the p-v diagram for this cycle. (b) calculate the heat transfer in and heat transfer out. (c) determine the thermal efficiency. (d) calculate the mean effective pressure

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Physics, 08.07.2019 17:30, carlosleblanc26

The displacement volume of an internal combustion engine is 2.19 liters. the processes within each cylinder of the engine are modeled as an air-standard diesel cycle with a cutoff ratio of 2.5. the state of the air at the beginning of compression is fixed by p1 = 1.6 bar, t1 = 325 k and v1 = 2.36 liters. if the cycle is executed 2100 times per min, determine: a) the compression ratio, b) the net work per cycle, in kj, c) the maximum temperature, in k, d) the power developed by the engine, in kw, e) and the thermal efficiency.

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Engineering, 07.08.2019 19:10, shay03littletop5kx2p

Consider a 2-stroke twin cylinder ci engine that operates on an ideal diesel cycle. it uses light diesel fuel with a combustion efficiency of 85%. the bore is 7.6cm and the stroke is 8cm. the geometric compression ratio is 16, the trapped compression ratio is 12, and the compression ratio at tpo is 14. mechanical efficiency is 87% and the trapping efficiency is 84%. at 3500 rpm, the conditions in the cylinder at start of compression are 125 kpa and 38°c. if the engine has a cutoff ratio of 3.5, calculate: (a) net work (b) actual air fuel ratio (c) indicated thermal efficiency (d) brake power (e) bmep and bsfc

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Engineering, 11.10.2019 05:20, madiforkner

Consider an engine that has a working fluid of air at 27c° and 100kpa at the beginning of the compression process and at 1700 k at the end of the heat addition process. assuming the engine to operate on the ideal diesel cycle with a compression ratio of 19 and using constant specific heats evaluated at the average temperature, determine (a) the cutoff ratio, (b) the heat rejection per unit mass, and, (c) the thermal efficiency

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Physics, 28.10.2019 23:31, lel11

Adiesel engine accomplishes ignition without a spark plug by an adiabatic compression of air to a temperature above the ignition temperature of the diesel fuel, which is injected into the cylinderat the peak of the compression. suppose air is taken into the cylinder at 280 k and volume v1and is compressed adiabatically to 560 0cand volume v2. assuming that the air behaves as a n ideal gas whose ratio of cpto cvis 1.4, calculate the compression ratio v1/v2of the engine.

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Adiesel engine with a compression ratio of 16 has a cutoff ratio of 1.5. the state before polytropic...

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