A2. A four-cylinder, 1.6 litre, spark ignition automotive engine operates at wide openthrottle on a four-stroke air-standard Otto cycle. The engine has a compressionratio of 8.3 and a stroke-to-bore ratio of 1.093. At the start of the compressionstroke, conditions inside the cylinder are 1 bar and 333 K.Determine the following quantities:a) Bore, stroke and clearance volume per cylinder.b) Temperature and pressure at the end of the compression stroke.c) Peak cylinder temperature and pressure, if the heat addition is 900 kJ/kg.d) Net work output per cylinder, mean effective pressure and engine poweroutput, assuming an engine speed of 1800 rev/min.e) If this engine is converted to work on a diesel air-standard cycle with thesame compression ratio and initial conditions, comment on the thermalefficiency of the two cycles with the help of a P-V diagram.For air use the following values of specific heat at costant pressure and specificgas constant: Cp = 1005 J/kgK; R = 287 J/kgK.

Answered: Image /qna-images/answer/735756ba-0ea6-43af-887e-afa691a8e1b6.jpg

Answered: A2. A four-cylinder, 1.6 litre, spark…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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A power producing equipment with a 4 cylinder, 4- stroke and operating in an air standard diesel cycle has a bore of 10cm and stroke of 12cm. Determine the engine displacement in each cycle.
The stroke volume of a 4-stroke, 4-cylinder, water-cooled, electronically fired engine operating according to the Otto cycle is 1796 cm³, compression ratio 10, cylinder diameter 80,6 mm and connecting rod length 137 mm. This engine operating at 3000 rpm with 15 KMA ignition advance;a) Combustion chamber volume (dead volume)b) Average piston speedc) Find the position of the piston in relation to the upper dead point at the time of ignition.
A 6.4-liter, V8 Spark ignition (8 cylinder) 4-stroke engine operates at an engine speed of 3200 RPM. The compression ratio is CR = 10.5:1. At this speed volumetric efficiency is 93%, combustion efficiency is 98%, indicated thermal efficiency is 47%, and mechanical efficiency is 86%. Stroke and bore will be related by S = 0.90 B. Combustion starts at 18 degrees bTDC and last for 0.25 seconds. Calculate? a.Overall efficiencyb. Piston displacementc. Cylinder bore and stroked. average piston speed and max piston speede.distance piston has traveled from TDC at the end of combustion, f. volume at the end of combustion g. position of crank at the end of combustion
Thermodynamics (Brayton Cycle) Round up the answer up to 5 decimal places. A 120 MW gas turbine power plant running on Ideal Brayton cycle has the followinginitial conditions; air at 22°C & 95 kPa. The compression ratio is 7 and the temperature atthe turbine entrance is 910°C. Determine the following: a. Pressure & temperature at each stateb. T-S diagramc. Heat Added, per unit massd. Thermal Efficiencye. Mass flow rate, kg/min
An engine is working on Otto cycle with the following specifications: Pressure and temperature of the intake air = 1 bar and 27oC; Compression ratio = 5;Maximum pressure allowable in the cycle = 32 bar;Index of compression and expansion = 1.25, Cylinder diameter =12 cm,Stroke length = 20 cm,Number of cycles per minute = 550rpm. Determine the following:(i) Pressure, specific volume and temperatures at all the points ofthe cycle; (ii) Mean effective pressure of the cycle;
An engine is working on Otto cycle with the following specifications: Pressure and temperature of the intake air = 1 bar and 27oC Index of compression and expansion = 1.25 Cylinder diameter =12 cm Stroke length = 20 cm Number of cycles per minute = 250 Compression ratio = 6.2 Maximum pressure allowable in the cycle = 48 bar Perform the following: 1) Pressure, specific volume and temperatures at all the points of the cycle? 2) Mean effective pressure of the cycle? 3) Power developed by the engine in kW
An engine is working on Otto cycle with the following specifications: Pressure and temperature of the intake air = 1 bar and 27oC; Compression ratio = 5;Maximum pressure allowable in the cycle = 32 bar;Index of compression and expansion = 1.25, Cylinder diameter =12 cm,Stroke length = 20 cm,Number of cycles per minute = 550rpm. Determine the following:(i) Power developed by the engine in kW.
2. A Spark-Ignition Engine has 4 cylinders in-line, a compression ratio of 8.7 and a displacement of 2.6Liters and with S = 1.05B. Fuel used is C 8 H 18 with an equivalence ratio of 1.05 with combustionefficiency of 100%. The heating value of the fuel is 44,300 kJ/kg. While operating at 3200 rpm,mechanical efficiency is 86 % and indicated engine efficiency is 96%. Conditions at the start ofcompression stroke are 100 kPaa and 60 o C. It can be assumed that there is a 3 % exhaust residual leftfrom the previous cycle.Determine: a) P and T at cycle state points, b) mass of air per cylinder, c) mass of fuel per cylinder, d)brake thermal efficiency, e) torque produced, f) fmep, g) isfc, h) volumetric efficiency, i) Specific Power
Thermodynamics (Brayton Cycle) Round up the answer up to 5 decimal places. A 120 MW gas turbine power plant running on Ideal Brayton cycle has the following initial conditions; air at 22°C & 95 kPa. The compression ratio is 7 and the temperature at the turbine entrance is 910°C. Determine the following: d. Thermal Efficiency e. Mass flow rate, kg/min
30. A power producing equipment with a 4 cylinder, 4- stroke and operating in an air standard diesel cycle has a bore of 10cm and stroke of 12cm. Determine the engine displacement in each cycle. a. 7.5396Li b. 7.5399Li c. 7.5397Li d. 7.5398Li
Completely solve and box the final answers. Write legibly 2. There are required 2.5 MW from a gas turbine unit for pumping of oil. Air enters the compressor at 1.02 bar and 9.2°C. The discharge pressure is 1020kpa. The turbine section receives the hot gases at 820°C. For a Brayton cycle, determine the required air flow in kg/minute.
A Three stage

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