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A 3-Litre, SI engine operates on an air standard four-stroke Miller cycle with supercharging at a speed of 2500 RPM. The intake valves close earlier, resulting cycle 6'-7-8-7-2-3-4-5-6 as shown in the figure below. After an intercooler, Air-

A 3-Litre, SI engine operates on an air standard four-stroke Miller cycle with supercharging at a speed of 2500 RPM. The intake valves close earlier, resulting cycle 6'-7-8-7-2-3-4-5-6 as shown in the figure below. After an intercooler, Air-

Elements Of Electromagnetics
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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Thermodynamics of engines

Answer Questions i , ii, iii

A 3-Litre, SI engine operates on an air standard four-stroke Miller cycle with supercharging at a speed of 2500RPM. The intake valves close earlier, resulting cycle 6'-7-8-7-2-3-4-5-6 as shown in the figure below. After an intercooler, Air- fuel enters the cylinder at 55°C and 165 kPa, and the heat input by combustion is qin=2500 kJ/kg during the combustion. Compression ratio r. expansion ratio re pressure is at Po =100 kPa. Q2 10, and 12. The fuel has a heat value of 41,000 kJ/kg. The exhaust %3D %D Determine Temperature [K], pressure [kPa], and specific volume [m³/kg] at each state of the cycle. (i) Neglecting the processes 6'-7 and 5-6, determine the indicated thermal efficiency. [%] Clearance volume of the engine. (L) Indicated work of the engine per cycle. [kJ] (ii) (iii) (iv)
Transcribed Image Text:A 3-Litre, SI engine operates on an air standard four-stroke Miller cycle with supercharging at a speed of 2500RPM. The intake valves close earlier, resulting cycle 6'-7-8-7-2-3-4-5-6 as shown in the figure below. After an intercooler, Air- fuel enters the cylinder at 55°C and 165 kPa, and the heat input by combustion is qin=2500 kJ/kg during the combustion. Compression ratio r. expansion ratio re pressure is at Po =100 kPa. Q2 10, and 12. The fuel has a heat value of 41,000 kJ/kg. The exhaust %3D %D Determine Temperature [K], pressure [kPa], and specific volume [m³/kg] at each state of the cycle. (i) Neglecting the processes 6'-7 and 5-6, determine the indicated thermal efficiency. [%] Clearance volume of the engine. (L) Indicated work of the engine per cycle. [kJ] (ii) (iii) (iv)
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