A 3-liter 6-cylinders square engine (bore = stroke) with two intake valves and one exhaust valve per cylinder is designed to have an output power of 300 kW and a corresponding bmep of 18.5 bar. The intake temperature is 55°C. Assume an average flow coefficient at the intake valve of 0.35. a) Calculate the intake valve area and the diameter of intake valves for a good volumetric efficiency (Mach index Z of 0.6) b) Calculate the exhaust valve area if the exhaust gases temperature is 600°C, the average flow coefficient at the exhaust valve is 0.6. c) The exhaust valve opens when the piston is at the bottom dead center. For a lift I = 1.35 cm of the exhaust valve, calculate the flow rate through the exhaust valve. The average flow coefficient at the exhaust valve is 0.6 and the cylinder pressure and temperature are 500 kPa and 600°C. Assume exhaust system pressure is 105 kPa. Notes:
A 3-liter 6-cylinders square engine (bore = stroke) with two intake valves and one exhaust valve per cylinder is designed to have an output power of 300 kW and a corresponding bmep of 18.5 bar. The intake temperature is 55°C. Assume an average flow coefficient at the intake valve of 0.35. a) Calculate the intake valve area and the diameter of intake valves for a good volumetric efficiency (Mach index Z of 0.6) b) Calculate the exhaust valve area if the exhaust gases temperature is 600°C, the average flow coefficient at the exhaust valve is 0.6. c) The exhaust valve opens when the piston is at the bottom dead center. For a lift I = 1.35 cm of the exhaust valve, calculate the flow rate through the exhaust valve. The average flow coefficient at the exhaust valve is 0.6 and the cylinder pressure and temperature are 500 kPa and 600°C. Assume exhaust system pressure is 105 kPa. Notes:
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A 3-liter 6-cylinders square engine (bore = stroke) with two intake valves and one exhaust valve per cylinder is designed to have an output power of 300 kW and a corresponding bmep of 18.5 bar. The intake temperature is 55°C. Assume an average flow coefficient at the intake valve of 0.35. a) Calculate the intake valve area and the diameter of intake valves for a good volumetric efficiency (Mach index Z of 0.6) b) Calculate the exhaust valve area if the exhaust gases temperature is 600°C, the average flow coefficient at the exhaust valve is 0.6. c) The exhaust valve opens when the piston is at the bottom dead center. For a lift I = 1.35 cm of the exhaust valve, calculate the flow rate through the exhaust valve. The average flow coefficient at the exhaust valve is 0.6 and the cylinder pressure and temperature are 500 kPa and 600°C. Assume exhaust system pressure is 105 kPa. Notes: The specific heat ratio and gas constant for the gases at the inlet and exhaust valves are respectively 1 = 1.4 and R = 287J/kg.K
Transcribed Image Text:A 3-liter 6-cylinders square engine (bore = stroke) with two intake valves and one exhaust valve per
cylinder is designed to have an output power of 300 kW and a corresponding bmep of 18.5 bar. The
intake temperature is 55°C. Assume an average flow coefficient at the intake valve of 0.35.
a) Calculate the intake valve area and the diameter of intake valves for a good volumetric efficiency
(Mach index Z of 0.6)
b) Calculate the exhaust valve area if the exhaust gases temperature is 600°C; the average flow
coefficient at the exhaust valve is 0.6.
exhaust valve, calculate the flow rate through the exhaust valve. The average flow coefficient at the
exhaust valve is 0.6 and the cylinder pressure and temperature are 500 kPa and 600°C. Assume exhaust
system pressure is 105 kPa.
Notes: The specific heat ratio and gas constant for the gases at the inlet and exhaust valves are
respectively 7= 1.4 and R= 287 J/kg.K
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