Design a plain carbon steel Centre crankshaft for a single acting four stroke single cylinder engine for the following data: Bore = 400 mm; Stroke = 600 mm; Engine speed = 200 r.p.m.; Mean effective pressure = 0.5 N/mm²; Maximum combustion pressure = 2.5 N/mm²; Weight of flywheel used as a pulley = 50 kN; Total belt pull = 6.5 kN. When the crank has turned through 35° from the top dead centre, the pressure on the piston is IN/mm² and the torque on the crank is maximum. The ratio of the connecting rod length to the crank radius is 5. Assume any other data required for the design.
Design a plain carbon steel Centre crankshaft for a single acting four stroke single cylinder engine for the following data: Bore = 400 mm; Stroke = 600 mm; Engine speed = 200 r.p.m.; Mean effective pressure = 0.5 N/mm²; Maximum combustion pressure = 2.5 N/mm²; Weight of flywheel used as a pulley = 50 kN; Total belt pull = 6.5 kN. When the crank has turned through 35° from the top dead centre, the pressure on the piston is IN/mm² and the torque on the crank is maximum. The ratio of the connecting rod length to the crank radius is 5. Assume any other data required for the design.
International Edition---engineering Mechanics: Statics, 4th Edition
4th Edition
ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
Publisher:Andrew Pytel And Jaan Kiusalaas
Chapter7: Dry Friction
Section: Chapter Questions
Problem 7.70P: Solve Sample Problem 7.16 if the contact pressure under the polisher varies parabolically from p0 at...
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Transcribed Image Text:Example.
Design a plain carbon steel Centre crankshaft for a single acting
four stroke single cylinder engine for the following data:
Bore=400 mm; Stroke = 600 mm; Engine speed = 200 r.p.m.; Mean effective pressure = 0.5
N/mm²; Maximum combustion pressure = 2.5 N/mm²; Weight of flywheel used as a pulley = 50 kN;
Total belt pull = 6.5 kN.
When the crank has turned through 35° from the top dead centre, the pressure on the piston is
IN/mm² and the torque on the crank is maximum. The ratio of the connecting rod length to the crank
radius is 5. Assume any other data required for the design.
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Step 1: Write the given data.
VIEWStep 2: Calculate the pressure force on combustion.
VIEWStep 3: Calculate the horizontal and vertical reactions.
VIEWStep 4: Design the crank-pin.
VIEWStep 5: Design of shaft under the flywheel.
VIEWStep 6: Design of crankshaft When crank is at angle of maximum twisting moment.
VIEWStep 7: Design of crankpin-
VIEWStep 8: Design shaft under the flywheel-
VIEWStep 9: Calculate the direct compressive stress and twisting moment on arm.
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