Q2. 3.5 SA1 2.5 SA2 SA3 1.5 1 0.5 SA3 i SA2 SA1 -40 -20 20 40 Crank Angle (deg) -60 60 80 100 (a) Three different pressure traces resulting from three different spark advances SA1, SA2 and SA3 for a test Sl engine are shown in the graph above. In the graph, SA1, SA2 and SA3 correspond to 32.5°, 22.5° and 12.5° in crankshaft angle before the TDC. Explain the graphs and mention which spark advance is close to optimal spark advance and why. (b) Mention the parameters that are being used to determine optimal spark advance. Pressure [MPa]

Q2. 3.5 SA1 2.5 SA2 SA3 1.5 1 0.5 SA3 i SA2 SA1 -40 -20 20 40 Crank Angle (deg) -60 60 80 100 (a) Three different pressure traces resulting from three different spark advances SA1, SA2 and SA3 for a test Sl engine are shown in the graph above. In the graph, SA1, SA2 and SA3 correspond to 32.5°, 22.5° and 12.5° in crankshaft angle before the TDC. Explain the graphs and mention which spark advance is close to optimal spark advance and why. (b) Mention the parameters that are being used to determine optimal spark advance. Pressure [MPa]

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter1: Introduction To Statics

Section: Chapter Questions

Problem 1.12P: A differential equation encountered in the vibration of beams is d4ydx4=2D where x = distance...

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