The thickness of the cylinder wall t may also be

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Unformatted text preview: The thickness of the cylinder wall (t) may also be obtained from the following empirical relation, i.e. t = 0.045 D + 1.6 mm The other empirical relations are as follows : Thickness of the dry liner = 0.03 D to 0.035 D Internal Combustion Engine Parts n 1129 Thickness of the water jacket wall = 0.032 D + 1.6 mm or t / 3 m for bigger cylinders and 3t /4 for smaller cylinders Water space between the outer cylinder wall and inner jacket wall = 10 mm for a 75 mm cylinder to 75 mm for a 750 mm cylinder or 0.08 D + 6.5 mm 2. Bore and length of the cylinder. The bore (i.e. inner diameter) and length of the cylinder may be determined as discussed below : Let pm = Indicated mean effective pressure in N/mm2, D = Cylinder bore in mm, A = Cross-sectional area of the cylinder in mm2, = π D2/4 l = Length of stroke in metres, N = Speed of the engine in r.p.m., and n = Number of working strokes per min = N, for two stroke engine = N/2, for four stroke engine. We know that the power produced inside the engine cylinder, i.e....
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This note was uploaded on 09/30/2012 for the course MECHANICAL 403 taught by Professor A.thirumoorthy during the Spring '11 term at Anna University Chennai - Regional Office, Coimbatore.

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