4. In a single-acting, two-stróké, opposed atio of the masses of the top piston and its connected moving arts to the bottom piston and its moving parts, is 7-5 to 6, and he strokes of the pistons are in inverse ratio to their masses. The combined stroke of the top and bottom pistons is 2430 mm. The engine has six cylinders of 625 mm diameter and the indicated nean effective pressure is 6-5 bar when running at 1-75 rev/s. Assuming a mechanical efficiency of 90%, find the strokes of the op and bottom pistons, the indicated power and the brake power.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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4. In a single-acting, two-stroke, opposed-piston engine, the
ratio of the masses of the top piston and its connected moving
parts to the bottom piston and its moving parts, is 7-5 to 6, and
the strokes of the pistons are in inverse ratio to their masses.
The combined stroke of the top and bottom pistons is 2430 mm.
The engine has six cylinders of 625 mm diameter and the indicated
mean effective pressure is 6-5 bar when running at 1-75 rev/s.
Assuming a mechanical efficiency of 90%, find the strokes of the
top and bottom pistons, the indicated power and the brake
power,
Transcribed Image Text:4. In a single-acting, two-stroke, opposed-piston engine, the ratio of the masses of the top piston and its connected moving parts to the bottom piston and its moving parts, is 7-5 to 6, and the strokes of the pistons are in inverse ratio to their masses. The combined stroke of the top and bottom pistons is 2430 mm. The engine has six cylinders of 625 mm diameter and the indicated mean effective pressure is 6-5 bar when running at 1-75 rev/s. Assuming a mechanical efficiency of 90%, find the strokes of the top and bottom pistons, the indicated power and the brake power,
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