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Engineering and Comp Sci Homework Help
Design of 4 stroke IC engine from few parameters (bmep, B.P, piston speed)
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[QUOTE="jack action, post: 4388402, member: 240508"] Your problem in your calculations is the 10³ you are introducing. You shouldn't have it. This way your answer will be in m² instead of dm² (which is a wrong assumption by the way). You have to actually multiply your bore in mm by 0.31623 to get the right answer [which corresponds to 1000 / 100 / sqrt(1000)]. So instead of 364 mm, the proper answer would be 115 mm for a 12-cylinder and 174 mm instead of 550 mm for a 6-cylinder. By using [URL="http://hpwizard.com/engine-horsepower-calculator.html"]this calculator[/URL], you can find the answer in the proper units easily. For a 12-cylinder with BMEP = 8 bar and MPS = 12 m/s, I find a torque of 845 lb.ft @ 2500 rpm, a bore X stroke of 115 mm X 144 mm (assuming B/S = 0.8) and a total displacement of 18 L. [/QUOTE]
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Engineering and Comp Sci Homework Help
Design of 4 stroke IC engine from few parameters (bmep, B.P, piston speed)
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