What is the metric brake horse power developed per cylinder by an 83% efficient, six cylinder, two-stroke/cycle diesel engine with a cylinder constant of 0.998 and a mean effective pressure of 15 kg/cm² at 100 RPM?
• Use the indicated power formula for a 2-stroke/cycle diesel engine with a given cylinder constant and mean effective pressure • Understand how mechanical efficiency (83%) converts indicated power to brake power • Remember that the problem asks for power per cylinder, not for all six cylinders
• First, think about which standard power formula uses mean effective pressure, RPM, and a constant for units and stroke type • Consider whether a 2-stroke engine takes one power stroke per revolution or every other revolution, and how that affects the formula • After finding the indicated metric horsepower per cylinder, think about how to correctly apply the 83% efficiency to reach brake horsepower
• Be sure you are using a formula appropriate for 2-stroke engines and metric units (kg/cm², RPM) • Confirm that you divide or otherwise adjust correctly so the final result is per cylinder, not for all six together • After calculating, check that applying 83% efficiency (0.83 factor) makes sense in terms of reducing the indicated power to brake power
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