A six cylinder, four-stroke CI engine is tested against a water brake dynamometer for which B.P = WN/17x10' in kW, where W is the brake load in newton and N is the speed of the engine in the r.p.m. The air consumption was measured by means of a sharp edged orifice. During the test following observersations were taken : • Bore • Stroke • Speed • Brake load • Barometer reading = 10 cm = 14 cm = 2500 rpm = 480 N = 76 cm Hg Orifice diameter = 3.3 cm = 0.62 Co-efficient of discharge of orifice • Pressure drop across orifice = 14 cm of Hg = 25°C Room temperature Fuel Consumption %3D = 0.32 kg/min %3D

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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.