Simply put, an automobile engineis a motor that converts thermal energy to mechanical work in order topropel an automobile. The engines commonly used in automobiles ...
An automobile engine consumes fuel at a rate of 28 L/h anddelivers 60 kW of power to the wheels. If the fuel has a heatingvalue of 44,000 kJ/kg and a density of 0.8 g/cm3,determine the efficiency of this engine.
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of the engine. This burning occurs inside cylinders, which contain pistons. The pistons are attached, via a connecting rod, to a crankshaft. Gasoline, the most common automobile fuel, is pulled into the cylinder by the vacuum created as the piston moves down through the cylinder. The gasoline is then compressed up into the cylinder by the upward movement of the piston. A spark is introduced through a spark plug placed at the end of the cylinder. The spark causes the gasoline to explode, and the explosion drives the piston down again into the cylinder. This movement, called the power stroke, turns the crankshaft. A final movement of the piston upward again forces the exhaust gases, the byproducts of the fuel's combustion, from the cylinder. These four movementsintake, compression, power, exhaustare called strokes. The four-stroke engine is the most common type of automobile engine.
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Engine Oil System:Oil is one of the necessities of an automobile engine. Oil is distributed under strong pressure to all other moving parts of an engine with the help of an oil pump. This oil pump is placed at the bottom of an engine in the oil pan and is joined by a gear to either the crankshaft or the camshaft. Near the oil pump, there is an oil pressure sensor, which sends information about the status of oil to a warning light or meter gauge.
The different parts of engine oil systems include: