|Chevy 350 Engine Physics|
Physics in Chevy 350 engines concerns itself with the way in which a particular process proceeds. When the crankshaft revolves counter-clockwise, the crankshaft pushes the piston upward in the cylinder. At the stage known as compression, the piston is pushed half way upwards. During this phase the gas-air mixture above the piston is compressed by the upward movement of the piston. Chevy 350 engine operates on the so-called spark-ignition and has an isentropic compression. An unvarying volume combustion explosion follows this compression.
Small-block Chevy engine has a bore (diameter of the cylinder) of 4". The stroke of the engine is 3.5". The volume of the cylindrical volume is around 44 cubic inches. Since the engine has eight cylinders, each of that volume, the total displacement is 44 * 8 or around 350 cubic inches. Most of us are also acquainted with the engine as Chevy 350 V-8.
The position where the piston remains at the very uppermost point is known as the Top Dead Center (TDC). The room above the piston at TDC has been selectively designed to create a volume of about 6.3 cubic inches. At the time when piston begins its upward progress at Bottom Dead Center, there is a gas-air mixture volume of 50.3 cubic inches (44+6.3) above it. At the time of reaching TDC, all the gas-air mixture has been compressed into the remaining 6.3 cubic inches. This ratio, 50.3 / 6.3, is the compression ratio of the Chevy 350 engine.
Chevy 350 engine rely on maintaining the explosion pressure for as long as possible. This pressure is maintained within the cylinder right through the entire power stroke for upright performance. This can also result in the engine losing much of its power once the piston rings start to wear out. Even the wearing out of the valve seats or its distortion can lead to leaking pressure. The design of the engine which relies on keeping hold of the pressure before actually using it makes the worn rings and valves particularly important.
Generally, the conditions existing inside the cylinder allow for the front velocity to be around 60 mph. The crankshaft rotates a tiny distance past the TDC when the maximum amount of gas-air mixture burns. When speed of the Chevy 350 engine increases to 1500 rpm, then consistency is commonly around 10? after TDC.
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