Chainsaw essays

Chainsaw essays The basic 16-inch chainsaw pictured below, has some of the following components, - And an ignition system started by a magneto connected to a spark plug There are many working parts to the chainsaw. The first a most important is the aircooled two-stroke engine. An engine works as follows, the first place to start is when the spark plug fires. Petrol and air that have been compressed in the cylinders of the engine ignite when the spark plug fires. This reaction drives the piston downward. As the piston approaches the bottom of its stroke, the exhaust port is uncovered. As the piston finally bottoms out, the intake port is uncovered. The piston's movement has pressurized the mixture in the crankcase, so it rushes into the cylinder, displacing the remaining exhaust gases and filling the cylinder with a fresh charge of fuel, once the piston has finished its cycle the processes starts again. The centrifugal clutch is situated between the engine and the chain. The clutch's purpose is to disengage so that the chain does not move when the engine is not running. When the engine speeds up, the clutch engages so that the chain can cut. The middle and weights spin as one. If they are spinning slowly enough, the weights are held against the middle by the spring. The magneto creates the electrical charge needed to fire the spark plug, and the spark plug creates the spark inside the combustion chamber to ignite the petrol. The job of the magneto is to create a surge. In simple a magneto basically is an electrical generator that has been tuned to create a short high-voltage pulse rather than continuous current. ...