Give an explanation of the following starters:
Inertia: The Inertia Starter incorporates the following advantages: Minimum weight in proportion to the cranking torque capacity of the starter. High initial cranking speed thereby assuring delivery of fuel to the cylinders and permitting starting with a greater degree of spark advance. Flywheel acceleration independent of engine size, frictional torque and weather conditions, thereby assuring minimum current draw when electrically operated. Torque overload release, consisting of a multiple disc clutch under adjustable spring pressure, thereby preventing damage to the engine or starter in case of overload or engine back fire.
Pre-engage: Pre engaged starters prevent an awful lot of wear on the ring gear and Bendix gear. They were a big jump forwards in reliability. Non preengaged starters work by throwing a spinning cog at the ring gear on the flywheel to turn the engine. It will only disengage when the engine reaches sufficient speed to throw the cog out again, or the igntion key is turned back from 'start'. A lot of wear as you can imagine. Pre engaged have the cog already in place on the ring gear before the starter motor turns. Once the ignition key is turned back to 'Ign' it disengages and waits until the ignition is turned off before re engaging with the ring gear.
Reduction gear: The operator closed the key-operated starting switch.A small electric current flowed through the starter relay coil, closing the contacts and sending a large current to the starter motor assembly.One of the pole shoes, hinged at the front, linked to the starter drive, and spring-loaded away from its normal operating position, swung into position. This moved a pinion gear to engage the flywheel ring gear, and simultaneously closed a pair of heavy-duty contacts supplying current to the starter motor winding.The starter motor cranked the engine until it started. An overrunning clutch in the pinion gear uncoupled the gear from the ring gear.The operator released the key-operated starting switch, cutting power to the starter motor assembly.A spring retracted the pole shoe, and with it, the pinion gear.
(info above from: http://perrinshovel.blogspot.com/)
Give an explanation of the operation of the following charging devices:
Generator: Electrical generators by definition are devices that convert mechanical energy into electric energy. The mechanical energy in turn is produced from chemical or nuclear energy in various types of fuel, or obtained from renewable sources such as wind or falling water. Steam turbines, internal-combustion engines, gas combustion turbines, electric motors, water and wind turbines are the common methods to supply the mechanical energy for such devices. Generators are made in a wide range of sizes, from very small machines with a few watts of output power to very large power plant devices providing gigawatts of power.
Info from: http://www.generatorguide.net/howgeneratorworks.html
Alternator: The alternator works with the battery to generate power for the electrical components of a vehicle, like the interior and exterior lights, and the instrument panel. An alternator gets its name from the term alternating current (AC).
Alternators are typically found near the front of the engine and are driven by the crankshaft, which converts the pistons' up-and-down movement into circular movement. Some early model vehicles used a separate drive belt from the crankshaft pulley to the alternator pulley, but most cars today have a serpentine belt, or one belt that drives all components that rely on crankshaft power. Alternators produce AC power through electromagnetism formed through the stator and rotor relationship that we'll touch on later in the article. The electricity is channelled into the battery, providing voltage to run the various electrical systems.
Good work and information you have presented.
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