The Nissan Quest Alternator transforms the engine's mechanical rotational energy into an electrical current which powers the electrical systems and charges the battery. The Alternator is belt driven and is located at the front part of the engine. It allows charging of the battery and powering the electrical system. This device consists of a two-piece cast aluminum housing that contains a shaft-mounted rotor and a surrounding stator of windings. As the rotor spins because of the belt driven pulley, a magnetic field with rotational flux induces voltage in the stator windings. The Alternator produces alternating current which is routed through internal diodes in the rectifier assembly. The job of the rectifier assembly is to change this to the direct current required by the vehicle's electrical network. In order to avoid under or overcharging, voltage output is controlled by adjusting the field current through a regulator inside the unit or by the powertrain control module. The rotating shaft is supported by front and rear bearings and a fan encourages airflow. The Nissan Quest Alternator can ensure that the vehicle's lights, other electronic systems, and battery continue to operate. The Alternator is a key component of every Nissan Quest.
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