The Volkswagen Atlas Alternator transforms engine movement into a continuous flow of electricity that prevents all onboard systems of the vehicle from running out of charge. The lightweight cast aluminum halves of this compact generator combine fixed stator windings with a shaft-mounted rotor and a front pulley and cooling fan, which allow the belt drive to rotate and cool the unit effectively. In the charging circuit its moving magnetic field causes an alternating current that a rectifier internally converts into battery-friendly direct current, providing almost fourteen volts when the driver is in traffic and almost eighteen when on a mountain pass. Wear on the brush is reduced by an intelligent solid-state voltage regulator which continuously varies field current to prolong service far beyond the 100,000-mile service life that many users claim. Since the mounting points and airflow requirements of early and later Atlas electric vehicles are identical, a single Alternator design will serve a variety of model years, including the 2017 introduction vehicles all the way up to the 2024 refresh trim levels, providing owners with a single solution that is easier to inventory and install. In later SUVs the unit also communicates with the Powertrain Control Module, which allows the engine computer to select the time to charge the battery, decreasing the rate of fuel consumption and increasing overall efficiency. That coordination also enhances safety as the Digital Cockpit as well as the headlights, radar sensors and brake assist pumps all get clean current even when there is heavy part usage at night or in a storm. The other unique attribute is the built-in fan behind the pulley, which does not require external cooling hoses and shrouds but keeps the perfect temperature; hence performance remains the same during hot summer in the city or the cold mountain environment. The Alternator is a silent but essential contributor to the Atlas family because of its reliability, compatibility across generations and intelligent energy management, and further ensures that Volkswagen has developed a reputation for creating components that stand the test of time.
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