power adjustable bed

Several different methods of automobile ancillary power exist. The ultimate source of power for most of them is the automobile's main power source—normally an internal combustion engine of some kind—but some way of transferring power to the vehicle's ancillary systems is required. This may be through direct mechanical connection, electricity, hydraulic systems, vacuum, or compressed air.

The trend in modern vehicles is toward making all ancilliaries run on electrical power, simplifying the vehicle's systems and making them easier to control automatically.

Mechanical

Some automobile accessories are connected directly to the engine through gears or belts. Power Adjustable Bed Prices & Reviews - Nextag. These may include ancillary systems that directly service the engine; the water pump, fuel pump, oil pump, cooling fan, etc. Another class of mechanically connected ancilliaries are those that require large amounts of power; for example, an air conditioning compressor.

Also mechanically connected to the engine are components to convert this mechanical power into other forms; for example, an alternator to charge the battery, or a hydraulic pump to drive the power steering.

Electrical

Automobiles have had electrically driven systems from the beginning, since the spark-ignition engine used in most vehicles requires electricity to generate the spark.