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Line 3: '''Automobile accessory power''' {{Clarify me\|date=March 2009}} can be produced by several different means. However, it is always ultimately derived from the [[automobile]]'s [[engine\|internal combustion engine]]. An engine has one or more devices for converting energy it produces into a usable form, [[electrical\|electricity]] connection through the alternator, [[hydraulic]] ~~connections~~connec tions from a pump or engine system, [[Pneumatics\|compressed air]], and engine [[vacuum]]; or the engine may be directly tapped through a [[mechanical]] connection. Modern vehicles run most accessories on electrical power. Typically, only 2% of a vehicle's total power output goes towards powering accessories.<ref name=autogenerated2>[http://www.trb.org/publications/sr/sr286.pdf TRANSPORTATION RESEARCH BOARD SPECIAL REPORT 286 TIRES AND PASSENGER VEHICLE FUEL ECONOMY Fig 3-1, p.63 of pdf, p.40 of report]</ref> ==Mechanical==

Automobile accessory power: Difference between revisions