Part 1 Automotive Electrical Wiring and Troubleshooting: Introduction w / Kent Bergsma
42-volt electrical system
In automobiles , a volt electrical system was an electrical power standard proposed in the late s. It was intended to allow more powerful electrically-driven accessories, and lighter automobile wiring harnesses. Electric motors were proposed to be used for power steering or other systems, providing more compact installations and eliminating the weight of drive belts or large wires for high-current loads. The higher voltage was selected to provide greater power capacity for wiring and devices on one hand, and to stay under the 50 volt limit used as a guideline for electric shock hazard. The European auto manufacturer Daimler-Benz proposed a 42V brand name for the conversion. The SAE discussed an increased automobile standard voltage as early as
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The battery provides juice to the starter. Then, the alternator gives that battery the energy it needs to power your car. Our expert technicians can perform an electrical system check to ensure everything is working properly. It pinpoints any problems that may occur with your electrical system. This includes the current to the ignition and fuel systems, which are responsible for creating the combustion necessary for your engine to function.
Vehicle electrical systems use up to the mids were relatively simple, containing just a few circuits for lighting, wiper and heater motors, and a points-type ignition system. Battery circuit. For the automobile technician to understand the operation of the vehicle electrical system it is quite normal to divide the system into a number of smaller sub-systems, so that in case of an electrical fault diagnosis can then be confined to the particular affected sub-system. The main parts, systems and circuits of the vehicle electrical systems are as follows : Battery. This unit supplies the electrical energy for vehicle electrical systems, during non-operation of the engine. Also it provides energy for cranking the engine during starting. The battery acts as a storage unit for the electrical energy Fig.
Trying to locate the cause of an electrical problem can be quite difficult if you do not have a good understanding of wiring systems and diagrams. In this chapter, you will learn how wiring harnesses are made, how to read the wiring diagram, how to interpret the symbols used, and how terminals are used. This will reduce the amount of confusion you may experience when repairing an electrical circuit. It is also important to understand how to determine the correct type and size of wire to carry the anticipated amount of current. It is possible to cause an electrical problem by simply using the wrong gauge size of wire. A technician must understand the three factors that cause resistance in a wire—length, diameter, and temperature—to perform repairs correctly. Automotive Wiring Primary wiring is the term used for conductors that carry low voltage.