Project - Analysis of a practical automotive wiring circuit
1.major elements in tha automotive wiring diagram:
1.battery 2.ignition switch 3.starter 4.ignition coil 5.distributor 6.spark plug 7.breaker 8.generator 9.current and voltage regulator 10.ammeter 11.fuse 12.light switch 13.head light 14.horn and horn button 15.parking lamp 16.tail light 17.break light switch 18.gas tank 19.fulegage
2.three elements working and purpose
1.battery
Purpose :-
The first purpose of an auto battery is to provide power for starting your vehicle. It also acts as a surge protector for the car's computer and provides power for short-term use of things like lights, stereo, GPS or wipers when the engine is off. The car battery is part of the starting system.
Working :-
A car battery uses lead-acid technology to turn chemical energy into electricity. It accomplishes this through the usage of cells, which contain and store the energy until needed. Most standard car batteries contain six cells that are situated in a row inside the plastic casing.
2.ignition switch
Purpose :-
Tha ignition switch for electrical systems in the vehicle so the vehicle can start or allow an automatic transmission to be shifted out of Park.
Working :-
(battery) current flows from the battery through the ignition switch to the coil primary windings. Primary current is turned on and off by the action of the armature as it revolves past the pickup coil or sensor.
Spark plug:-
Purpose :-
spark plugs are the spark of electricity that ignites the combustion needed to start your vehicle. Spark plugs emit a bolt of electricity across a small gap igniting the fuel and air mixture that puts the pistons in motion and gets your vehicle up and running.
Working:-
the spark plug is connected to the high voltage generated by an ignition coil
difference develops between the center electrode and ground electrode on the spark plug.
3.find the fuse rating
Totel load 10amp
Battery votage 12v
Power = volt/current
= 12v × 10amp
= 120 watt
Fuse ratting calculation
Power 120watt
Fuse rating= power/voltage × 1.25
= 120W/12v
= 10ampere
= 10×1.25
= 12.5 amperee
Used by 12.5 amp rating fuse
4. Battery capacity ah = watt/volt
= 500w/ 12v
= 4l.6 ah I recommend
5.(1).head lights and (2).tail lights connected in parallel
Why they are connected in parallel
The head lights of a car are always connected in parallel. If the lights are connected in series, then when one of the lights do not function, the other one also do not work. So the lights of a car are connected in parallel for safety reasons. In series circuits, there is only one path for to flow.
6.(1).ammeter connected in series
Why they are connected in series
A Ammeter is used to measure the current flowing through a component/circuit. Since, current remains same in series connection and also the resistance of an ammeter is very small due to which it doesn't affect the current to be measured. So, an ammeter is connected in series to measure current.
(2). Starrer connected in series
Starters are used to protect DC motors from damage that can be caused by very high current and torque during startup. They do this by providing external resistance to the motor, which is connected in series to the motor's armature winding and restricts the current to an acceptable level.