Project - Analysis of a practical automotive wiring circuit

1)BATTERY,VOLTAGE CURRENT REGULATOR,GENERATOR,STARTER MOTOR,STARTER SWITCH,IGNITION SWITCH,ALL LAMPS AND RESPECTIVE SWITCHES,HORN AND ITS SWITCH,FUEL GAUGE,AMMETER ,IG COIL ,DISTRIBUTOR, BREAKER AND SPARK PLUG.

2)IG COIL: IT CONVERTS 12V TO UPTO45000V IN ORDER TO GENERATE SPARK IN SPARK PLUG. ,SPARK PLUG : SPARK PLUG GENERATES SPARK IN ITS AIR GAP B/W ELECTRODE AND GROUND TIP IN ORDER CREATE IGNITION OF COMPRESSED AIR FUEL MIXTURE INSIDE COMBUSTION CHAMBER.,GENERATOR : IT GENERATES ELECTRICITY FOR THE ELECTRICAL LOAD REQUIREMENTS OF AN AUTOMOBILE .

3)FUSE REQUIRED FOR 10A LOAD =12A (MARKET AVAILABLE) DESIGNED FOR 125% OF ACTUAL LOAD.

4)GIVEN: LOAD=500W,V=12V SO I=42A(APPROX). SOLUTION : WE ASSUME 42A DRAWN FOR 2.5HOURS SO THE CAPACITY OF BATTERY REQUIRED =105Ah so WE APPROX TO 100Ah(MARKET AVAILABLE).

5)ALL THE LOADS WHICH ARE CONNECTED TO BATTERY ALL IN ARE PARALLEL CONNECTION.THE WORKING VOLTAGE OF ALL ELECTRICAL LOADS ARE RATED TO 12V SO THEY ARE PARALLEL TO BATTERY NOMINAL OF 12V AND ONE ELECTRICAL LOAD SHOULD NOT AFFECT OTHER SO ALL LOADS IN PARALLEL LINES FOR INDEPENDENT OPERATION.

6)ALL ELECTRICAL LOADS WHICH ARE CONNECTED VIA SWITCH ARE IN SERIES CONNECTION IN ORDER TO OPERATE LOAD WHENEVER REQUIRED VIA SWITCH. IGNITION COIL IS SERIES TO DISTRIBUTOR ITS SERIES TO SPARK PLUG BECAUSE THE HIGH VOLTAGE GENERATED IN IG COIL TRAVEL VIA DISTRIBUTOR TO REQUIRED SPARK PLUG BASED ON FIRING ORDER AND IGNITION TIMING IN ORDER TO CREATE SPARK IN SPARK PLUG INSIDE COMBUSTION CHAMBER.