HOW BATTERY IGNITION SYSTEM WORKS
Battery Ignition System - This time we will explain the important parts of how the battery ignition system works. We know that the ignition system is a complex electrical system whose function is to generate sparks and start the combustion process. The main parts of a typical battery ignition system are the ballast battery ignition switch, resistor, ignition coil, distributor, condenser, contact breaker, and spark plugs.
Now let's discuss each of these sections one by one.
Rechargeable lead-acid batteries are used to provide electrical energy for ignition.
This battery is recharged by a dynamo driven by a battery engine connected to
the primary. winding of the ignition coil through the ignition switch. This
switch is used to turn the ignition system on or off in prolonged engine
operation, the ignition coil temperature increases which can be dangerous. to
prevent this the ballast resistor made of iron wire supplied in series with the
primary winding iron has the property of rapidly increasing resistance.
If the temperature is exceeded the ballast resistor
helps to keep the current down to a safe value. The ignition coil is a source
of ignition energy whose function is to increase the low voltage to the level
required to induce an electric spark. The spark plug ignition coil consists of
a magnetic soft iron core and two coils of insulated conductor known as the
primary and secondary winding. the primary winding consists of 200 to 300
windings with both ends connected to the exterior terminals. the secondary
winding consists of 21,000 windings with one end connected to a high-voltage wire going to the distributor and the second end connected to a contact
breaker.
The primary coil is a mechanical device for making and
breaking a primary circuit consisting of two metal points one fixed and the
other movable. while the metal point remains connected to the contact breaker
assembly, the film will be connected to the spring shaft sleeve. This
spring on the arm keeps the two metal points in contact thus closing the
rotating main circuit. the arm has a centrally mounted heel that rests on the
engine-driven to camp.
Now as the high point in the camp passes under the
heel cutout and current flows through the contact breaker the condenser is
connected in parallel with the breaker contacts to prevent the burning of the metal
points and also helps provide ignition energy to the secondary winding provided
the distributor to distribute the ignition surge to the spark plugs. individual
in the right order and at the right time consisting of the rotor in the middle
and the metal electrodes at the edges, these metal electrodes are connected
directly to the spark plug and is also known as the harness.
The secondary winding ignition of the ignition coil is
connected to this distributor rotor which is driven by the camshaft as the rotor
rotates passing a high voltage current to the ignition harness which then
carries this high voltage current to the spark plug.
The spark plug is the output portion of the entire
ignition system which consists of two electrodes, one attached to the high-voltage
current-carrying wire and the other grounded. the potential difference created
between these electrodes ionizes the gaps between them and thus a spark is
generated which ignites the combustible mixture.
Now let's try to understand how the ignition system
works when the ignition switch is turned on, the primary circuit closes and
current begins to flow through it this current is known as the primary current
which forms the magnetic field around the malleable iron core, from the
ignition coil when the breakpoint is opened by cam action, the current flowing
through the contact, the breaker begins to flow through the condenser. as the
condenser charges the primary current and the magnetic field collapses this
change in the magnetic field induces a current in the primary to flow in the
same direction as the primary current and charges the condenser to a voltage
much higher than the battery voltage thus stopping the current flow from the
battery. due to this the condenser is then discharged into the battery thus reversing
the direction of the primary current and the magnetic field this rapid collapse
and reversal of the magnetic field causing a very high voltage.
In the secondary winding, the high voltage ignition
coil is then carried through the high voltage wire to the distributor rotor
where it passes one of the ignition wires to the spark plug and produces a
spark note. Another very important function of the condenser is to prevent the
arc across the breakpoint if the condenser is not connected in the main circuit,
the extra voltage induced due to collapsing magnetic fields will cause the arc
to cross the breakpoint which can be dangerous. To prevent this a condenser is
used which absorbs all the voltage to charge itself above the battery voltage
in the circuit diagram of this system. now let's summarize the important parts
and how the battery ignition system works.
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