es a method of turning a spark ignition engine on & rates on various supply voltages (Battery & Alternator) es high voltage arcs at the spark plug electrode. ibutes spark to each plug in correct sequence. spark so that it occurs as the piston nears the TD ion stroke. he ignition timing as engine speed, load and other
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•Provides a method of turning a spark ignition engine on & off.
•Operates on various supply voltages (Battery & Alternator)
•Produces high voltage arcs at the spark plug electrode.
•Distributes spark to each plug in correct sequence.
•Times the spark so that it occurs as the piston nears the TDC on the compression stroke.
•Varies the ignition timing as engine speed, load and other conditions change.
BATTERY provides power for system.
IGNITION SWITCH allows driver to turn ignition on and off.
IGNITION COIL changes battery voltage to 30,000V during normal operation and has a potential to produce up to 60,000V.
SWITCHING DEVICE mechanical or electronic switch that operates Ignition coil(Pick-up coil, Crank sensor, Cam sensor).
SPARK PLUG uses high voltage from ignition coil to produce an arc in the combustion chamber.
•Includes all the components working on low voltage (Battery, Alternator).
SECONDARY CIRCUIT
•Consists of wires and points between coil out-put and the spark plug ground.
Primary Windings are made up of several hundred turns of heavy wire wrapped around or near the secondary windings.
Secondary Windings consist of several thousandturns of very fine wire, located inside or nearthe secondary windings.
•Actuates the on/off cycle of current flow through the ignition coil primary windings.
•It distributes the coils high voltage to the plugs wires.
•It causes the spark to occur at each plug earlier in the compression stroke as engine speed increases, and vice versa.
•Changes spark timing.
•Some distributor shafts operate the oil pump.
PARTS Distributor Cam, Breaker Points, and Condenser.
Points are wired in Primary Circuit – When the points are closed, a magnetic field builds in the coil. When the points open, the field collapses and voltage is sent to one of the spark plug.