Ignition Coils
Recognized as the magnetic field at full strength.
What is saturation.
Ignition switch, primary ignition coil, 12.6v battery, coil control driver in pcm.
What are parts of the primary ignition circuit.
Spark plug, secondary coil, spark plug wires.
What are parts of the secondary ignition circuit.
Has a coil directly on top of one spark plug plus a spark plug wire going from that same coil to the companion cylinder.
What is a version of the waste spark system design.
Known as the first level of information.
What is the CKP signal that communicates that a pair of cylinders are approaching TDC.
A spark plug that fired after TDC.
What is a retarded spark.
The side of this coil is connected to the ignition switch.
What is the positive side of the primary ignition coil.
higher engine temp, wide spark plug gap, higher compression ratios.
What is are variables that increase secondary voltage required to jump the gap.
3kv is a general level of voltage required to fire this spark plug.
What is the wasted spark during the exhaust stroke.
Provides both first and second levels of information to the ignition module/PCM.
What is the CKP.
This occurs when the available voltage is lower than the required voltage within the cylinder.
What is a misfire.
Its considered the controlled side of this coil.
What is the negative side of the primary ignition coil.
Richer fuel mixture, cooler running temperatures, proper air gap.
Variables that lower the secondary voltage required to jump the gap.
Three ignition coils are required for these number of cylinders.
What is a 6 cylinder engine.
This term describes the time it takes to saturate the magnetic field.
What is dwell.
This principle is used to transform low voltage into high voltage.
What is mutual induction.
Voltage is 100 to 200 times greater than voltage in this circuit.
What is the primary self-induced voltage.
These variables have a direct influence on this.
turns ratio
amount of dwell time
time required to collapse the magnetic field
What is secondary voltage.
Crank no start condition and there is a lack of injector pulse.
What is the result of missing CKP information to the PCM
This part of the current wave form indicates the health or condition of the primary coil.
An advantage to this type of coil system is that there is less potential for the secondary circuit to induce a voltage in a nearby circuit.
What are COP coils.
Spark across the spark plug gap occurs when this happens.
the primary coil's ground circuit is broken.
12,000 ignition events happen in a V8 engine at this RPM.
What is 3000 rpms.
SFI engine has a long crank time and eventually the engine starts and idles.
What is the result of missing CMP information
The difference between a peaked current wave form versus a wave form that flattens out.
What is a current limiting versus a non-current limiting primary coil circuit.