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Transcript of ATASA 5 Ignition Systems - School District of Grafton · Secondary = 15,00020,000 turns of very...
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ATASA 5 th Ignition Systems ATASA 5 TH Study Guide Chapter 27 Pages 810835 Ignition Systems 68 Points
Please Read the Summary
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Before We Begin…
Keeping in mind the Career Cluster of Transportation , Distribution & Logistics
Ask yourself:
What careers might be present in this slide series?
What careers might interest me?
How do these careers relate to my other high school classes?
What career cluster is my 4year plan preparing me for?
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Is there a career for me that melds 2 or more of my favorite clusters?
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1. The ____________ system provides the properly timed, high voltage surges to ignite the A/F mixture in the cylinders. Improper ignition affects fuel economy, performance & emissions.
ATASA 5 th Ignition Systems
Injection Ignition Control
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2. Ignition system designs are either distributor, ____________ (coil pack) or _______ (coilonplug).
ATASA 5 th Ignition Systems
Distribution, Indirect Distributorless, Direct Indirect, Coil Pack
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ATASA 5 th Ignition Systems 2. Ignition system designs are either distributor, ____________ (coil pack) or
_______ (coilonplug).
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ATASA 5 th Ignition Systems 2. Ignition system designs are either distributor, ____________ (coil pack) or
_______ (coilonplug).
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3. The __________ circuit is the low voltage circuit and the ______________ is the high voltage ignition system circuit. The primary is also the low resistance coil & secondary the high resistance coil.
ATASA 5 th Ignition Systems
Secondary, Primary Coil, Distributor Primary, Secondary
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ATASA 5 th Ignition Systems
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ATASA 5 th Ignition Systems
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ATASA 5 th Ignition Systems
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4. Battery current is switched on by the ___________ _________ to supply the primary circuit.
ATASA 5 th Ignition Systems
Injection Switch Ignition Switch Capacitor Switch
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5. When the ___________ field in the primary ignition coil ______________ through the secondary ignition coil windings, a high voltage surge is generated (induced) & then sent to the plugs.
ATASA 5 th Ignition Systems
Energetic, Collapses Magnetic, Collapses Magnetic, Relapses
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6. Older ignition systems used a _________ resistor or a calibrated resistance wire to act as a voltage drop in the primary circuit, limiting full charging voltage from reaching the primary coil.
ATASA 5 th Ignition Systems
Ballast RFI Variable
Ask about the Start & Run Circuits
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7. The ______________ circuit carries the high voltage to the spark plugs.
ATASA 5 th Ignition Systems
Base Primary Secondary
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8. In a distributor system, the ______ & _________ deliver the sparks in the correct order.
ATASA 5 th Ignition Systems
Cap & Rotor Cap & Reluctor Module & Rotor
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ATASA 5 th Ignition Systems
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9. EI systems, either wasted spark or direct, have _______ firing current & _________ spark duration.
ATASA 5 th Ignition Systems
Higher, Longer Lower, Shorter Bigger, Faster
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10. An ignition ________ is a pulse _________________ that has two coils of wire wrapped around an iron core. Primary coil = 100200 turns of AWG 20 wire. Secondary = 15,00020,000 turns of very fine wire.
ATASA 5 th Ignition Systems
Coil, Transformer Coil, Reluctor Coil, Armature
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11. Iron or steel cores are used in ignition coils to reduce ______________ to magnetic lines of force.
ATASA 5 th Ignition Systems
Resistance Reluctance Reactance
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ATASA 5 th Ignition Systems
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12. __________ is the name given to the length of time the primary current flows in order to saturate the coil primary windings with magnetic fields. …often now just called “coil saturation time”.
ATASA 5 th Ignition Systems
Saturation Dwell Duration
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12. __________ is the name given to the length of time the primary current flows in order to saturate the coil primary windings with magnetic fields. …often now just called “coil saturation time”.
ATASA 5 th Ignition Systems
Saturation Dwell Duration
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13. _______________ is the term used to describe temporary resistance to current flow in the primary coil caused by magnetic field interference. This is the “F” in LSMFT (5 causes of resistance in a path).
ATASA 5 th Ignition Systems
Resistance Reluctance Reactance
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ATASA 5 th Ignition Systems
Reactance
Resistance
Reluctance
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14. A coil ____________ with magnetism will have more potential to produce its designed voltage.
ATASA 5 th Ignition Systems
Saturated Emulated Intimidated
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15. Secondary coil windings are wound on the _______________ of the primary windings collapse inward.
ATASA 5 th Ignition Systems
Inside Outside Middle
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16. The difference between the voltage required to ________ the plugs and the maximum __________ voltage, is called secondary reserve voltage. This reserve is designed to prevent misfire under load.
ATASA 5 th Ignition Systems
Fire, Output Fire, Input Fire, Battery
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17. The spark plug ______ ______ is where high voltage causes the arc needed to ignite the A/F mix.
ATASA 5 th Ignition Systems
Air Gap Air Rap Air Nap
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18. ________ on the insulator prevent electric arcing on the outside of the spark plug.
ATASA 5 th Ignition Systems
Nibs Ribs Fibs
Insulator Ribs
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19. Spark plugs have either an ___ mm or a 14 mm diameter thread sealed with either a steel washer or a tapered seat. Tightening specs differ depending upon the sealing method used.
ATASA 5 th Ignition Systems
1 mm 18 mm 25 mm
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20. Thread ________ (length) is crucial to properly position electrode gap in the combustion chamber.
ATASA 5 th Ignition Systems
Reach Range Ranch
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ATASA 5 th Ignition Systems
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ATASA 5 th Ignition Systems
5.4 Liter Ford Triton V8
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21. As heat range goes, a cold plug has a _________ nose and a hot plug has a ______ insulator nose.
ATASA 5 th Ignition Systems
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ATASA 5 th Ignition Systems
Longer Path for Heat to Flow before being Cooled
Shorter Path for Heat to Flow before being Cooled
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22. ________________ type spark plugs have a 5kΩ internal resistor used to “suppress” RFI. Radio Frequency Interference = Static Noise
ATASA 5 th Ignition Systems
Reluctor Resistor Reactor
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ATASA 5 th Ignition Systems
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23. The ___________ used in electrode construction determine a spark plug’s longevity, power & efficiency. Electrode materials include coppernickel alloys, platinum, iridium, and yttrium.
ATASA 5 th Ignition Systems
Materials Processes Designs
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24. Vgroove, Ugroove & pinpoint ____________ designs require lower firing voltages.
ATASA 5 th Ignition Systems
Electrode Thread Resistor
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25. Television & Radio Suppression (TVRS) plug wiring uses carbon impregnated __________ cores without actual wire inside. This is done to lower RFI & EMI.
ATASA 5 th Ignition Systems
Fiber Rope Steel
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26. Electronic ignition systems switch the __________ current on & off using an NPN transistor. The emitter is connected to ground, the collector to the coil negative terminal & the base is switched with a triggering device to interrupt (switch) the ground side of the primary coil.
ATASA 5 th Ignition Systems
Primary Secondary Base
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27. Sensors, like the CKP & CMP, are used to trigger the NPN. These sensors can be ___________ pulse generators, ________________ sensors, _____________ sensors & metal detection sensors.
ATASA 5 th Ignition Systems
Magnetic, HallEffect, Optical Reluctant, HallEffect, Optical Reactant, HallEffect, Optical
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28. Magnetic pulse generators consist of a __________ coil & a trigger wheel called a ___________. These are also known as PM generators because they contain permanent magnets.
ATASA 5 th Ignition Systems
Pickup, Reactor Pickup, Reluctor Pickup, Resistor
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29. Metal detection sensors use pickup coils with ______________ instead of permanent magnets.
ATASA 5 th Ignition Systems
Electromagnets Ribbon Magnets Horseshoe Magnets
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30. The Halleffect sensor is the most popular type of engine position sensor due to its _________voltage signal throughout the entire engine rpm range and its ability to produce a square wave.
ATASA 5 th Ignition Systems
Average Inaccurate Accurate
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31. Photoelectric sensors use _______ ___________ diodes and photo transistors as triggers.
ATASA 5 th Ignition Systems
LightAbsorbing Light Emitting LightDuty
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ATASA 5 th Ignition Systems
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Note: Firing Order is the sequence in which the sparks occur that ignite the A/F mixture. (True Sparks or Event Sparks Only)
http://img153.image shack.us/img153/18 3/mercedescorrecte dkk8.gif
ATASA 5 th Ignition Systems
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Be able to sketch the spark plug wiring for a 4 cylinder, inline engine with a distributorless ignition system and a 1342 firing order.
1 2 3 4
Note: Cylinder #1 and #4 are Companions
Cylinder #2 and #3 are Companions
ATASA 5 th Ignition Systems
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Sketch the spark plug wiring for a V8 engine with a distributor in the rear of the engine, a clockwise rotation, a 18436572 firing order, with cylinder #1 up front on the driver’s side, odd #’ed cylinders on
the driver’s side, & #1 plug wire located at 6 o’clock on the distributor.
2 4 6 8
7 5 3 1
ATASA 5 th Ignition Systems
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32. Adjusting the __________ the spark happens is critical to efficient engine operation.
ATASA 5 th Ignition Systems
Way Time Method
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33. Ignition timing is specified by relating the position of #___ piston to degrees of crank rotation.
ATASA 5 th Ignition Systems
#1 #4 #8
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34. Spark timing that is called “0” occurs at exactly _____ at the end of the _______________ stroke.
ATASA 5 th Ignition Systems
BDC, Compression TDC, Power TDC, compression
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ATASA 5 th Ignition Systems
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ATASA 5 th Ignition Systems
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35. Both _______ sensitive (vacuum) and ______ sensitive (mechanical) devices have been used to change the timing of the spark. The PCM uses MAP (load) CKP (speed) sensors as timing inputs.
ATASA 5 th Ignition Systems
Load, RPM Load, Speed Load, Torque
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36. Distributors may contain an integral ______ as well as an integral _______.
ATASA 5 th Ignition Systems
Coil, Module Coil, Advance Coil, PCM
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37. Distributorless (EI) systems are either __________ spark or _______over cylinder designs.
ATASA 5 th Ignition Systems
Wasted, Coil Wasted, Plug Wasted, Valve
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38. EI systems eliminate parts that caused resistance & needed maintenance, reduced ______, increased time for _______ saturation, allow individual control of cylinders, and operate cooler.
ATASA 5 th Ignition Systems
Cost, Coil Misfire, Plug Cost, Fuel
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39. On __________ spark (doubleended coils), one coil is connected in series with two spark plugs.
ATASA 5 th Ignition Systems
Wasted Direct True
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ATASA 5 th Ignition Systems
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40. ___________ cylinders fire simultaneously, 1 on compression (event) and 1 on exhaust stroke (waste).
ATASA 5 th Ignition Systems
2 4 6
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41. Coilpercylinder ignition (direct) can be coil__plug or coil______plug.
ATASA 5 th Ignition Systems
CoilonPlug CoilnearPlug
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42. On any and every ignition system design, timing at each cylinder can be individually changed for maximum performance. True or False
ATASA 5 th Ignition Systems
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43. Some engines have 2 spark plugs per cylinder. True or False
ATASA 5 th Ignition Systems
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44. Some engines can fire multiple sparks from the same spark plug on one stroke. True or False
ATASA 5 th Ignition Systems
HYFIRE VI IGNITION SYSTEM CD MultiStrike CD Ignition Features At A Glance: Stateoftheart digital circuitry with 4 times faster processing. Boost proportional retard capability with optional harness. 2 stage rev limiting in 100 RPM increments. Automatic start retard circuit for easier starting. Builtin RPM Window Switch which is great for nitrous oxide. Easytouse digital display with push button controls. Great for supercharged, turbocharged and nitrous applications. Primary Output Voltage: 525, Secondary Voltage Output: 45000, Spark Energy: 137mj.
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45. Engine position sensors used for spark triggering can also be used to detect _____________.
ATASA 5 th Ignition Systems
Mileage Misfire Emissions
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ATASA 5 th Ignition Systems
Crankshaft Toner Ring
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46. Spark timing corrections are made to engines in an effort to compensate or correct or adapt for:
coolant TEMPERATURE engine KNOCK
stabilizing engine IDLE EGR operation
TRANSITION correction TORQUE control
TRACTION control correction
ATASA 5 th Ignition Systems
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ATASA 5 th Ignition Systems
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Now that we’re through…
Keeping in mind that Career Clusters sensibly link education to careers…
Ask yourself:
What careers could be linked to the topics in this slide series?
Which of those careers might interest me?
How do career clusters relate to my other high school classes?
Do I need to change my 4year plan to fit my desired career?