ATASA 5 Ignition Systems - School District of Grafton · Secondary = 15,00020,000 turns of very fine wire. ATASA 5 th Ignition Systems Coil ... engine with a distributor ... optional

ATASA 5 th Ignition Systems ATASA 5 TH Study Guide Chapter 27 Pages 810835 Ignition Systems 68 Points

Please Read the Summary

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?

Is there a career for me that melds 2 or more of my favorite clusters?

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

2. Ignition system designs are either distributor, ____________ (coil pack) or _______ (coilonplug).


Distribution, Indirect Distributorless, Direct Indirect, Coil Pack

ATASA 5 th Ignition Systems 2. Ignition system designs are either distributor, ____________ (coil pack) or

_______ (coilonplug).

ATASA 5 th Ignition Systems 2. Ignition system designs are either distributor, ____________ (coil pack) or

_______ (coilonplug).

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.


Secondary, Primary Coil, Distributor Primary, Secondary




4. Battery current is switched on by the ___________ _________ to supply the primary circuit.


Injection Switch Ignition Switch Capacitor Switch

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.


Energetic, Collapses Magnetic, Collapses Magnetic, Relapses

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.


Ballast RFI Variable

Ask about the Start & Run Circuits

7. The ______________ circuit carries the high voltage to the spark plugs.


Base Primary Secondary

8. In a distributor system, the ______ & _________ deliver the sparks in the correct order.


Cap & Rotor Cap & Reluctor Module & Rotor


9. EI systems, either wasted spark or direct, have _______ firing current & _________ spark duration.


Higher, Longer Lower, Shorter Bigger, Faster

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.


Coil, Transformer Coil, Reluctor Coil, Armature

11. Iron or steel cores are used in ignition coils to reduce ______________ to magnetic lines of force.


Resistance Reluctance Reactance


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”.


Saturation Dwell Duration

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”.


Saturation Dwell Duration

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).


Resistance Reluctance Reactance


Reactance

Resistance

Reluctance

14. A coil ____________ with magnetism will have more potential to produce its designed voltage.


Saturated Emulated Intimidated

15. Secondary coil windings are wound on the _______________ of the primary windings collapse inward.


Inside Outside Middle

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.


Fire, Output Fire, Input Fire, Battery

17. The spark plug ______ ______ is where high voltage causes the arc needed to ignite the A/F mix.


Air Gap Air Rap Air Nap

18. ________ on the insulator prevent electric arcing on the outside of the spark plug.


Nibs Ribs Fibs

Insulator Ribs

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.


1 mm 18 mm 25 mm

20. Thread ________ (length) is crucial to properly position electrode gap in the combustion chamber.


Reach Range Ranch



5.4 Liter Ford Triton V8

21. As heat range goes, a cold plug has a _________ nose and a hot plug has a ______ insulator nose.



Longer Path for Heat to Flow before being Cooled

Shorter Path for Heat to Flow before being Cooled

22. ________________ type spark plugs have a 5kΩ internal resistor used to “suppress” RFI. Radio Frequency Interference = Static Noise


Reluctor Resistor Reactor


23. The ___________ used in electrode construction determine a spark plug’s longevity, power & efficiency. Electrode materials include coppernickel alloys, platinum, iridium, and yttrium.


Materials Processes Designs

24. Vgroove, Ugroove & pinpoint ____________ designs require lower firing voltages.


Electrode Thread Resistor

25. Television & Radio Suppression (TVRS) plug wiring uses carbon impregnated __________ cores without actual wire inside. This is done to lower RFI & EMI.


Fiber Rope Steel

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.


Primary Secondary Base

27. Sensors, like the CKP & CMP, are used to trigger the NPN. These sensors can be ___________ pulse generators, ________________ sensors, _____________ sensors & metal detection sensors.


Magnetic, HallEffect, Optical Reluctant, HallEffect, Optical Reactant, HallEffect, Optical

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.


Pickup, Reactor Pickup, Reluctor Pickup, Resistor

29. Metal detection sensors use pickup coils with ______________ instead of permanent magnets.


Electromagnets Ribbon Magnets Horseshoe Magnets

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.


Average Inaccurate Accurate

31. Photoelectric sensors use _______ ___________ diodes and photo transistors as triggers.


LightAbsorbing Light Emitting LightDuty


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


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


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


32. Adjusting the __________ the spark happens is critical to efficient engine operation.


Way Time Method

33. Ignition timing is specified by relating the position of #___ piston to degrees of crank rotation.


#1 #4 #8

34. Spark timing that is called “0” occurs at exactly _____ at the end of the _______________ stroke.


BDC, Compression TDC, Power TDC, compression



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.


Load, RPM Load, Speed Load, Torque

36. Distributors may contain an integral ______ as well as an integral _______.


Coil, Module Coil, Advance Coil, PCM

37. Distributorless (EI) systems are either __________ spark or _______over cylinder designs.


Wasted, Coil Wasted, Plug Wasted, Valve

38. EI systems eliminate parts that caused resistance & needed maintenance, reduced ______, increased time for _______ saturation, allow individual control of cylinders, and operate cooler.


Cost, Coil Misfire, Plug Cost, Fuel

39. On __________ spark (doubleended coils), one coil is connected in series with two spark plugs.


Wasted Direct True


40. ___________ cylinders fire simultaneously, 1 on compression (event) and 1 on exhaust stroke (waste).


2 4 6

41. Coilpercylinder ignition (direct) can be coil__plug or coil______plug.


CoilonPlug CoilnearPlug

42. On any and every ignition system design, timing at each cylinder can be individually changed for maximum performance. True or False


43. Some engines have 2 spark plugs per cylinder. True or False


44. Some engines can fire multiple sparks from the same spark plug on one stroke. True or False


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.

45. Engine position sensors used for spark triggering can also be used to detect _____________.


Mileage Misfire Emissions


Crankshaft Toner Ring

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



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?

Documents

ATASA 5 Ignition Systems - School District of Grafton · Secondary = 15,00020,000 turns of very fine wire. ATASA 5 th Ignition Systems Coil ... engine with a distributor ... optional