Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Ignition Systems
Important Terms
| Question | Answer |
|---|---|
| Plug wires | High voltage cables used for TV and radio suppression |
| Spark Plug | The component where the spark occurs |
| Ignition Coil Primary | The winding in which the magnetic field is produced |
| Switching device | The component that turns the primary coil on and off |
| Cap and Rotor | Components that deliver the high voltage to the correct spark plug |
| Capacitor/condenser | It helps to rapidly collapse the primary magnetic field |
| Generator/alternator | Supplies on-going power to the ignition system |
| Ignition Switch | Gives the driver control of the ignition system |
| Battery | Supplies initial power to the system |
| Ignition Coil secondary | The winding in which the high voltage is produced |
| Dwell | The amount of time primary coil current flows |
| Saturation time | The time it takes for the primary coil to reach its maximum magnetic field |
| Heat range | A rating for how well a spark plug removes heat from the combustion chamber to the water jackets |
| Spark plug insulator | Made of porcelain, it is used to insulate the high voltage and to burn off deposits. It is key in determining the heat range of a plug |
| Plug gap | The distance between the positive and ground electrode |
| Narrow Point gap | This type of point gap increases dwell which could burn out the ignition coil |
| Hot plug | This plug dissipates heat slowly and may cause mechanical damage if too far from its normal range |
| Cold plug | This plug dissipates heat more quickly but can cause carbon fouling |
| Cold (Static) Timing | The mechanical alignment of the crankshaft and camshaft for #1 cylinder at TDC on the compression stroke |
| Base timing | The initial timing for an idling engine |
| Mechanical timing advance | Timing is adjusted through Centrifugal force using weights versus spring tension based on engine RPM |
| Vacuum timing advance | Timing is adjusted based on engine load using a vacuum diaphragm attached to the base plate |
| Magnetic pick up | A triggering device using a magnet and pick up coil to generate an AC analog signal for the ICM |
| Optical/Photoelectric sensor | A triggering device using an LED and photo-transistor to send a DC digital signal to the ICM |
| Hall Effect device | A triggering device with an Integrated Circuit to create a DC Digital signal for the ICM |
| ICM | Ignition Control Module that controls the on/off time of the primary coil based on various inputs. |
Created by:
jcoombes
Popular Physical Science sets