Questions and Answers
What does ignition timing refer to?
Engine load is a condition that:
Ignition timing must vary according to:
Which component is NOT part of the primary circuit?
Signup and view all the answers
The coil secondary winding ends are connected to the:
Signup and view all the answers
The coil secondary winding is made up of __________ turns of very fine copper wire.
Signup and view all the answers
As engine speed increases, the ignition timing must be:
Signup and view all the answers
The coil primary winding ends are connected to the:
Signup and view all the answers
Dwell is defined as:
Signup and view all the answers
When the ignition points open:
Signup and view all the answers
Study Notes
Ignition Timing
- Indicates the synchronization between the camshaft and crankshaft, crucial for engine performance.
- Refers to the critical moment when the spark plug fires, ensuring proper fuel combustion.
- Measured in crankshaft degrees from the top dead center (TDC) to the moment combustion is complete.
Engine Load
- Represents the force resisting the crankshaft rotation, affecting engine efficiency.
- Criteria include conditions like uphill driving and towing trailers, stressing the engine more than normal.
Variability of Ignition Timing
- Must adjust to multiple factors: engine temperature, load, and RPM, to optimize performance
- Increased load or RPM typically requires advanced timing for combustion efficiency.
Primary Circuit Components
- Key components of the primary circuit include the battery, ignition switch, and triggering device.
- The spark plug is not part of this circuit, serving a different role in ignition.
Coil Secondary Winding
- Connects to the negative terminal and high tension tower, delivering high voltage to the spark plug.
- Composed of 15,000 to 25,000 turns of fine copper wire, increasing voltage for effective spark generation.
Effect of Engine Speed on Ignition Timing
- As engine speed rises, ignition timing must be advanced to ensure timely fuel combustion and engine efficiency.
Coil Primary Winding
- Ends are connected from positive to negative terminals, forming the primary circuit that initiates the ignition process.
Dwell Time
- Defined as the duration when the points are closed within the ignition system, allowing for a build-up of energy in the ignition coil before discharge.
Action of Ignition Points
- When the ignition points open, it triggers the spark plug to fire, igniting the air-fuel mixture in the combustion chamber.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
This quiz explores the crucial concepts of ignition timing and engine load, essential for optimizing engine performance. Understand how these factors interact and the importance of adjusting timing based on varying conditions. Test your knowledge of primary circuit components in ignition systems.
