spark advance
Học thuậtThân thiện
Definition
Noun: - The timing of ignition relative to the position of the piston in an internal-combustion engine: This term refers to the precise adjustment of when the spark plug fires in relation to the piston's movement within the cylinder. It is a critical setting for engine efficiency and performance.
Usage
"Spark advance" is a technical term used primarily in automotive and mechanical engineering contexts. It describes a specific engine timing parameter.
Examples
- Noun:
- The mechanic adjusted the spark advance to improve the car's fuel efficiency.
- Too much spark advance can cause engine knocking, which is harmful.
Advanced Usage
"To set the spark advance": To adjust the ignition timing to a specific position.
- You need special tools to properly set the spark advance on older vehicles.
"Initial spark advance": The base timing setting before any automatic adjustments by the engine's control systems.
- Check the manual for the correct specification for initial spark advance.
Variants and Related Words
- Ignition timing: A more general synonym for the same concept.
- Advance (in this context): Often used shorthand within the field (e.g., "more advance," "less advance").
- Spark retard: The opposite adjustment, where ignition is timed to occur later.
Synonyms
- Ignition timing
- Timing advance
Related Phrases
- Mechanical advance: A system that adjusts timing based on engine speed using centrifugal weights.
- Vacuum advance: A system that adjusts timing based on engine load using intake manifold vacuum.
Noun
- the timing of ignition relative to the position of the piston in an internal-combustion engine