spark advance

Spark advance

Early automobiles had a spark control that allowed the timing of the spark with respect to the position of the piston to be manually adjusted. Retarded too much, the engine would not run well at high speeds. Advanced too much and the engine would fire too soon and kick while being cranked. This sometimes resulted in a broken arm.

Thesaurus

Noun

spark advance - the timing of ignition relative to the position of the piston in an internal-combustion engineleadtiming - the time when something happens

spark advance

Normal position when spark takes place. spark advance

Position of piston and crankshaft when spark is advanced by 15°.The angular position of the crankshaft, relative to top dead center, at the moment of spark ignition. A 15° spark advance means that the spark is applied when the crankshaft is 15° from reaching top dead center on the compression stroke.

See SPARKADV

spark advance

noun

Synonyms for spark advance

noun the timing of ignition relative to the position of the piston in an internal-combustion engine

Synonyms

lead

Related Words

timing

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