- spark position
- The position of the spark gap in the combustion chamber. Also see projected spark position and recessed spark position
Dictionary of automotive terms. 2015.
spark position
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projected spark position — The amount the spark plug gap projects into the combustion chamber: 1 mm for the slightly projected spark position in older engines and 3 mm for the normally projected spark position in modern engines … Dictionary of automotive terms
recessed spark position — A position where the spark gap is actually in the shell of the spark plug. It is used for racing and special engines … Dictionary of automotive terms
spark — The bridging or jumping of a gap between two electrodes by a current of electricity. One of the essential factors in a combustion engine (Fuel, Air, Proper proportion of mixture, compression, timing, Spark). See electronic spark advance… … Dictionary of automotive terms
position — See driving position flat position welding flat position horizontal position overhead position pole position projected spark position recessed spark position spark position … Dictionary of automotive terms
Spark-gap transmitter — A spark gap transmitter is a device for generating radio frequency electromagnetic waves. These devices served as the transmitters for most wireless telegraphy systems for the first three decades of radio (1887 ndash;1916) and the first… … Wikipedia
spark advance — 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. Normal… … Aviation dictionary
spark advance — Causing the spark plug to fire earlier by altering the position of the distributor breaker points in relation to the distributor shaft. See advance electronic spark advance ignition advance … Dictionary of automotive terms
spark-ignition engine — A form of reciprocating engine in which the fuel air mixture in the cylinder is ignited by an electric spark. This occurs when the piston is in the correct position during the compression stroke … Aviation dictionary
spark lead — ˈ ̷ ̷ˌlēd noun : the amount of advance by which the production of the spark in the cylinders of an internal combustion engine precedes the arrival of the piston at the top dead center position … Useful english dictionary
spark advance — noun the timing of ignition relative to the position of the piston in an internal combustion engine • Syn: ↑lead • Hypernyms: ↑timing * * * noun : lead II 3d(2) … Useful english dictionary
