Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun automotive A position in the four-stroke combustion process wherein the piston is at the topmost point in its stroke. This can either be during the compression phase or the combustion phase.
- noun automotive The reference mark on a flywheel (and engine block) indicating the engine is in the top dead center position, when aligned.
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hernesheir commented on the word top dead center
(n.) The absolute top of a piston's stroke within a piston engine's cylinder (a.k.a. TDC). Top dead center is the reference point from which ingition timing is calibrated.
September 10, 2009