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top dead center — (TDC) Highest point of piston and connecting rod travel in a cylinder; the ends of the compressionexhaust strokes in a four cycle engine. See after top dead center before top dead center … Dictionary of automotive terms
after top center/after top dead center — The position of a piston in the cylinder of a reciprocating engine after the crankshaft, turning in its normal direction of rotation, has caused a piston to pass the top of its stroke and start back down. The crankshaft, crankpin, and cylinder… … Aviation dictionary
top dead center — The position of the piston within the cylinder when the piston has reached its farthest uppermost (closest to the cylinder head and valves) position … Aviation dictionary
top dead center — … Useful english dictionary
dead center — n. 1. the position of maximum (top dead center) or minimum (bottom dead center) extension of a crank and a connecting rod, in which both are in the same straight line 2. a nonrevolving center, as of a lathe spindle 3. the exact center … English World dictionary
dead center — The point at which the piston reaches its uppermost or lowermost position in the cylinder the rod crankjournal would be at 11 o clock UDC or 6 o clock LDC. Also see after bottom dead center after top dead center before bottom dead center before… … Dictionary of automotive terms
dead center position — The position of the piston in a reciprocating engine in which the wrist pin, the crank pin, and the center of the crankshaft are all in one line. The two dead center positions are top dead center (TDC) and bottom dead center (BDC). At either of… … Aviation dictionary
before top dead center — (BTDC) As the crankshaft rotates, it pushes the piston up to a place just before the top of its movement … Dictionary of automotive terms
bottom dead center — (BDC) The lowest point of the piston and connecting rod travel in a cylinder. In a horizontally opposed engine, it is sometimes called the outer dead center. Opposite to top dead center. Also see after bottom dead center before bottom dead center … Dictionary of automotive terms
upper dead center — See before upper dead center top dead center … Dictionary of automotive terms
