bottom dead centre

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bottom dead centre

n
(General Engineering) engineering the position of the crank of a reciprocating engine when the piston is at its nearest point to the crankshaft. Also called: outer dead centre
References in periodicals archive ?
Besides the size and length of the pipe from header to tips, one also factors in pressure differentials at bottom dead centre versus halfway towards top dead centre, resonance, timing of the exhaust pulses, valve timing, positive and negative initial and reflected sonic pressure waves and how they behave at various engine speeds (rpms), inertial scavenging and how the evacuation of exhaust gases might assist in the efficiency of the induction stroke.
The cylinder pressure is collected via a charge amplifier (ETAS ES630.1) with a resolution of 0.1 crank angle (CA) between -30 [degrees]CA and 70 [degrees]CA after top dead centre (ATDC), and a resolution of 1 [degrees]CA in the rest of the crank angles.
The grid for the cylinder volume at TDC (top dead centre) has approximately 25,231 hexahedral cells.
At Top dead centre of the piston the crank angle is assumed to be zero([alpha] = 0).
As the power piston ascends, it forces air into both cylinders in the correct proportions until it is at top dead centre, sealing off the ports to each.
Pay attention when buying, though, as the Clio was recalled for a dodgy brake light switch in 2007, and some owners have reported glitches with the top dead centre (TDC) sensor.