dead centre
Noun
Meaning
the position of a crank when it is in line with the connecting rod and not exerting torque
Source: WordNetSynonyms
Hypernyms
Examples
The nozzle opening was closed by a pin valve lifted by the camshaft to initiate the fuel injection before top dead centre ( TDC ).
Starting at 1, the piston is at bottom dead centre and both valves are closed at the start of the compression stroke; the cylinder contains air at atmospheric pressure.
The timing is measured in degrees of crank angle of the piston before top dead centre.
This graveyard led to Glasnevin being known as "the dead centre of Dublin".