nozzle holder with two-spring injection nozzle and needle-displacement sensor function of the nozzle holder, nozzle, nozzle needle, pressure pin and pressure spring. function of the inlet and outlet ducts. Detection of start of injection by a coil. description ordernumber 1176 see also: twin-choke downdraught carburetor injector for engines with direct petrol injection (GDI) in-line fuel-injection pump with vacuum governor cylinder head four-valve mechanism