closed nozzle

closed nozzle

[¦klōzd ′näz·əl]
(mechanical engineering)
A fuel nozzle having a built-in valve interposed between the fuel supply and combustion chamber.
References in periodicals archive ?
The KEG-2000 series is engineered for outstanding performance in cold runner systems with both open and closed nozzle configurations.
Realizing his idle thrust was higher than normal due to the fully closed nozzle; he lowered the tail-hook and successfully engaged the departure-end cable at 90 KIAS.
The KEG2000 Series is engineered for outstanding performance in cold runner systems with both open and closed nozzle configurations.
All the closed nozzles are pressurized to the same degree, so that when the nozzle opens, the melt decompresses and "explodes" into the cavity like uncorked champagne, inducing extreme velocity peaks in the melt.