| 摘要 |
FIELD: engines and pumps.SUBSTANCE: sprayer of fuel injector for internal combustion engines (ICE) includes housing (2) and spraying needle (3). Annular cavity (5) is formed in the housing. Spraying needle (3) is located in cavity (5) in movable manner in longitudinal direction. Sealing surface (11) of spraying needle (3) interacts with seat (7). Spraying needle (3) opens or closes the fuel flow passage through a gap between itself and wall of annular cavity (5) at least to one spraying hole (8). Slot-type throttle (15) is formed between spraying needle (3) and wall of annular cavity (5). Slot-type throttle (15) has sharp edge. Slot-type throttle (15) can be formed between collar (17) on spraying needle (3) and wall of annular cavity (5).EFFECT: ensuring the throttling action that does not depend on fuel temperature.9 cl, 5 dwg |
