| 摘要 |
A nozzle assembly (60, 160) for a fuel injector (10) capable of withstanding high-pressures includes a nozzle chamber (61, 161) defined by a high-pressure containment sleeve (70), a tip component (65, 165) defining a nozzle outlet (64, 164), and an injector stack component (85). A leakage path (88, 188) is defined between an injector body casing (52, 152) and an outer wall surface (71, 171) of the high-pressure containment sleeve (70) and a needle valve member (78, 178) that opens and closes the nozzle outlet (64, 164) is out of contact with the high-pressure containment sleeve (70). The high-pressure containment sleeve (70) has a hollow, cylindrical shape and has an inner wall (69) exposed to fluid pressure inside the nozzle chamber (61, 161) that is free of stress concentrating surface features associated with heart shaped cavities in the prior art. |
