| 摘要 |
A fuel injector for use in conjunction with a common rail supply system comprises a nozzle within which a valve element is slidable. The valve element includes a thrust surface to which fuel is supplied from a source of fuel at high pressure through a supply passage. The pressure controller in the form of a restrictor is located in the supplied passage so that, in use, during injection the fuel pressure applied to the thrust surface falls to a level lower than that prior to injection.
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