| 摘要 |
This disclosure deals with a mechanism for adjusting the timing of initiation of injection by a fuel injector of an internal combustion engine. The mechanism includes a piston connected to be moved by a drive for the injector, and another piston which is connected to move the plunger of the injector. timing fluid supply is provided for metering fuel into a timing chamber formed between the two pistons. The timing fluid forms a variable length hydraulic link between the two pistons, and the length of the link determines the timing of initiation of injection. The mechanism further includes pressure relief means for releasing a portion of the timing fluid after the termination of injection, the relief means comprising a pressure responsive valve. |
