| 摘要 |
A fuel injection system includes a fuel pump and a nozzle incorporating an orifice. There is disposed between the pump and nozzle, a restrictor. The pressure intermediate the restrictor and the pump is controlled by a relief valve and the fuel flowing past the relief valve passes into a chamber. During the initial delivery of fuel by the pump, fuel flows to the nozzle at a restricted rate by way of the restrictor and when a predetermined volume of fuel has past into the chamber substantially un-restricted flow of fuel takes place from the pump to the nozzle. |
