Common rail for use in fuel supply system, has closing unit shifted to connect one of chamber to other chamber if fuel pressure inside latter chamber is larger than threshold value of fuel pressure

摘要

The rail has a closing unit (18) isolating a chamber (16) from a chamber (14) and injectors (12) during a starting phase of an engine and connecting the chamber (16) with the chamber (14) and injectors during operation of the engine in normal mode. The unit is shifted to connect the chamber (16) to the chamber (14) if the fuel pressure inside the chamber (14) is larger than a threshold value of the fuel pressure.