Fuel pump has sealing device between working chamber and bearing containing at least one sealing element associated with pump element, e.g. two sealing elements with separating volume

摘要

The fuel pump has at least one pump element (13) movable within a cylinder connected to a working chamber, a drive device with a drive shaft, at least one bearing for the drive shaft and a sealing device between the working chamber and bearing containing at least one sealing element associated with the pump element. There can be two sealing elements (73,75) at a distance apart and separated by a separating volume (79).