Hochdruck-Kraftstoffpumpe für ein Kraftstoffsystem einer direkteinspritzenden Brennkraftmaschine, Kraftstoffsystem sowie Brennkraftmaschine

摘要

A high pressure fuel pump (10) is used for a direct injection internal combustion engine, comprising a housing (14, 32) and provided with a low pressure inlet (16) and a pumping chamber (20). The fuel is compressed in the pumping chamber (20) and an insert (38) is provided, which separates the pumping chamber (20) from the low pressure inlet (16). The insert (38) comprises at least one radial flow channel (48) and said insert (38) is axially supported by the housing (32). The high pressure fuel pump (10) further comprises a high pressure outlet (18). According to the invention, the production costs of the high pressure fuel pump (10) may be reduced, whereby the radial flow channel (48) is defined by a recess in an axial end face (44) of the insert (38).