High pressure fuel pump for the high pressure burner, in a vehicle heating system, has a rupture disk in the backflow drilling which ruptures at a defined pressure to protect the pump and seals on a malfunction

摘要

Closure for backflow drilling (22) is a rupture disk (28) which matches its cross section, at a high pressure fuel pump for a high pressure burner in a vehicle heating system. Rupture disk collapses at a defined pressure of 1-20 bar, and it has a higher resistance to pressure on one side than on the other side of the disk. Rupture disk, with a diameter of 1-3 mm, is held in a separate disk mounting (30) for insertion into the backflow drilling.