Robert Boschgmbh

Hartmut Lehmann

Eberhard Hofmann

Heinrich Staudt

Wolfgang Eckell

Karl Sontheimer

A fuel injection pump for internal combustion engines includes a housing, which defines an elongated chamber, within which serial pumps including, in respective cylinders, pump pistons driven by a cam shaft via respective cams. The elongated chamber is closed by a single cover. A seal is provided between the cover and the housing by an O-ring tightened between an offset provided on the circumference of the cover and an inwardly facing wall of the housing. The offset provided on the circumference of the housing is so shaped, along its surface facing the inwardly facing wall of the housing that the O-ring is primarily stressed axially, with respect to the direction of fastening of the cover, along two sections which extend in the longitudinal direction of the cover and that the O-ring is primarily stressed radially in the region of the housing adjacent to end walls of the housing.

Growing community of inventors

Stuttgart, Germany

Hartmut Lehmann