Back to results
US 2012/0234296 A1Published application
Pressure pipe fitting for a common-rail injection system
AssigneeRobert Bosch GmbH
InventorsChristian Graspeuntner, Gerhard Unterberger
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeRobert Bosch GmbH
InventorsChristian Graspeuntner, Gerhard Unterberger
Estimating the term…
A pressure pipe fitting for feeding high-pressure fuel to, and discharging fuel from, an injector of a common-rail injection system of an internal combustion engine includes at least one inner pipe and an outer pipe coaxially arranged with the inner pipe, with an annular space formed between the outer and inner pipes, and an intermediate piece arranged in the annular space for coaxially positioning the inner pipe and the outer pipe. The inner pipe preferably has conical seat surface on its end face. A threaded connection is provided to position the intermediate piece at a defined axial distance from the seat surface on the inner pipe. The inner pipe comprises a stop acting in the axial direction and cooperating with a counter-stop of the intermediate piece.
A pressure pipe fitting for feeding high-pressure fuel to, and discharging fuel from, an injector of a common-rail injection system of an internal combustion engine, including at least one inner pipe and an outer pipe arranged coaxially with the inner pipe, and an intermediate piece, which is arranged in the annular space formed between the outer pipe and the inner pipe, for coaxially positioning the inner pipe and the outer pipe, wherein the inner pipe optionally has a conical seat surface on its end face, and a threaded connection is provided to position the intermediate piece at a defined axial distance from the seat surface on the inner pipe, characterized in that the inner pipe (12) comprises a stop (21) acting in the axial direction and cooperating with a counter-stop of the intermediate piece (13).
Dependencies are inferred from the claim text.