Patent · US Active

Decoupling element for a fuel injection device

US9347411B2 · kind B2 · utility

5Cited by

11References

11Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Markus Friedrich · Moosburg an der Isar, DE
Martin Scheffel · Leinfelden, DE
Martin Buehner · Backnang, DE

Key dates

Filing date	Nov 12, 2012
Grant date	May 24, 2016
Priority date	—
Expiry date	Nov 19, 2032

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2200/09
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A decoupling element for a fuel injection device has a low-noise construction. The fuel injection device includes at least one fuel injector and one receiving bore in a cylinder head for the fuel injector and the decoupling element between a valve housing of the fuel injector and a wall of the receiving bore. The decoupling element has a nonlinear progressive spring characteristic as a solid-state joint, at least one bearing collar including a valve contact surface, which is designed to be spherical, i.e., convex, extending upward from a flat annular area, the flat annular area being supported on a supporting base, and the inside of the annular area has a smaller inside diameter D than the bearing collar and the supporting base, which is supported on the wall of the receiving bore.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.