Patent · US Active

Check valve, high-pressure component, and high-pressure fuel pump

US10746148B2 · kind B2 · utility

3Cited by

6References

9Claims

0Family size

Assignee

VITESCO TECHNOLOGIES GMBH · DE

Inventors

Markus Zankl · Waldmünchen, DE
Helmut Kamm · Roding, DE
Josef Tremmel-Burian · Cham, DE

Key dates

Filing date	Sep 18, 2017
Grant date	Aug 18, 2020
Priority date	—
Expiry date	Sep 18, 2037

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16F1/123
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Various embodiments include a check valve for a high-pressure component in a fuel injection system comprising: a valve housing with a valve hole having an inner diameter; a valve seat and a sealing element arranged in the valve hole; and a coil spring pushing the sealing element toward the valve seat along a longitudinal axis of the valve hole. The coil spring includes a plurality of coil turns each having an outer diameter. In a non-assembled state of the check valve, the outer diameter of at least one of the coil turns is greater than the inner diameter of at least a portion of the valve hole, so that in an assembled state of the check valve, the coil spring is secured in a force-fitting manner in the valve hole.

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