Patent · US Active

Hydraulic camshaft adjuster having a mechanical and a hydraulic ratchet

US10844756B2 · kind B2 · utility

0Cited by

0References

20Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Jochen Thielen · Nuremberg, DE
Michael Keck · Leuna, DE
Enno Schmitt · Kulmbach, DE

Key dates

Filing date	Aug 1, 2018
Grant date	Nov 24, 2020
Priority date	—
Expiry date	Aug 1, 2038

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L2001/34479
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The disclosure relates to a hydraulic camshaft adjuster having a stator, which is synchronously rotatable with a crankshaft of the internal combustion engine, a rotor rotatably arranged relative to the stator and synchronously rotatable with a camshaft, two groups of working chambers that can each be loaded with a pressure medium in a pressure medium circuit, and a central locking device for locking the rotor in a defined position relative to the stator. The stator is delimited on a first front end by a multi-part locking cover. The multi-part locking cover has a first locking cover and a second locking cover. A first stage of a mechanical ratchet is formed on the first locking cover, and at least one further stage of the mechanical ratchet is formed on the second locking cover.

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