Patent · US Active

Switching valve and internal combustion engine having such a switching valve and a method for a switching valve

US9890702B2 · kind B2 · utility

2Cited by

4References

18Claims

0Family size

Assignee

FEV Group GmbH · DE

Inventors

Uwe Schaffrath · Herzogenrath, DE
Karsten Wittek · Flein, DE
Michael Paul · Passau, DE
Paul Grzeschik · Aachen, DE

Key dates

Filing date	Apr 11, 2014
Grant date	Feb 13, 2018
Priority date	—
Expiry date	Aug 2, 2034

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16K31/56
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A switching valve for an internal combustion engine, which has an adjustable compression ratio, namely to control a hydraulic oil flow particularly for an eccentric adjustment mechanism, having a control piston, which can be shifted by a switching mechanism similar to a ballpoint pen mechanism, wherein the control piston controls the hydraulic oil flow dependent on the switch position thereof, wherein the switching mechanism comprises at least one actuation element and a detent element, and wherein at least the control piston, the actuation element and the detent element are nested in each other so that they are implemented in a concentrically overlapping manner, at least in sections, when viewed in the shifting direction of the control piston.

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