Patent · US Expired

Apparatus and method for valve control

US5875764A · kind A · utility

56Cited by

8References

34Claims

0Family size

Assignees

Siemens Aktiengesellschaft · DE
Siemens Automotive Corporation · US

Inventors

Andreas Kappel · Höhenkirchen-Siegertsbrunn, DE
Randolf Mock · Munich, DE
Hans Meixner · Haar, DE
Edward J. Hayes · Elmhurst, US

Key dates

Filing date	May 13, 1998
Grant date	Mar 2, 1999
Priority date	—
Expiry date	May 13, 2018

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2200/706
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An easily controllable primary drive (5) guided in a first bore (3), for example a piezo actuator, transmits its stroke by a piston-hydraulic stroke transmission with a hydraulic chamber (2) onto a stroke element (70) of the secondary side guided in a second bore (4). The pressure in a valve chamber (9) is controlled via the stroke element (7) of the secondary side.

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