The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 14, 2014
Filed:
Aug. 22, 2011
Christian Pottiez, Eppingen, DE;
Bernd Last, Reutlingen, DE;
Georg Rixecker, Leinfelden-Echterdingen, DE;
Martin Sackmann, Benningen, DE;
Christian Pottiez, Eppingen, DE;
Bernd Last, Reutlingen, DE;
Georg Rixecker, Leinfelden-Echterdingen, DE;
Martin Sackmann, Benningen, DE;
BorgWarner BERU Systems, GmbH, Ludwigsburg, DE;
Abstract
A pressure measuring device includes a housing and a rod which is movable in the axial direction in the housing under the effect of combustion chamber pressure where the rod protrudes from the housing. A sensor measure combustion chamber pressure acting on the rod, and a first diaphragm is attached to the housing through which the rod extends. A second diaphragm is attached to the housing through with the rod extends between the sensor and the first diaphragm. The second diaphragm generates a return force when the rod undergoes axial displacement caused by pressure on the rod.