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:
Nov. 20, 2001
Filed:
Dec. 15, 1999
Applicant:
Inventors:
Eckhart Kern, Hofheim, DE;
Werner Wallrafen, Hofheim, DE;
Joachim Acht, Frankfurt, DE;
Volker Wehrmeyer, Königstein, DE;
Assignee:
Mannesmann VDO AG, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01M 1/110 ;
U.S. Cl.
CPC ...
F01M 1/110 ;
Abstract
To monitor adequate oil lubrication of an internal combustion engine, air bubbles in the oil flow are detected by means of a sensor arranged in an oil line of a pressure circulation lubrication system and connected to an electronic evaluation system. These air bubbles are an early indicator of inadequate lubrication of the internal combustion engine.