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:
May. 11, 2004
Filed:
Aug. 18, 2000
Applicant:
Inventors:
Detlef Pickert, Wolfsburg, DE;
Volker Schumacher, Sassenburg, DE;
Harald Sölter, Braunschweig, DE;
Martin Völtz, Norderstedt, DE;
Assignee:
Volkswagen AG, Wolfsburg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 3/330 ;
U.S. Cl.
CPC ...
G01N 3/330 ;
Abstract
The present invention provides a method and device for determining the viscosity of motor oil in an internal combustion engine comprising: measuring frictional torque of the engine based on engine data, such as, the clutch switch signal which shows whether the clutch is engaged transmitting torque to the drive train; a generator load signal, a starter load signal, acceleration power consumption, and the like.