Patents by Inventor Tom Ritz

Tom Ritz has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and device for measuring fluid flow
    Patent number: 6381548
    Abstract: Method for measuring a fluid flow, in particular an air flow (L), flowing in a flow canal to an engine (VM) or from an engine (VM), by means of a fluid mass measuring means (3) connected to an evaluation means (2), wherein in a regularly performed cycle an operational parameter (D1, D2, . . . , Dn) characterizing the operating status of the engine (VM) is recorded, the data (M1, M2, . . . , Mn) supplied by the fluid mass measuring means (3) are recorded, at least one extreme value (Ep, En) is determined from the data (M1, M2, . . . , Mn) recorded since the beginning of a time period (t1, t2, . . . , tn), an average value (Wma) is determined from the recorded data (M1, M2, . . . , Mn), a pulsation amplitude (P1, P2, . . . , Pm) is determined by dividing the extreme value (Ep) by the average value (Wma), and the average value (Wma) is corrected by multiplying it by a correction factor (K11, K12, . . . , Kmn) which is selected in dependence on the operational parameter (D1, D2, . . .
    Type: Grant
    Filed: April 5, 1999
    Date of Patent: April 30, 2002
    Assignee: Delphi Technologies, Inc.
    Inventors: Willem Van Marion, Sebastien Mafrica, Tom Ritz