Patents by Inventor Christian Bald

Christian Bald 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 for detecting a deviation of a compression pressure of one cylinder from that of another cylinder of an internal combustion engine
    Patent number: 9709462
    Abstract: In a method for detecting a deviation of a compression pressure of one cylinder from that of another cylinder of an internal combustion engine having at least two cylinders, the rotational speed of a crankshaft of the internal combustion engine is reduced from a starting rotational speed to a target rotational speed; the actual rotational speed is detected; a curve of a change of the actual rotational speed per angle unit of the crankshaft is determined as a curve of a rotational speed gradient; the curve of the rotational speed gradient is subjected to order analysis; and a deviation of the compression pressure of one cylinder from that of another cylinder is detected when an amplitude of a selected order lies above a permissible threshold value.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: July 18, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Christian Bald, Andrea Matteucci
  • METHOD FOR DETECTING A DEVIATION OF A COMPRESSION PRESSURE OF ONE CYLINDER FROM THAT OF ANOTHER CYLINDER OF AN INTERNAL COMBUSTION ENGINE
    Publication number: 20150128688
    Abstract: In a method for detecting a deviation of a compression pressure of one cylinder from that of another cylinder of an internal combustion engine having at least two cylinders, the rotational speed of a crankshaft of the internal combustion engine is reduced from a starting rotational speed to a target rotational speed; the actual rotational speed is detected; a curve of a change of the actual rotational speed per angle unit of the crankshaft is determined as a curve of a rotational speed gradient; the curve of the rotational speed gradient is subjected to order analysis; and a deviation of the compression pressure of one cylinder from that of another cylinder is detected when an amplitude of a selected order lies above a permissible threshold value.
    Type: Application
    Filed: November 7, 2014
    Publication date: May 14, 2015
    Inventors: Christian Bald, Andrea Matteucci