Patents by Inventor Ulf Dettmering

Ulf Dettmering 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 control apparatus for controlling a high-pressure fuel supply pump configured to supply pressurized fuel to an internal combustion engine
    Patent number: 9273625
    Abstract: The present invention relates to a method and an apparatus for controlling a high-pressure fuel supply pump configured to supply pressurized fuel to an internal combustion engine, with a solenoid-actuated intake valve being configured to be biased into a first direction towards a first stop position of the intake valve by means of a biasing force and being configured to be displaced against the biasing force into a second direction opposite to the first direction towards a second stop position of the intake valve by means of magnetic force and to be kept at the second stop position by means of magnetic force. The method includes applying control current to the solenoid-actuated intake valve for displacing the intake valve into the second direction to the second stop position and for keeping the intake valve at the second stop position during a first time period by means of magnetic force.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: March 1, 2016
    Assignee: Hitachi, Ltd.
    Inventors: Jonathan Borg, Masanori Watanabe, Ulf Dettmering, Kenichiro Tokuo
  • Method and Control Apparatus for Controlling a High-Pressure Fuel Supply Pump Configured to Supply Pressurized Fuel to an Internal Combustion Engine
    Publication number: 20120118271
    Abstract: The present invention relates to a method and an apparatus for controlling a high-pressure fuel supply pump configured to supply pressurized fuel to an internal combustion engine, with a solenoid-actuated intake valve being configured to be biased into a first direction towards a first stop position of the intake valve by means of a biasing force and being configured to be displaced against the biasing force into a second direction opposite to the first direction towards a second stop position of the intake valve by means of magnetic force and to be kept at the second stop position by means of magnetic force. The method includes applying control current to the solenoid-actuated intake valve for displacing the intake valve into the second direction to the second stop position and for keeping the intake valve at the second stop position during a first time period by means of magnetic force.
    Type: Application
    Filed: November 10, 2011
    Publication date: May 17, 2012
    Applicant: Hitachi, Ltd.
    Inventors: Jonathan BORG, Masanori Watanabe, Ulf Dettmering, Kenichiro Tokuo