Patents by Inventor Detlef Pickert

Detlef Pickert 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).

  • Patent number: 6732572
    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.
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: May 11, 2004
    Assignee: Volkswagen AG
    Inventors: Detlef Pickert, Volker Schumacher, Harald Sölter, Martin Völtz
  • Patent number: 4754740
    Abstract: Apparatus for the continuous injection of fuel into the intake piping of an internal combustion engine comprises an air pump for delivering an air stream portion deviated from the engine intake pipe, a fuel pump for delivering fuel from a source, a metering device controlled in response to operating conditions of the internal combustion engine and receiving fuel delivered by said fuel pump and the air stream portion delivered by said air pump for mixing said fuel and air stream portion and delivering the same to the intake piping of the engine, in which the supply of said air stream portion to the metering device is interrupted during an operating condition of the engine, preferably a coasting condition of operation of the engine. Interruption of the air stream portion may be effected by a shut-off valve in the conduit delivering the air stream portion from the air pump, responsive to a coasting condition of the engie.
    Type: Grant
    Filed: October 27, 1987
    Date of Patent: July 5, 1988
    Assignee: Volkswagenwerk Aktiengesellschaft
    Inventors: Klaus-Dieter Emmenthal, Detlef Pickert, Wolfgang Wehling
  • Patent number: 4557874
    Abstract: In the particular distribution system described in the specification a first housing part has a fuel injection nozzle and an air inlet and the fuel-air mixture passes through a fluid supply line in the first housing part to a disc-shaped distribution chamber formed by a smooth surface on the first housing part and a closely spaced smooth surface on a second housing part which contains symmetrically disposed fluid discharge lines, the smooth surfaces being held in spaced relation by washers. Each discharge line has a bore which receives a hose and a hose-retaining device which urges the hose against the bottom of the bore.
    Type: Grant
    Filed: May 23, 1984
    Date of Patent: December 10, 1985
    Assignee: Volkswagenwerk Aktiengesellschaft
    Inventors: Joachim Neumann, Detlef Pickert, Klaus-Dieter Emmenthal