Patents by Inventor Klaus-Dieter Emmenthal

Klaus-Dieter Emmenthal 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: 4832586
    Abstract: In the embodiment of the invention described in the specification, a drive assembly for an eccentrically driven mass has a drive shaft which drives the mass by a first eccentric device and a secondary shaft, driven synchronously with the drive shaft, which drives a second eccentric device spaced from the first eccentric device so as to guide the mass in a constrained manner. The connection between the second eccentric device and the mass includes a resilient mounting. In order to avoid, or at least reduce, sinusoidally varying stresses imposed on the resilient mounting during operation as a result of deflection of the drive shaft, the eccentricity of the second eccentric device is larger than the eccentricity of the first eccentric device by at least a portion of the magnitude of the maximum deflection of the drive shaft in the region of the mass occurring during operation.
    Type: Grant
    Filed: May 31, 1988
    Date of Patent: May 23, 1989
    Assignee: Volkswagen AG
    Inventors: Klaus-Dieter Emmenthal, Claus Muller, Otto Schaafer
  • Patent number: 4818199
    Abstract: A displacement machine for compressible media, with at least one displacement chamber arranged in a stationary housing and rendered in the manner of a groove extending with a spiral shape, and with a band-shaped or tongue-shaped displacement body associated with each displacement chamber and likewise rendered in spiral shape is described. The displacement body is held on a discoid rotor, which can be driven eccentrically relative to the housing, in such a manner that during operation, each of its outside wall points performs a circular movement bounded by the peripheral walls of the displacement chamber. The curvature of the displacement body relative to the curvature of the displacement chamber is dimensioned such that the displacement body nearly comes in contact with the radially inner and outer peripheral walls of the displacement chamber.
    Type: Grant
    Filed: October 28, 1987
    Date of Patent: April 4, 1989
    Assignee: Volkswagen AG
    Inventors: Klaus-Dieter Emmenthal, Claus Muller, Otto Schafer
  • 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: 4712581
    Abstract: A device for uniform distribution of a two-phase flow containing a liquid and a gaseous component, in particular a fuel-air mixture in a mixture delivery arrangement of an automobile, the device being provided with a flow-in line bore arranged centrally in a housing as well as with a plurality of flow-out line bores extending essentially in a plane perpendicular to the flow-in line and communicating with the flow-in line bore. The flow-in line bore is bounded by the end face of an obturating body which is pressed into a retaining bore arranged coaxially with the flow-in line bore but beyond the plane of the flow-out line bores.
    Type: Grant
    Filed: April 8, 1986
    Date of Patent: December 15, 1987
    Assignee: Volkswagen Aktiengesellschaft
    Inventors: Klaus-Dieter Emmenthal, Joachim Neumann
  • Patent number: 4646706
    Abstract: In the representative system for continuous fuel injection described in the specification, an air pump withdraws air from the air intake line of a gasoline engine and a fuel pump delivers fuel from a fuel tank through a fuel pressure regulator to a metering device which supplies fuel as a function of the operating state of the internal combustion engine, the air withdrawn from the intake line being mixed with the fuel from the metering device. The fuel pressure regulator returns excess fuel to the fuel tank through a return line and, in order provide fast response to sudden load changes, a valve device, which can be adjusted as a function of the variations in the rate of application of the load on the internal combustion engine, is provided in the return line. The valve device is controlled according to changes in the vacuum in the intake line downstream from a butterfly valve.
    Type: Grant
    Filed: May 23, 1984
    Date of Patent: March 3, 1987
    Assignee: Volkswagenwerk Aktiengesellschaft
    Inventor: Klaus-Dieter Emmenthal
  • 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
  • Patent number: 4414944
    Abstract: A fuel injection device for continuously injecting the mixture of fuel and air into the cylinders of an internal combustion engine has an intake pipe, an arbitrarily adjustable throttle flap, and a venturi in the intake pipe at a point upstream of the throttle flap. An air channel branches off from the narrowest point of the venturi and a main fuel metering arrangement supplies fuel to the mixing chamber portion of the channel substantially as a function of the air pressure at the venturi. A suction line is connected to receive the air and fuel from the mixing chamber in the channel and an idling fuel metering arrangement supplies fuel under constant pressure to the line during idling. A fuel delivery pump is connected to receive the air and fuel mixture in the line and to supply the mixture to the points of injection associated with the several cylinders of the engine.
    Type: Grant
    Filed: June 3, 1982
    Date of Patent: November 15, 1983
    Assignee: Volkswagenwerk Aktiengesellschaft
    Inventors: Klaus-Dieter Emmenthal, Otto Schafer, Rudolf-Helmut Strozyk
  • Patent number: 4363308
    Abstract: Apparatus for injecting fuel into the intake pipes of an internal combustion engine. The apparatus has an air channel branching off from the intake line at a point ahead of an adjustable throttle flap; a fuel metering device supplying fuel to the air channel in dependence upon engine load; and a fuel delivery pump arranged to receive a fuel-air mixture from the air channel through a narrowed constriction. The fuel pump passes the fuel-air mixture, with additional air which may be supplied thereto, to a fuel distributor which directs the mixture to the individual intake pipes of the engine.
    Type: Grant
    Filed: May 5, 1980
    Date of Patent: December 14, 1982
    Assignee: Volkswagenwerk Aktiengesellschaft
    Inventors: Klaus-Dieter Emmenthal, Otto Schafer, Rudolf-Helmut Strozyk
  • Patent number: 4322948
    Abstract: An internal combustion engine comprises an exhaust driven turbocharger for generating a maximum boost pressure in the intake manifold, said pressure being so high that knocking may occur, to achieve maximum engine efficiency. A knock sensor detects engine detonation, and in response thereto causes actuation of a valve for temporarily reducing the boost pressure such that the knocking subsides.
    Type: Grant
    Filed: September 28, 1979
    Date of Patent: April 6, 1982
    Assignee: Volkswagenwerk Aktiengesellschaft
    Inventors: Klaus-Dieter Emmenthal, Gunter Hagemann
  • Patent number: 4224915
    Abstract: Apparatus for injecting fuel into the intake pipes of an internal combustion engine. The apparatus has an air channel branching off from the intake line at a point ahead of an adjustable throttle flap; a fuel metering device supplying fuel to the air channel in dependence upon engine load; and a fuel delivery pump arranged to receive a fuel-air mixture from the air channel through a narrowed constriction. The fuel pump passes the fuel-air mixture, with additional air which may be supplied thereto, to a fuel distributor which directs the mixture to the individual intake pipes of the engine.
    Type: Grant
    Filed: September 14, 1978
    Date of Patent: September 30, 1980
    Assignee: Volkswagenwerk Aktiengesellschaft
    Inventors: Klaus-Dieter Emmenthal, Otto Schafer, Rudolf-Helmut Strozyk
  • Patent number: 4182294
    Abstract: Apparatus for injecting fuel into the intake assembly of a multi-cylinder internal combustion engine, the intake assembly including an intake manifold communicating with cylinder intake ports, an intake passage connected to the manifold, and a supercharging compressor in the intake passage. The fuel injection apparatus comprises a distributor for injecting fuel into the manifold adjacent the intake ports, a center injection line for injecting fuel into the intake passage upstream of the compressor, and a controlled valve for supplying fuel primarily to the distributor at lower engine speeds, and for supplying a progressively larger portion of the fuel into the center injection line with increasing engine load.
    Type: Grant
    Filed: August 10, 1978
    Date of Patent: January 8, 1980
    Assignee: Volkswagenwerk Aktiengesellschaft
    Inventor: Klaus-Dieter Emmenthal