Patents by Inventor Dieter Kienzler

Dieter Kienzler 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).

  • Publication number: 20050162046
    Abstract: A piezoelectric actuator module having at least one piezoelectric component, one actuator foot, and one actuator head is surrounded by an axially extending bush. For sealing the piezoelectric actuator module in the axial direction, the actuator foot is adjoined by a diaphragm, which extends essentially in the radial direction, is joined to the bush, and has a cross section with various radii of curvature.
    Type: Application
    Filed: June 6, 2003
    Publication date: July 28, 2005
    Inventors: Dieter Kienzler, Dietmar Uhlmann, Jean-Luc Loutrage
  • Patent number: 6892706
    Abstract: A common rail fuel injection device for internal combustion engines includes a housing, a high-pressure fuel connection, and a fuel return connection including a plug part for connection to a fuel return line. To make the fuel injection device easier to assemble, the fuel return connection includes a socket part, which is secured in fuelproof fashion in a fuel return opening in the housing and onto which the plug part is placed in fuelproof fashion.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: May 17, 2005
    Assignee: Robert Bosch GmbH
    Inventors: Dieter Kienzler, Kurt Frank, Thomas Kreutzer
  • Patent number: 6871801
    Abstract: An injection nozzle has a nozzle body, a nozzle needle that is supported displaceably in the nozzle body, a control chamber that communicates with a fluid inlet and a fluid outlet, and a valve element that can open and close the fluid outlet. The control chamber is laterally defined by a displaceable ring which rests on the nozzle needle, and a closing spring presses the ring against the nozzle needle in fluid-tight fashion.
    Type: Grant
    Filed: March 9, 2002
    Date of Patent: March 29, 2005
    Assignee: Robert Bosch GmbH
    Inventors: Dieter Kienzler, Patrick Mattes, Wolfgang Stoecklein, Friedrich Boecking
  • Publication number: 20040232259
    Abstract: The invention relates to a A fuel injector for injecting fuel into the combustion chamber of an internal combustion engine includes an injector body in which a nozzle needle is movably received, and a nozzle body, which is connected to the injector body at a threaded connection by means of a nozzle lock nut. Associated with a contact face of components to be braced against the injector body by the nozzle lock nut is a deformable compensation element, which compensates for production-dictated oblique positions of the components.
    Type: Application
    Filed: June 10, 2004
    Publication date: November 25, 2004
    Inventor: Dieter Kienzler
  • Patent number: 6726121
    Abstract: The invention relates to a common rail injector for injecting fuel in a common rail injection system of an internal combustion engine, which system has an injector housing (1) with a fuel inlet (24) that is in communication with a central high-pressure fuel reservoir outside the injector housing (1) and with a pressure chamber (27) inside the injector housing (1), from which fuel subjected to high pressure is injected as a function of the position of a control valve (18) that assures that a nozzle needle (8), which is movable back and forth and received in a longitudinal bore (6) of the injector axially counter to the prestressing force of a nozzle spring (21) that is received in a nozzle spring chamber (20), lifts from a seat when the pressure in the pressure chamber (27) is greater than the pressure in a control chamber (30) that communicates with the fuel inlet (24) via an inlet throttle (19).
    Type: Grant
    Filed: August 20, 2001
    Date of Patent: April 27, 2004
    Assignee: Robert Bosch GmbH
    Inventors: Dieter Kienzler, Patrick Mattes, Wolfgang Stoecklein, Friedrich Boecking
  • Patent number: 6705299
    Abstract: The present invention relates to a leak fuel connection, in particular for a common rail system or a common rail injector, for connecting a leak fuel line via a connecting conduit to a connection end piece. The leak fuel connection, on the outer circumference of a component on which the leak fuel connection is provided, has an at least intermittently annularly embodied conduit, into which the connecting conduit for connecting to the leak fuel line discharges. The annular conduit is connected to the connection end piece via a connection element.
    Type: Grant
    Filed: July 29, 2002
    Date of Patent: March 16, 2004
    Assignee: Robert Bosch GmbH
    Inventors: Dieter Kienzler, Udo Schaich
  • Patent number: 6705551
    Abstract: The invention relates to a common rail fuel injector having an injector housing with a fuel inlet in communication with a central high-pressure fuel reservoir outside the injector housing and with a pressure chamber inside the injector housing. A control valve assures that a nozzle needle lifts from a seat when the pressure in the pressure chamber is greater than the pressure in a control chamber that communicates with the fuel inlet via an inlet throttle. The control chamber is defined by a bush that is displaceable, causing a sealing action, on the end of the nozzle needle remote from the combustion chamber and that is kept in contact against the injector housing with the aid of the nozzle spring.
    Type: Grant
    Filed: September 5, 2001
    Date of Patent: March 16, 2004
    Assignee: Robert Bosch GmbH
    Inventors: Dieter Kienzler, Patrick Mattes, Wolfgang Stoecklein, Friedrich Boecking
  • Publication number: 20040046059
    Abstract: The present invention relates to a valve for controlling fluids, which has a plurality of components (2, 3, 4, 5) that are disposed in succession in the axial direction (X-X) of the valve. On at least one of the components, a male thread (9) is embodied in order to enter into engagement with a female thread of a lock nut (6). The lock nut (6) serves to brace the components of the valve. A sealing element (8, 11, 17) is disposed between the female thread (10) of the lock nut (6) and the male thread (9) of the component (2).
    Type: Application
    Filed: July 9, 2003
    Publication date: March 11, 2004
    Inventors: Dieter Kienzler, Dietmar Uhlmann
  • Publication number: 20040020466
    Abstract: A fuel injection device (10) for internal combustion engines, in particular a common rail injector, includes a housing (12). A high-pressure fuel connection is also provided, as is a fuel return connection (16). The latter includes a plug part (20) for connection to a fuel return line. To make the fuel injection device (10) easier to assemble, it is proposed that the fuel return connection (16) includes a socket part (18), which is secured in fuelproof fashion in a fuel return opening (20) in the housing (12) and onto which the plug part (20) is placed in fuelproof fashion.
    Type: Application
    Filed: November 22, 2002
    Publication date: February 5, 2004
    Inventors: Dieter Kienzler, Kurt Frank, Thomas Kreutzer
  • Publication number: 20030168526
    Abstract: An injection nozzle has a nozzle body (12), a nozzle needle (18) that is supported displaceably in the nozzle body, a control chamber (20) that communicates with a fluid inlet (30) and a fluid outlet (34), and a valve element (40) that can open and close the fluid outlet (34). The control chamber is laterally defined by a displaceable ring (24); the ring rests on the nozzle needle, and a closing spring (28) presses the ring against the nozzle needle in fluid-tight fashion.
    Type: Application
    Filed: April 7, 2003
    Publication date: September 11, 2003
    Inventors: Dieter Kienzler, Patrick Mattes, Wolfgang Stoecklein, Friedrich Boecking
  • Publication number: 20030164405
    Abstract: A piezoelectric actuator module is proposed, which has at least one piezoelectric element (6), one actuator foot (5) and one actuator head (7), and which is surrounded by an axially extending sleeve (9). To seal off the piezoelectric actuator module (2) in the axial direction, the actuator foot (7) is adjoined by a diaphragm (21) that extends essentially in the radial direction and is connected to the sleeve (9) (FIG. 2).
    Type: Application
    Filed: April 18, 2003
    Publication date: September 4, 2003
    Inventors: Dieter Kienzler, Werner Scholten, Dietmar Uhlmann, Jean-Luc Loutrage
  • Publication number: 20030132317
    Abstract: The invention proposes an injection apparatus (1) for fuel, with a system pressure region (14) in which a system pressure prevails and an injection pressure region (11) in which an injection pressure prevails, wherein the injection pressure is greater than the system pressure. The injection pressure region (11) and the system pressure region (14) communicate with each other by means of a throttle device (12, 13). The system pressure in the system pressure region (14) can be controlled by means of a system pressure valve (16). The invention also proposes a method for producing a system pressure in an injection apparatus for fuel.
    Type: Application
    Filed: December 6, 2002
    Publication date: July 17, 2003
    Inventors: Dieter Kienzler, Patrick Mattes, Friedrich Boecking
  • Publication number: 20030019463
    Abstract: The present invention relates to a leak fuel connection, in particular for a common rail system or a common rail injector, for connecting a leak fuel line (2) via a connecting conduit (3) to a connection end piece (4). The leak fuel connection (1), on the outer circumference of a component (18) on which the leak fuel connection (1) is provided, has an at least intermittently annularly embodied conduit (5), into which the connecting conduit (3) for connecting to the leak fuel line (2) discharges. The annular conduit (5) is connected to the connection end piece (4) via a connection element (6).
    Type: Application
    Filed: July 29, 2002
    Publication date: January 30, 2003
    Inventors: Dieter Kienzler, Udo Schaich
  • Publication number: 20020134954
    Abstract: The present invention relates to a valve for controlling fluids, having a piezoelectric actuator and a hydraulic booster (2), which has a first piston (3), a second piston (4), and a pressure chamber (6) disposed between the two pistons. A valve member (6) is connected to the second piston (4) and can be brought into contact with at least a first valve seat (7). To adjust a stroke of the valve member (6), a separate adjusting element (10) is present as an individual component.
    Type: Application
    Filed: April 17, 2002
    Publication date: September 26, 2002
    Inventors: Dieter Kienzler, Stefan Schuerg
  • Patent number: 6448692
    Abstract: A piezoelectric actuator for actuating control valves or injection valves in motor vehicles. The actuator includes an actuator body in the form of a multilayer laminate of stacked layers of piezoelectric material and intervening metallic or electrically conductive layers acting as electrodes. One bottom plate toward the valve and an opposed top plate are mounted on each of the end faces of the actuator body. The piezoelectric actuator is characterized in that the actuator body on each of its end faces has one piezoelectrically inactive cover layer and that the connection faces of the bottom plate and the top plate which adjoin the end faces of the actuator body have fixation elements that grip the cover layers, for at least nonpositive fixation of the cover layers of the actuator body.
    Type: Grant
    Filed: March 6, 2000
    Date of Patent: September 10, 2002
    Assignee: Robert Bosch GmbH
    Inventors: Rudolf Heinz, Dieter Kienzler, Friedrich Boecking
  • Patent number: 6419164
    Abstract: The invention relates to a fuel injection valve that has a valve member which can control a fuel outlet opening. The valve member has a first opening surface, which defines a first opening pressure chamber in the opening direction of the valve member, wherein the first opening pressure chamber is connected to a high-pressure fuel source and the pressure in the first opening pressure chamber produces a first opening force against the first opening surface. The valve member also has a first closing surface, which defines a first closing pressure chamber in the closing direction of the valve member, wherein the first closing pressure chamber is connected to the high-pressure fuel source and the pressure in the first closing pressure chamber produces a first closing force against the first closing surface.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: July 16, 2002
    Assignee: Robert Bosch GmbH
    Inventors: Rudolf Heinz, Dieter Kienzler, Klaus-Peter Schmoll, Friedrich Boecking
  • Patent number: 6290204
    Abstract: A valve for controlling liquids for its actuation is provided with a liquid-filled coupling chamber, which is disposed between a step-up piston, actuatable by a piezoelectric actuator, and a piston that actuates a valve member. To compensate for leakage in the coupling chamber that is at high pressure, a filling valve is provided. The filling valve is disposed between the step-up piston and the piezoelectric actuator. Upon each return stroke of the piezoelectric actuator, the step-up piston follows the piezoelectric actuator with a time lag, so that the filling valve opens briefly and allows filling of the coupling chamber. The valves intended for use in fuel injection systems for internal combustion engines of motor vehicles.
    Type: Grant
    Filed: July 8, 1999
    Date of Patent: September 18, 2001
    Assignee: Robert Bosch GmbH
    Inventors: DIeter Kienzler, Klaus-Peter Schmoll, Friedrich Boecking
  • Patent number: 6172445
    Abstract: A piezoelectric actuator intended for instance for actuating injection valves in internal combustion engines of motor vehicles is protected against destructive tensile strains in that resilient prestressing elements that subject the piezoelectric body to precompression are provided for the piezoelectric body of the actuator.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: January 9, 2001
    Assignee: Robert Bosch GmbH
    Inventors: Rudolf Heinz, Dieter Kienzler, Roger Potschin, Klaus-Peter Schmoll, Friedrich Boecking
  • Patent number: 6168133
    Abstract: A valve for controlling liquids which for its actuation is provided with a liquid-filled coupling chamber, which is disposed between an actuator piston of a piezoelectric actuator and a piston that actuates a valve member. To compensate for liquid losses suffered by the coupling chamber, which is briefly at high in each work cycle, the pressure difference that exists during the return stroke of the actuator piston between the coupling chamber and the opposite sides of the actuator piston and of the that actuates the valve member that are remote from the coupling chamber is utilized to achieve refilling in valveless fashion along gaps. The valve is used for use in fuel injection systems for internal combustion engines of motor vehicles.
    Type: Grant
    Filed: June 2, 1999
    Date of Patent: January 2, 2001
    Assignee: Robert Bosch GmbH
    Inventors: Rudolf Heinz, Dieter Kienzler, Roger Potschin, Klaus-Peter Schmoll, Friedrich Boecking
  • Patent number: 6155532
    Abstract: A valve for controlling fluids, which is provided with a fluid-filled coupling chamber that is disposed between an actuator piston of a piezoelectric actuator and a piston that actuates a valve member. In order to compensate for a leakage in the coupling chamber that is intermittently under high pressure during a switching procedure, a filling valve is provided that is disposed radially on the coupling chamber, but outside the chamber, and this valve monitors an inflow from an inlet conduit that is under ambient pressure in the valve. In this manner, on the one hand, the clearance volume produced by the attachment of the filling valve is very small and on the other hand, the filling valve is independent of the accelerated movements of the pistons, i.e., independent of their acceleration forces. The valve is designated for use in fuel injection devices for internal combustion engines of motor vehicles.
    Type: Grant
    Filed: October 2, 1998
    Date of Patent: December 5, 2000
    Assignee: Robert Bosch GmbH
    Inventors: Rudolf Heinz, Dieter Kienzler, Roger Potschin, Klaus-Peter Schmoll, Friedrich Boecking