Patents by Inventor Andreas Knecht
Andreas Knecht 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: 20110247576Abstract: The invention relates to an oscillating-motor camshaft adjuster having a hydraulic valve, which has two working ports. These two working ports each have a standard opening axially adjacent to one another and an opening for the utilization of pressure peaks as a consequence of camshaft alternating torques. A hydraulic pressure can be guided from a supply port to the working port to be loaded, while the working port to be relieved of pressure is guided to a tank port. In order to also keep the control performance high in the case of internal combustion engines with very greatly fluctuating camshaft alternating torques, it is proposed according to the invention that a position of hydraulic valve can be controlled proportionally, in which the pressure peaks of the working port to be relieved of pressure are blocked relative to the supply port and the working port that is to be loaded.Type: ApplicationFiled: March 29, 2011Publication date: October 13, 2011Applicant: Hydraulik-Ring GmbHInventors: Andreas Knecht, Dirk Pohl
-
Patent number: 7946266Abstract: The invention relates to a valve and suitable hydraulic circuit, especially for camshaft adjusters of an internal combustion engine. The hydraulic circuit comprises a number of check valves or two-way valves operating as check valves, in order to provide a rapid camshaft adjuster with a high regulating quality.Type: GrantFiled: September 15, 2008Date of Patent: May 24, 2011Assignee: Hydraulik-Ring GmbHInventors: Andreas Knecht, Dirk Pohl, Jens Bartzsch, Gordon Neudoerfer
-
Publication number: 20110114047Abstract: The invention relates to a camshaft insert for a camshaft, which can be, in particular, a composite camshaft. In this case, the camshaft insert bears an oscillating motor adjuster. An accumulator that can be loaded by means of a spring force is disposed inside camshaft insert. Alternatively, the accumulator can also be disposed in the camshaft.Type: ApplicationFiled: November 11, 2010Publication date: May 19, 2011Applicant: HYDRAULIK-RING GMBHInventors: Marc Hohmann, Dietmar Schulze, Andreas Knecht, André Selke
-
Patent number: 7895981Abstract: In order to produce a variable valve lift device for the lift adjustment of the gas-exchange valves of an internal combustion engine, by means of which with adjustment forces and holding forces, independently from whether said holding forces and adjustment forces are applied mechanically, hydraulically or electrically, with an adjustment of the valve lift being as cost-effective as possible, and with maximum accuracy of the adjustment or control of the valve lift to be taken between the individual cylinders of a multi-cylinder internal combustion engine, and, moreover, the adjustment possibility of the valve lift of the valves of an internal combustion engine with several cylinders is obtained within smallest tolerances, it is suggested that a valve lift device (1) has a rotatable eccentric shaft (3), which consists of several eccentrics (4, 5) and whereby all possible contours of the eccentrics (4, 5) are positioned within a circle, which is formed by means of the external diameters of a bearing (6, 7) of thType: GrantFiled: March 26, 2004Date of Patent: March 1, 2011Assignees: enTec Consulting GmbH, Hydraulik-Ring GmbHInventors: Gerlinde Bösl-Flierl, Rudolf Flierl, Wilhelm Hannibal, Michael Jubelt, Andreas Knecht, Andreas Wild
-
Patent number: 7841311Abstract: The present invention provides a variable valve timing device for an internal combustion engine having a double camshaft. A gas exchange valve control shaft is provided which has first and second concentrically arranged cam shafts that are adjustable in a rotatable manner with respect to each other, by which a cam of the first cam shaft is adjusted in terms of its angle towards a cam of the second cam shaft. A cam phasing device is provided which operates by rotatable vanes provoking a swivelling relative movement between a driven member and an output member. The cam phasing device comprises at least two pivotable vane adjusters. Each pivotable vane adjuster is assigned to one of the two cam shafts. The pivotable vane adjusters are arranged axially one after the other in a direction of a valve control shaft. Each pivotable vane adjuster may be designed as a rotor-type vane adjuster.Type: GrantFiled: January 4, 2008Date of Patent: November 30, 2010Assignee: Hilite International Inc.Inventors: Jack D. Hutcheson, Andreas Knecht, Dirk Pohl, Glenn A. Barton, Stephen L. Nance, Joe S. Cole
-
Patent number: 7836857Abstract: The invention relates to a valve and suitable hydraulic circuit, especially for camshaft adjusters of an internal combustion engine. The hydraulic circuit comprises a number of check valves or two-way valves operating as check valves, in order to provide a rapid camshaft adjuster with a high regulating quality.Type: GrantFiled: September 15, 2008Date of Patent: November 23, 2010Assignee: Hydraulik-Ring GmbHInventors: Andreas Knecht, Dirk Pohl, Jens Bartzsch, Gordon Neudoerfer
-
Patent number: 7640902Abstract: A camshaft adjuster which operates according to the vane-type motor principle, which means being able to move to and fro within a certain angle, generally comprises a stator and a rotor. The rotor itself is provided as a composite system of at least two components. One of the components is a cover. A further component of the composite system may be denoted as the rotor core. The cover is placed on the rotor.Type: GrantFiled: June 5, 2006Date of Patent: January 5, 2010Assignee: Hydraulik-Ring GmbHInventors: Andreas Knecht, Dirk Pohl, Jan Eimert
-
Publication number: 20090183702Abstract: The present invention provides a cam shaft adjuster, which is designed for controlling a double cam shaft, which has a layered construction. The cam shaft adjuster is equipped with a first rotor-type output body and a second rotor-type output body which are arranged parallel to each other with their rotary vane body parts.Type: ApplicationFiled: January 2, 2009Publication date: July 23, 2009Applicant: Hydraulik-Ring GmbHInventors: Andreas Knecht, Dirk Pohl
-
Publication number: 20090173297Abstract: The present invention provides a variable valve timing device for an internal combustion engine having a double camshaft. A gas exchange valve control shaft is provided which has first and second concentrically arranged cam shafts that are adjustable in a rotatable manner with respect to each other, by which a cam of the first cam shaft is adjusted in terms of its angle towards a cam of the second cam shaft. A cam phasing device is provided which operates by rotatable vanes provoking a swivelling relative movement between a driven member and an output member. The cam phasing device comprises at least two pivotable vane adjusters. Each pivotable vane adjuster is assigned to one of the two cam shafts. The pivotable vane adjusters are arranged axially one after the other in a direction of a valve control shaft. Each pivotable vane adjuster may be designed as a rotor-type vane adjuster.Type: ApplicationFiled: January 4, 2008Publication date: July 9, 2009Applicant: Hilite International Inc.Inventors: Jack D. Hutcheson, Andreas Knecht, Dirk Pohl, Glenn A. Barton, Stephen L. Nance, Joe S. Cole
-
Patent number: 7513230Abstract: A camshaft adjusting system for an internal combustion engine has a camshaft adjusting device with a first hydraulic chamber and a second hydraulic chamber, wherein the first and second hydraulic chambers act in opposition to one another. A control valve group working as a 4/4-way valve system has a first connection to the first hydraulic chamber, a second connection to the second hydraulic chamber, a tank connection, and a connection for pressurization. The camshaft adjusting system in a first state of the control valve group, when starting the internal combustion engine, is pressure-relieved relative to the tank connection by simultaneously hydraulically connecting the first and second connections of the camshaft adjusting device so that the camshaft adjusting device moves into a dwell position with a single locking mechanism. The dwell position also provides a safety function in case of system failure.Type: GrantFiled: June 27, 2005Date of Patent: April 7, 2009Assignee: Hydraulik-Ring GmbHInventors: Andreas Knecht, Helmut Patze, Udo Diederichs, Udo Schwandt
-
Publication number: 20090071140Abstract: The invention relates to a valve and suitable hydraulic circuit, especially for camshaft adjusters of an internal combustion engine. The hydraulic circuit comprises a number of check valves or two-way valves operating as check valves, in order to provide a rapid camshaft adjuster with a high regulating quality.Type: ApplicationFiled: September 15, 2008Publication date: March 19, 2009Applicant: Hydraulik-Ring GmbHInventors: Andreas Knecht, Dirk Pohl, Jens Bartzsch, Gordon Neudoerfer
-
Publication number: 20090071426Abstract: The invention relates to a valve and suitable hydraulic circuit, especially for camshaft adjusters of an internal combustion engine. The hydraulic circuit comprises a number of check valves or two-way valves operating as check valves, in order to provide a rapid camshaft adjuster with a high regulating quality.Type: ApplicationFiled: September 15, 2008Publication date: March 19, 2009Applicant: Hydraulik-Ring GmbHInventors: Andreas Knecht, Dirk Pohl, Jens Bartzsch, Gordon Neudoerfer
-
Patent number: 7497193Abstract: The present invention describes a new rotor and a corresponding method of manufacture for a rotor according to the invention in which a sleeve as a structural component takes over oil guidance functions in addition to locking pin bearing functions, wherein the sleeve can be inserted in a vane of the rotor flush with the surface by means of a press fit.Type: GrantFiled: January 18, 2007Date of Patent: March 3, 2009Assignee: Hydraulik-Ring GmbHInventors: Andreas Knecht, Dirk Pohl, Jan Eimert
-
Patent number: 7484486Abstract: A drive for valve drive operating control systems in motor vehicles, preferably for camshaft adjusters, includes at least one drive wheel and functional parts, such as a cover, a stator, a closing ring, and a sealing ring, as well as at least one rotor. The drive wheel and at least one of the functional parts are produced in a single part from a high-resistant, non-metallic material.Type: GrantFiled: February 8, 2003Date of Patent: February 3, 2009Assignee: Dr. Ing H.C.F. Porsche AktiengesellschaftInventors: Andreas Knecht, Guido Schneider, Gerold Sluka, Wolfgang Stephan
-
Publication number: 20080115751Abstract: A camshaft adjusting system for an internal combustion engine has a camshaft adjusting device with a first hydraulic chamber and a second hydraulic chamber, wherein the first and second hydraulic chambers act in opposition to one another. A control valve group working as a 4/4-way valve system has a first connection to the first hydraulic chamber, a second connection to the second hydraulic chamber, a tank connection, and a connection for pressurization. The camshaft adjusting system in a first state of the control valve group, when starting the internal combustion engine, is pressure-relieved relative to the tank connection by simultaneously hydraulically connecting the first and second connections of the camshaft adjusting device so that the camshaft adjusting device moves into a dwell position with a single locking mechanism. The dwell position also provides a safety function in case of system failure.Type: ApplicationFiled: June 27, 2005Publication date: May 22, 2008Applicant: Hydraulik-Ring GmbHInventors: Andreas Knecht, Helmut Patze, Udo Diederichs, Udo Schwandt
-
Publication number: 20070266971Abstract: In order to produce a variable valve lift device for the lift adjustment of the gas-exchange valves of an internal combustion engine, by means of which with adjustment forces and holding forces, independently from whether said holding forces and adjustment forces are applied mechanically, hydraulically or electrically, with an adjustment of the valve lift being as cost-effective as possible, and with maximum accuracy of the adjustment or control of the valve lift to be taken between the individual cylinders of a multi-cylinder internal combustion engine, and, moreover, the adjustment possibility of the valve lift of the valves of an internal combustion engine with several cylinders is obtained within smallest tolerances, it is suggested that a valve lift device (1) has a rotatable eccentric shaft (3), which consists of several eccentrics (4, 5) and whereby all possible contours of the eccentrics (4, 5) are positioned within a circle, which is formed by means of the external diameters of a bearing (6, 7) of thType: ApplicationFiled: March 26, 2004Publication date: November 22, 2007Applicants: HYDRAULIK-RING GMBH, ENTEC CONSULTING GMBHInventors: Gerlinde Bosl-Flierl, Rudolf Flierl, Wilhelm Hannibal, Michael Jubelt, Andreas Knecht, Andreas Wild
-
Patent number: 7278385Abstract: Camshaft adjusters are provided for changing the position of a camshaft of an internal combustion engine. One such camshaft adjuster has a locking position that, with regard to design, is freely selectable.Type: GrantFiled: March 6, 2006Date of Patent: October 9, 2007Assignee: Hydraulik-Ring GmbHInventors: Andreas Knecht, Gordon Neudoerfer, Ralf Naumann
-
Patent number: 7275476Abstract: An oscillating motor for a camshaft adjusting device has a stator and a rotor mounted so as to be rotatable relative to one another. The stator has an inner wall and radially extending stator vanes connected to the inner wall. The rotor has a base member and radially extending rotor vanes connected to the base member. The rotor vanes have an end face, respectively, resting against the inner wall of the stator. The stator vanes have an end face, respectively, resting against a peripheral wall of the base member. The rotor vanes taper discontinuously from the end face of the rotor vanes, respectively, in a direction toward the base member so that the rotor vanes each have a widened section at the end face, respectively.Type: GrantFiled: July 29, 2003Date of Patent: October 2, 2007Assignee: Hydraulik-Ring GmbHInventors: Ralf Naumann, Gerold Sluka, Frank Heidl, Andreas Knecht
-
Publication number: 20070175426Abstract: The present invention describes a new rotor and a corresponding method of manufacture for a rotor according to the invention in which a sleeve as a structural component takes over oil guidance functions in addition to locking pin bearing functions, wherein the sleeve can be inserted in a vane of the rotor flush with the surface by means of a press fit.Type: ApplicationFiled: January 18, 2007Publication date: August 2, 2007Applicant: Hydraulik-Ring GmbHInventors: Andreas Knecht, Dirk Pohl, Jan Eimert
-
Patent number: 7246580Abstract: A camshaft adjuster for motor vehicles has an oscillating motor having a rotor that is fixedly connected to a camshaft and further having a stator surrounding the rotor. The rotor is rotatable relative to the stator. At least one connecting part acting by at least one of positive engagement and force transmission is provided on a camshaft having cams. The rotor has a base member that is fixedly mounted on the connecting part. The base member has a diameter that is different from a diameter of a circle circumscribing the cams of the camshaft.Type: GrantFiled: April 22, 2004Date of Patent: July 24, 2007Assignee: Hydraulik-Ring GmbHInventors: Edwin Palesch, Axel-Willi Jochim, Andres Nicklass, Andreas Knecht