Patents by Inventor Holger Kollmann
Holger Kollmann 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).
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Publication number: 20240174210Abstract: A brake system for a motor vehicle includes hydraulic output ports for activatable wheel brakes. The system includes an electrically actuatable hydraulic pressure source The system also includes a pressure medium reservoir under atmospheric pressure. An electrically activatable inlet valve is connected between each output port and the pressure source. An electrically activatable outlet valve is connected between each outlet port and the pressure medium reservoir Each of the inlet valves is embodied as a 2/2-way valve and in such a manner that the inlet valve can be closed in relation to pressure differences from both directions and can be opened in relation to pressure differences from both directions.Type: ApplicationFiled: June 23, 2022Publication date: May 30, 2024Applicant: Continental Automotive Technologies GmbHInventors: Marc Lenz, Holger Kollmann, Christian Courth
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Patent number: 11913568Abstract: A method for determining a switching state of a valve that is actuated by a coil, wherein the method includes: respectively ascertaining a current flowing through the coil and a voltage applied to the coil at several times which follow one another with a prespecified time interval, calculating an inductance variable of the coil based on the currents, the voltage and the time interval, and determining the switching state based on the inductance variable. Also disclosed is a solenoid valve assembly.Type: GrantFiled: October 9, 2019Date of Patent: February 27, 2024Assignee: Continental Teves AG & Co. oHGInventors: Bartosz Maj, Holger Kollmann, Tomislav Milic, Alexander Schönbohm, Ralf Schröder, Marc Lenz, Marcus Bletz, Jurij Schmidt, Dieter Dinkel
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Publication number: 20230415723Abstract: A brake system for a motor vehicle comprises a hydraulic line system with at least one normally closed hydraulic valve, wherein a final stage is provided for electrically actuating the at least one hydraulic valve. To minimize noise emissions, the final stage is a final stage with analog control and a computing unit is provided which is configured to determine a valve current based on a pressure difference across the hydraulic valve and to actuate the final stage to make the valve current available at the hydraulic valve.Type: ApplicationFiled: October 21, 2021Publication date: December 28, 2023Applicant: Continental Automotive Technologies GmbHInventors: Anne Seidel, Holger Kollmann, Christian Courth
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Patent number: 11648924Abstract: A brake system, including four hydraulically actuatable wheel brakes. Each wheel brake is assigned in each case one outlet valve which is closed when electrically deenergized. Each wheel brake is assigned in each case one inlet valve which is open when electrically deenergized. The brake system furthermore includes a simulator which is actuatable by a brake pedal, wherein two pressure provision devices are provided for actively building up pressure in the wheel brakes, two brake circuits are hydraulically formed, wherein, in each brake circuit, in each case one pressure provision device is hydraulically connected to two wheel brakes, and wherein two separate on-board electrical systems are provided, and wherein each pressure provision device is fed in each case by one of the two on-board electrical systems.Type: GrantFiled: November 24, 2017Date of Patent: May 16, 2023Assignee: CONTINENTAL TEVES AG & CO. OHGInventors: Bartosz Maj, Holger Kollmann, Tomislav Milic, Alexander Schönbohm, Ralf Schröder, Marc Lenz, Marcus Bletz, Jurij Schmidt, Dieter Dinkel
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Publication number: 20220373096Abstract: A solenoid valve has a valve plunger which is guided in a passage bore of a valve housing. The valve plunger with its valve closing element is held in a basic position by a restoring spring. The basic position opens up a valve passage in a valve seat. The valve plunger is arranged between an inlet and an outlet channel in the valve housing. A magnet armature provides actuation of the valve plunger. An inlet chamber is connected to the inlet channel between the passage bore and the valve seat. The valve plunger protrudes into the inlet chamber by way of a step section. As a result of being hydraulically impinged on by the pressure medium of the inlet channel an axial force is generated on the valve plunger that acts oppositely to the closing direction of the valve plunger.Type: ApplicationFiled: September 28, 2020Publication date: November 24, 2022Applicant: Continental Teves AG & Co. OHGInventors: Marc Lenz, Daniel Cvetanovic, Christian Courth, Heiko Gensert, Holger Kollmann
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Patent number: 11458942Abstract: An electromagnetic valve whose inlet and outlet ducts are oriented transversely with respect to the valve holding bore in the valve carrier, wherein the outlet duct opens out, at a distance from the discharge of the filter element, in a portion of the valve holding bore in which the filter element has a closed sleeve portion, in order to achieve a noise reduction through targeted diversion of the flow in the direction of the outlet duct.Type: GrantFiled: September 5, 2017Date of Patent: October 4, 2022Inventors: Christian Schulz, Marc Lenz, Holger Kollmann, Christian Courth
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Publication number: 20210388921Abstract: A method for determining a switching state of a valve that is actuated by a coil, wherein the method includes: respectively ascertaining a current flowing through the coil and a voltage applied to the coil at several times which follow one another with a prespecified time interval, calculating an inductance variable of the coil based on the currents, the voltage and the time interval, and determining the switching state based on the inductance variable. Also disclosed is a solenoid valve assembly.Type: ApplicationFiled: October 9, 2019Publication date: December 16, 2021Inventors: Bartosz Maj, Holger Kollmann, Tomislav Milic, Alexander Schönbohm, Ralf Schröder, Marc Lenz, Marcus Bletz, Jurij Schmidt, Dieter Dinkel
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Patent number: 10738907Abstract: An electromagnetic valve, having a valve closing element which is arranged in a valve housing and which is capable of opening or closing a valve passage in a valve seat, having a magnet armature provided for actuating the valve closing element, and having a substantially cylindrical restoring spring which is braced between the magnet armature and a magnet core. In a parallel arrangement with respect to the restoring spring, a spring ring is arranged between the magnet armature and the magnet core, which spring ring has a smaller number of spring windings in relation to the number of spring windings of the restoring spring.Type: GrantFiled: February 23, 2017Date of Patent: August 11, 2020Assignee: Continental Teves AG & Co., oHGInventors: Christian Courth, Christoph Voss, Holger Kollmann, Christian Schulz, Heiko Gensert
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Publication number: 20200079340Abstract: An electromagnetic valve, having a valve closing element which is arranged in a valve housing and which is capable of opening or closing a valve passage in a valve seat, having a magnet armature provided for actuating the valve closing element, and having a substantially cylindrical restoring spring which is braced between the magnet armature and a magnet core. In a parallel arrangement with respect to the restoring spring, a spring ring is arranged between the magnet armature and the magnet core, which spring ring has a smaller number of spring windings in relation to the number of spring windings of the restoring spring.Type: ApplicationFiled: February 23, 2017Publication date: March 12, 2020Inventors: Christian Courth, Christoph Voss, Holger Kollmann, Christian Schulz, Heiko Gensert
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Publication number: 20190308601Abstract: A brake system, including four hydraulically actuatable wheel brakes. Each wheel brake is assigned in each case one outlet valve which is closed when electrically deenergized. Each wheel brake is assigned in each case one inlet valve which is open when electrically deenergized. The brake system furthermore includes a simulator which is actuatable by a brake pedal, wherein two pressure provision devices are provided for actively building up pressure in the wheel brakes, two brake circuits are hydraulically formed, wherein, in each brake circuit, in each case one pressure provision device is hydraulically connected to two wheel brakes, and wherein two separate on-board electrical systems are provided, and wherein each pressure provision device is fed in each case by one of the two on-board electrical systems.Type: ApplicationFiled: November 24, 2017Publication date: October 10, 2019Inventors: Bartosz Maj, Holger Kollmann, Tomislav Milic, Alexander Schönbohm, Ralf Schröder, Marc Lenz, Marcus Bletz, Jurij Schmidt, Dieter Dinkel
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Patent number: 10421443Abstract: A solenoid valve comprises a valve closing body, which can open or close a valve passage formed in a valve seat body which is pressed into a valve housing, and comprising a magnet armature acted upon by a restoring spring, arranged in a through-bore of the valve housing. In addition to a press-fit segment, the valve seat body has a clearance-fit segment along the outer jacket of the valve seat body. The clearance-fit segment has a reduced outside diameter in relation to the press-fit segment. The valve housing also has a tube segment, which deflects radially inward and which has a constant inside diameter that is reduced relative to the outside diameter of the press-fit segment. The tube segment thus deflecting into the clearance-fit segment of the valve seat body because of the elasticity of the tube segment.Type: GrantFiled: June 9, 2017Date of Patent: September 24, 2019Assignee: Continental Teves AG & Co. oHGInventors: Holger Kollmann, Sigismund Jones, Christian Schulz, Christian Courth, André Schröder
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Publication number: 20190256067Abstract: An electromagnetic valve whose inlet and outlet ducts are oriented transversely with respect to the valve holding bore in the valve carrier, wherein the outlet duct opens out, at a distance from the discharge of the filter element, in a portion of the valve holding bore in which the filter element has a closed sleeve portion, in order to achieve a noise reduction through targeted diversion of the flow in the direction of the outlet duct.Type: ApplicationFiled: September 5, 2017Publication date: August 22, 2019Inventors: Christian Schulz, Marc Lenz, Holger Kollmann, Christian Courth
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Publication number: 20180056954Abstract: A solenoid valve comprises a valve closing body, which can open or close a valve passage formed in a valve seat body which is pressed into a valve housing, and comprising a magnet armature acted upon by a restoring spring, arranged in a through-bore of the valve housing. In addition to a press-fit segment, the valve seat body has a clearance-fit segment along the outer jacket of the valve seat body. The clearance-fit segment has a reduced outside diameter in relation to the press-fit segment. The valve housing also has a tube segment, which deflects radially inward and which has a constant inside diameter that is reduced relative to the outside diameter of the press-fit segment. The tube segment thus deflecting into the clearance-fit segment of the valve seat body because of the elasticity of the tube segment.Type: ApplicationFiled: June 9, 2017Publication date: March 1, 2018Applicant: Continental Teves AG & Co. oHGInventors: Holger Kollmann, Sigismund Jones, Christian Schulz, Christian Courth, André Schröder
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Patent number: 9545901Abstract: In a method for optimizing the pressure setting accuracy, a hydraulic pressure is built up according to a pressure requirement of a hydraulic pump, and overflow control is performed using an analog-controlling hydraulic valve and a known control characteristic curve of the analog-controlling hydraulic valve, which overflow control counteracts a pressure build-up produced by the hydraulic pump that exceeds the pressure requirement. In addition to the known control characteristic curve of the analog-controlling hydraulic valve, at least one additional valve characteristic is taken into account for the overflow control.Type: GrantFiled: July 31, 2012Date of Patent: January 17, 2017Assignee: Continental Teves AG & Co. oHGInventors: Holger Kollmann, Peter Leska, Ralph Gronau, Michel Wagner, Jörg Berntheusel, Erik Händler, Silvio Färber, Patrik Henke, Alexander Treib, Andreas Neu
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Publication number: 20150321653Abstract: A switchover method for a solenoid valve, operated in analogized form, in an electrohydraulic brake system, in which method the solenoid valve can assume a closed position, an open position and a multiplicity of intermediate positions in accordance with electrical actuation or regulation, and wherein the actuation or regulation is performed as a function of a known current-pressure characteristic curve of the solenoid valve. Upon a switchover of the solenoid valve, a pressure-dependent and/or current-dependent magnetic hysteresis characteristic of the solenoid valve is compensated directly without prior modification of the present hysteresis characteristic. An electrohydraulic brake system and the use of the brake system is also disclosed.Type: ApplicationFiled: August 27, 2013Publication date: November 12, 2015Inventors: Andreas Neu, Ralph Gronau, Holger Kollmann, Jörg Berntheusel, Tobias Franke
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Publication number: 20140345988Abstract: In a method for optimizing the pressure setting accuracy, a hydraulic pressure is built up according to a pressure requirement of a hydraulic pump, and overflow control is performed using an analog-controlling hydraulic valve and a known control characteristic curve of the analog-controlling hydraulic valve, which overflow control counteracts a pressure build-up produced by the hydraulic pump that exceeds the pressure requirement. In addition to the known control characteristic curve of the analog-controlling hydraulic valve, at least one additional valve characteristic is taken into account for the overflow control.Type: ApplicationFiled: July 31, 2012Publication date: November 27, 2014Applicant: CONTINENTAL TEVES AG & CT. OHGInventors: Peter Leska, Holger Kollmann, Ralph Gronau, Michel Wagner, Jörg Berntheusel, Erik Händler, Silvio Färber, Patrik Henke, Alexander Treib, Andreas Neu
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Patent number: 8577506Abstract: A control valve conditioning method in an electrohydraulic pressure control unit comprising at least one electrically triggered solenoid valve that is controlled in an analog manner. The solenoid valve is operated at a specific operating current according to a functional correlation or characteristic diagram between the valve current and the differential pressure characteristic curve when the pressure is controlled, said functional correlation or characteristic diagram being stored in the pressure control unit. The method comprises the following steps: a) temporarily applying at least one anti-hysteresis pulse to the solenoid valve during which a current is set far below or far above the operating current in the valve; b) applying the anti-hysteresis pulse at the desired operating current before or during controlled operation, and c) applying the anti-hysteresis pulse wherein the duration is limited in such a way that the anti-hysteresis pulse has largely no influence on the brake pressure.Type: GrantFiled: January 8, 2009Date of Patent: November 5, 2013Assignee: Continental Teves AG & Co. oHGInventors: Andreas Neu, Ralph Gronau, Holger Kollmann, Peter Leska, Jörg Berntheusel, Tobias Franke, Michel Wagner, Jusuf Muratoski, Artur Kost, Dieter Burkhard
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Patent number: 8505873Abstract: A pressure regulating valve having a compression spring fixed in a valve housing for positioning a valve plunger connected to a magnetic armature in the position above a valve seat and not electromagnetically excited, in order to create a connection between at least two pressure medium channels opening into the valve housing, and having a further compression spring disposed coaxially to the first compression spring in the valve housing, having the characteristic that the first compression spring is designed as a control spring forming a stroke and force-specific spring drive by adjusting the spring rates of both compression springs to the force/distance curve of an electromagnet by varying the current in an exciter coil, wherein the further compression spring is designed as a variably adjustable spring acting opposite to the control spring.Type: GrantFiled: November 5, 2008Date of Patent: August 13, 2013Assignee: Continental Teves AG & Co. oHGInventors: Christian Courth, Christoph Voss, Harald Biller, Joachim Bohn, Holger Kollmann, José Garcia-Quilon
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Publication number: 20100332038Abstract: A control valve conditioning method in an electrohydraulic pressure control unit comprising at least one electrically triggered solenoid valve that is controlled in an analog manner. The solenoid valve is operated at a specific operating current according to a functional correlation or characteristic diagram between the valve current and the differential pressure characteristic curve when the pressure is controlled, said functional correlation or characteristic diagram being stored in the pressure control unit. The method comprises the following steps: a) temporarily applying at least one anti-hysteresis pulse to the solenoid valve during which a current is set far below or far above the operating current in the valve; b) applying the anti-hysteresis pulse at the desired operating current before or during controlled operation, and c) applying the anti-hysteresis pulse wherein the duration is limited in such a way that the anti-hysteresis pulse has largely no influence on the brake pressure.Type: ApplicationFiled: January 8, 2009Publication date: December 30, 2010Applicant: Continental Teves AG & Co., oHGInventors: Andreas Neu, Ralph Gronau, Holger Kollmann, Peter Leska, Jörg Berntheusel, Tobias Franke, Michel Wagner, Jusuf Muratoski, Artur Kost, Dieter Burkhard
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Publication number: 20100252763Abstract: A pressure regulating valve having a compression spring fixed in a valve housing for positioning a valve plunger connected to a magnetic armature in the position above a valve seat and not electromagnetically excited, in order to create a connection between at least two pressure medium channels opening into the valve housing, and having a further compression spring disposed coaxially to the first compression spring in the valve housing, having the characteristic that the first compression spring is designed as a control spring forming a stroke and force-specific spring drive by adjusting the spring rates of both compression springs to the force/distance curve of an electromagnet by varying the current in an exciter coil, wherein the further compression spring is designed as a variably adjustable spring acting opposite to the control spring.Type: ApplicationFiled: November 5, 2008Publication date: October 7, 2010Applicant: CONTINENTAL TEVES AG & CO., OHGInventors: Christian Courth, Christoph Voss, Harald Biller, Joachim Bohn, Holger Kollmann, José GarciaQuilon