Patents by Inventor Jurgen Bohm
Jurgen Bohm 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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Patent number: 9399452Abstract: A method and system is provided for controlling an electrohydraulic braking system for a motor vehicle having an antilock braking control function and an electrically controllable pressure generating device having a cylinder-piston arrangement having a hydraulic pressure chamber and a piston displaceable by an electromechanical actuator so that a predetermined pressure can be set in the chamber, and having a number of hydraulically wheel brakes connected to the hydraulic pressure chamber by an electrically actuatable inlet valve and to a pressure medium reservoir via an electrically actuatable outlet valve. The cylinder-piston arrangement is actuated in case of antilock controlling at all wheel brakes for setting an individual wheel target pressure at each wheel brake, such that the pressure in the hydraulic pressure chamber is set to the greatest wheel target pressure.Type: GrantFiled: July 13, 2011Date of Patent: July 26, 2016Assignee: CONTINENTAL TEVES AG & CO. OHGInventors: Georg Roll, Jurgen Bohm, Jens Jager
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Publication number: 20160200299Abstract: A method for regulating motor vehicle electrohydraulic brake systems having a pressure supply apparatus actuated by a control unit and hydraulically connected to wheel brakes via a pressure regulating valve. The pressure supply apparatus includes a cylinder-piston assembly operated by an electromechanical actuator. A set point pressure value is determined for each wheel brake. The cylinder-piston assembly is actuated to a predetermined pilot pressure in the hydraulic pressure chamber. A pilot pressure actual value and an actuator speed actual value are obtained. A pilot pressure set point value, the pilot pressure set point value and the pilot pressure actual value are fed as input variables to a regulator which outputs an actuator speed set point value. The actuator speed and actual set point values are fed as inputs to the speed regulator. The actuator speed set point value is modified as a function of the number of brakes.Type: ApplicationFiled: August 8, 2014Publication date: July 14, 2016Inventors: Jürgen Böhm, Georg Roll, Marco Besier
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Patent number: 9391545Abstract: A method for improving the availability of an electromechanical actuator of an electromechanical or electrohydraulic brake system in a motor vehicle, including electronic motor regulation functioning in a non-restricted operating mode (normal operation) for a field-commutated electric motor actuated by pulse width modulation. An electronic device having a setpoint value interface (1) for presetting setpoint variables and parameters, a module for calculating pulse width modulation switching times (4), a module for dead time compensation (5), a power electronics module (6) for actuating an electric motor (7) actuated on three phases, including a module for setpoint current determination (2) which is electrically connected to the field-oriented current controller (3) and receives, via this connection, setpoint current values (Id_set, Iq_set) calculated using various state and/or estimated variables and stored parameters from the module for setpoint current determination.Type: GrantFiled: August 16, 2012Date of Patent: July 12, 2016Assignee: CONTINENTAL TEVES AG & CO. OHGInventors: Tom Kaufmann, Peter Stauder, Jürgen Böhm
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Publication number: 20160137178Abstract: A method and control system for controlling an electromechanical actuator (1, 2) of a brake system for motor vehicles, in which a measured actual value, of a controlled variable is intended to be set to a specified target value. A first actuator speed target value is determined on the basis of the target value and the actual value by a first controller (19,20), and wherein a manipulated variable for the electromechanical actuator (I, 2) is determined on the basis of the first actuator speed target value and a second actuator speed target value. The second actuator speed target value is determined on the basis of the target value and a specified relationship (30, 40) between the controlled variable and a variable corresponding to a position of the electromechanical actuator.Type: ApplicationFiled: May 13, 2014Publication date: May 19, 2016Applicant: Continental Teves AG & Co. OHGInventor: Jürgen Böhm
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Publication number: 20160039398Abstract: An electrohydraulic brake system method for motor vehicles having a wheel-specific brake control function (ABS, ESC, TCS) and hydraulically actuable wheel brakes (43, 44, 45, 46), communicating with an electrically controllable pressure supply device. The pressure supply device (40) having a cylinder-based piston arrangement with a pressure space driven by an electromechanical actuator (2, 4). To set a brake system pressure (Psys) wherein a wheel-specific wheel setpoint pressure (Pi) is predefined for each wheel brake, and a pressure regulating process (301) is carried out, wherein at certain times a control process (303) of the pressure medium volume which is output by the pressure supply device is carried out instead of the pressure regulating process (301) of the brake system pressure, switching over (302) from the pressure regulating process to the control of the pressure medium volume is carried out as a function of the wheel setpoint pressures (Pi).Type: ApplicationFiled: March 4, 2014Publication date: February 11, 2016Inventors: Georg Roll, Jürgen Böhm, Marco Besier
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Publication number: 20150375726Abstract: A method for operating a motor vehicle brake system, the brake system including an electrically controllable pressure-providing device, including a cylinder/piston assembly having a hydraulic pressure chamber and a piston that can be moved by an electromechanical actuator, a number of hydraulic wheel brakes associated with two axles of the vehicle can be supplied with braking pressure via the hydraulic pressure chamber, and a sensor for detecting the driver braking request. An electric drive having at least one electrical machine, which can also be operated as a generator, is associated with at least one axle of the vehicle, and, during regeneration braking, in which a generator deceleration is built up by the electric drive, the cylinder-piston assembly is controlled such that the pressure in the hydraulic pressure chamber is adjusted in accordance with the difference between the requested braking deceleration and the generator deceleration built up by the electric drive.Type: ApplicationFiled: February 25, 2014Publication date: December 31, 2015Inventors: Georg Roll, Jürgen Böhm, Marco Besier
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Publication number: 20150316371Abstract: A method for determining the absolute position of a linear actuator is described. In the process, the rotational angle position of the rotor of the corresponding electric motor of the linear actuator is determined by a first sensor. In addition, the rotary angle position of a transmitter wheel of a second sensor coupled to the rotor is determined by means of a special transmission ratio. The absolute position of the linear actuator is derived from the differential value of the determined rotary angle positions. The method can be implemented in a simple and inexpensive manner.Type: ApplicationFiled: November 28, 2012Publication date: November 5, 2015Inventors: Jürgen Böhm, Marco Besier, Tom Kaufmann, Peter Stauder, Andreas Schirling
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Publication number: 20150239438Abstract: A method for controlling a braking system for motor vehicles having a hydraulically actuatable wheel brake which can be actuated by an electronically controllable pressure supply device having a cylinderpiston arrangement with a hydraulic pressure chamber, the piston of which can be displaced by an electromechanical actuator such that a pre-defined desired pressure value can be adjusted, a position of the pressure supply device being detected, and an actual pressure (Pv, act) of the pressure supply device being determined by a measurement device.Type: ApplicationFiled: September 9, 2013Publication date: August 27, 2015Inventor: Jürgen Böhm
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Patent number: 9108604Abstract: A system and method for operating a brake system for motor vehicles, includes a master brake cylinder actuated by a brake pedal and separably connected to at least one hydraulically acutuatable wheel brake by at least one brake circuit, a hydraulically operable pedal travel simulator is connectable to the master brake cylinder, an electrically controllable pressure provision apparatus is separably connected to the brake circuit, and an electronic open-loop and closed-loop control unit. Upon brake pedal actuation, a pressure of the pressure provision apparatus is applied to the brake circuit in a first operating mode and the pressure of the master brake cylinder is applied to the brake circuit in a second operating mode. In the event of transition from the second operating mode to the first operating mode while the brake pedal is actuated, the actuation travel of the brake pedal is adjusted by electronic open-loop or closed-loop control.Type: GrantFiled: January 25, 2013Date of Patent: August 18, 2015Assignee: Continental Teves AG & Co. oHGInventors: Jürgen Böhm, Johann Jungbecker, Stefan Drumm, Marco Besier, Harald Biller, Zlatko Penzar, Jochen Führer, Steffen Linkenbach
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Publication number: 20150162856Abstract: A method for improving the availability of an electromechanical actuator of an electromechanical or electrohydraulic brake system in a motor vehicle, including electronic motor regulation functioning in a non-restricted operating mode (normal operation) for a field-commutated electric motor actuated by pulse width modulation. An electronic device having a setpoint value interface (1) for presetting setpoint variables and parameters, a module for calculating pulse width modulation switching times (4), a module for dead time compensation (5), a power electronics module (6) for actuating an electric motor (7) actuated on three phases, including a module for setpoint current determination (2) which is electrically connected to the field-oriented current controller (3) and receives, via this connection, setpoint current values (Id_set, Iq_set) calculated using various state and/or estimated variables and stored parameters from the module for setpoint current determination.Type: ApplicationFiled: August 16, 2012Publication date: June 11, 2015Inventors: Tom Kaufmann, Peter Stauder, Jürgen Böhm
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Publication number: 20150061854Abstract: The invention relates to a method for providing haptic information to the driver of a motor vehicle, equipped with a brake-by-wire brake system, about the operating state of the brake system, in which method the brake pedal characteristic is generated by a pedal travel simulator, in the form of a functional relationship between the brake pedal opposing force and the brake pedal travel, and is modified as a function of an operating state. In order to provide the driver with the haptic information channel via which electronically controlled information can be communicated to the driver during braking, without the impression of a defect arising, the invention proposes that a basic brake pedal characteristic is generated by a passive simulator spring which assigns pedal travel, on which pedal return travel transporting the haptic information is superimposed, to a given pedal force in an unchanging, constant relationship.Type: ApplicationFiled: March 20, 2013Publication date: March 5, 2015Applicant: Continental Teves AG & Co. OHGInventors: Stefan Drumm, Steffen Linkenbach, Marco Besier, Jürgen Böhm, Georg Roll
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Publication number: 20140368027Abstract: A system and method for operating a brake system for motor vehicles, includes a master brake cylinder actuated by a brake pedal and separably connected to at least one hydraulically acutuatable wheel brake by at least one brake circuit, a hydraulically operable pedal travel simulator is connectable to the master brake cylinder, an electrically controllable pressure provision apparatus is separably connected to the brake circuit, and an electronic open-loop and closed-loop control unit. Upon brake pedal actuation, a pressure of the pressure provision apparatus is applied to the brake circuit in a first operating mode and the pressure of the master brake cylinder is applied to the brake circuit in a second operating mode. In the event of transition from the second operating mode to the first operating mode while the brake pedal is actuated, the actuation travel of the brake pedal is adjusted by electronic open-loop or closed-loop control.Type: ApplicationFiled: January 25, 2013Publication date: December 18, 2014Inventors: Jürgen Böhm, Johann Jungbecker, Stefan Drumm, Marco Besier, Harald Biller, Zlatko Penzar, Jochen Führer, Steffen Linkenbach
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Publication number: 20140303865Abstract: The invention relates to a method for operating a brake system, in particular for motor vehicles, having an electrically controllable pressure supplying device for hydraulically actuating at least one wheel brake. The pressure supplying device includes a cylinder-piston arrangement with a hydraulic pressure chamber. The piston of the cylinder-piston arrangement being movable by an electromechanical actuator in order to generate a specificable target pressure in the hydraulic pressure chamber. An actuator torque and an actuator position of the electromechanical actuator are ascertained, and a pressure value for the pressure in the hydraulic pressure chamber is determined using the actuator toque and the actuator position taking into consideration a pressure model.Type: ApplicationFiled: April 16, 2012Publication date: October 9, 2014Applicant: Continental Teves AG & Co. oHGInventor: Jürgen Böhm
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Patent number: 8849536Abstract: A system and device and a method for controlling an electrohydraulic brake system of a motor vehicle especially adapted for brake by wire applications. The embodiments carryout position control of an actuator of an electronically activatable pressure supply unit based on the actuator position actual value and on and actuator position reference value which is determined on the basis of a pressure reference value.Type: GrantFiled: January 20, 2012Date of Patent: September 30, 2014Assignee: Continental Teves AG & Co. OHGInventors: Jürgen Böhm, Tom Kaufmann
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Patent number: 8788172Abstract: A method for controlling an electro-hydraulic braking system for motor vehicles, including providing an antilock control function, and a further brake pressure control function which can be activated in a “brake-by-wire” mode. A pressurization device, activated by an electronic control unit can be connected to hydraulically actuated wheel brakes through at least one pressure regulating valve. The pressurization device having a cylinder-piston arrangement with a chamber, the piston of which can be displaced relative to a rest position by an electromechanical actuator. A set pressure value is determined for each wheel brake activating the cylinder-piston arrangement such that a predetermined pre-pressure, which is determined from the set pressure values, is set in the chamber by displacement of the piston.Type: GrantFiled: May 31, 2011Date of Patent: July 22, 2014Assignee: Continental Teves AG & Co. OHGInventors: Jurgen Böhm, Georg Roll
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Publication number: 20130304345Abstract: A system and device and a method for controlling an electrohydraulic brake system of a motor vehicle especially adapted for brake by wire applications. The embodiments carryout position control of an actuator of an electronically activatable pressure supply unit based on the actuator position actual value and on and actuator position reference value which is determined on the basis of a pressure reference value.Type: ApplicationFiled: January 20, 2012Publication date: November 14, 2013Applicant: Continental Teves AG & Co. OHGInventors: Jürgen Böhm, Tom Kaufmann
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Patent number: 8494718Abstract: A steering device for adjusting a wheel steering angle of a wheel of a motor vehicle is disclosed, which steering device has a wheel guide member and a steering control unit. The steering control unit includes a basic steering function and an actuator travel control system for adjusting travel of the wheel guide member on the basis of a steering angle setpoint value.Type: GrantFiled: June 4, 2008Date of Patent: July 23, 2013Assignee: Continental Teves AG & Co. oHGInventors: Norman Muth, Steffen Linkenbach, Jürgen Böhm, Tom Kaufmann
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Publication number: 20130119752Abstract: A method and system for controlling an electrohydraulic braking system for a motor vehicle having an antilock braking control function and an electrically controllable pressure generating device having a cylinder-piston arrangement having a hydraulic pressure chamber and a piston displaceable by an electromechanical actuator so that a predetermined pressure can be set in the chamber, and having a number of hydraulically wheel brakes connected to the hydraulic pressure chamber by an electrically actuatable inlet valve and to a pressure medium reservoir by means of an electrically actuatable outlet valve. The cylinder-piston arrangement is actuated in case of antilock controlling at all wheel brake for setting an individual wheel target pressure at each wheel brake, such that the pressure in the hydraulic pressure chamber is set to the greatest wheel target pressure.Type: ApplicationFiled: July 13, 2011Publication date: May 16, 2013Applicant: Continental Teve AG & Co. oHGInventors: Georg Roll, Jurgen Bohm, Jens Jager
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Patent number: 8421385Abstract: Disclosed is a method for braking or stopping an electromotor which can be operated with direct current, such as a brushless direct current motor. If there is an error in the electromotor or in the electronic or mechanical units connected to the electromotor, the presence of definite error states is verified, and the electromotor is braked, by carrying out, taking into consideration a maximum loading capacity of an electronic control unit which is connected to the electromotor, at least temporarily, a control of the electromotor which is adapted to the detected, definite error state.Type: GrantFiled: December 22, 2004Date of Patent: April 16, 2013Assignee: Continental Teves AG & Co., OHGInventors: Jürgen Böhm, Peter Stauder, Marc Menzel, Tom Kaufmann
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Publication number: 20130080017Abstract: A method for controlling a motor vehicle electrohydraulic braking system. The method being activatable in a “brake-by-wire” operating mode, having a pressure supply device (2), which can be activated by an electronic control and a regulation unit, can be connected to a hydraulically actuatable wheel brake. Wherein the pressure supply device (2) is formed by a cylinder-piston assembly (43). The piston (45) can be actuated by an electromechanical actuator (44), the control unit carries out the steps of determining a pressure target value (PV,Soll) for the pressure supply device (2), performing a pressure control operation or an actuator position control operation on the pressure supply device (2) in accordance with the magnitude of the pressure target value (PV,Soll).Type: ApplicationFiled: June 7, 2011Publication date: March 28, 2013Applicant: Continental Teve AG & Co. oHGInventor: Jurgen Bohm