Patents by Inventor Stefan Stolzl

Stefan Stolzl 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: 20150014098
    Abstract: A method and control device for monitoring travel movements of an elevator car utilize an electronic control device positioned at the car. Travel movements of the elevator car are travels, speeds or accelerations of the car. At least individual travel movements are subject to redundant detection for the purpose of monitoring. Either the travels or the speeds are redundantly detected and the accelerations singularly detected, or alternatively the accelerations are redundantly detected and the travels or the speeds are singularly detected, or preferably the travels or the speeds and the accelerations are redundantly detected. The electronic control device is preferably arranged at the support rollers of the elevator car.
    Type: Application
    Filed: January 24, 2013
    Publication date: January 15, 2015
    Applicant: Inventio AG
    Inventors: Stefan Stölzl, Thomas Schmidt, Michael Degen, Dominik Düchs, Frank Schreiner, Erich Bütler, Michael Geisshüsler, Nicolas Gremaud
  • Patent number: 8645025
    Abstract: A system and method for stabilizing a motor vehicle. The system includes a speed sensor for sensing a longitudinal speed and a transversal speed of the motor vehicle. The system also includes a calculation unit designed to calculate an attitude angle of the motor vehicle from the longitudinal speed and the transversal speed. The system also includes an evaluation unit designed to compare the attitude angle with a threshold value and to detect an oversteering situation if the attitude angle exceeds the threshold value. The system also includes an actuation unit which influences the driving behavior of the motor vehicle. The actuation unit is designed to actuate an actuator in an oversteering situation.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: February 4, 2014
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Stephan Groitzsch, Hans Christian Enders, Otmar Schreiner, Frank Steinmeier, Daniel Fischer, Stefan Stölzl
  • Patent number: 8442737
    Abstract: A method for operating a vehicle braking system for motor vehicles including a hybrid or electric drive and hydraulically actutable wheel brakes on the front axle, wherein the wheels associated with the rear axle are driven at least partially by an electric motor that can be operated as a generator to recover braking energy and, in generator mode, exerts a braking force on the vehicle wheel associated with the respective axle, thereby generating a drag torque including the braking torque and the regeneration torque of the electric drive, the drag torque being separately regulatable on the front and rear axles. To prevent overbraking of the rear axle and a loss of driving stability of the vehicle, a regeneration torque acting on the rear axle is controlled or regulated such that the drag torque acting on the rear axle does not exceed a maximum drag torque value associated with that axle.
    Type: Grant
    Filed: April 3, 2008
    Date of Patent: May 14, 2013
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Frank Seurer, Daniel Fischer, Stefan Stölzl
  • Publication number: 20120167663
    Abstract: A sensor arrangement for capturing the coefficient of friction from a roadway surface, wherein the sensor arrangement is arranged on a motor vehicle and includes at least one radiation emitter unit and at least one electronic evaluation circuit, wherein the radiation emitter unit emits electromagnetic radiation toward the roadway surface and the radiation is at least to some extent reflected and/or scattered at the roadway surface and the reflected and/or scattered radiation is at least to some extent captured in the radiation emitter unit and/or in one or more additional sensor units, wherein the electronic evaluation circuit is designed such that it ascertains a piece of coefficient-of-friction information for the roadway surface from the intensity of the reflected and/or scattered radiation or a variable which is dependent thereon.
    Type: Application
    Filed: July 19, 2010
    Publication date: July 5, 2012
    Applicants: CONTINENTAL ENGINEERING SERVICES GMBH, CONTINENTAL TEVES AG & CO. OHG
    Inventors: Stéphan Groitzsch, Matthias Schorn, Daniel Fischer, Stefan Stölzl
  • Publication number: 20120143454
    Abstract: A system for stabilizing a motor vehicle including at least one speed sensor for sensing a longitudinal speed and a transversal speed of the motor vehicle; a calculation unit which is designed to calculate an attitude angle of the motor vehicle from the sensed vehicle longitudinal speed and the sensed vehicle transversal speed; an evaluation unit which is coupled to the calculation unit and is designed to compare the attitude angle with a predefined threshold value and to detect an oversteering situation if the attitude angle exceeds the threshold value; an actuation unit which is coupled to the evaluation unit, and an actuator which influences the driving behavior of the motor vehicle, wherein the actuation unit is designed to actuate the actuator in an oversteering situation. In addition, a method which the system is suitable for carrying out is disclosed.
    Type: Application
    Filed: December 12, 2011
    Publication date: June 7, 2012
    Applicant: CONTINENTAL TEVES AG & CO. OHG
    Inventors: Stephan Groitzsch, Hans Christian Enders, Otmar Schreiner, Frank Steinmeier, Daniel Fischer, Stefan Stölzl
  • Patent number: 7987031
    Abstract: The invention relates to a device for determining a tendency to tilt about the longitudinal axis and a tendency to turn about the vertical axis of a vehicle. The detection system is characterized by a lateral acceleration sensor producing a lateral acceleration signal, a yaw rate sensor producing a yaw rate signal, a steering angle sensor producing a steering angle signal, wheel speed sensors producing the rotation signals of the wheels, and which includes a controller which, in response to the steering angle, the steering velocity and the vehicle speed, determines a tendency to tilt about the longitudinal axis of a vehicle and which, in response to the lateral acceleration sensor, the yaw rate sensor, the steering angle sensor and the wheel speed sensors determines the tendency to turn about the vertical axis of the vehicle, and with the controller generating a triggering signal for at least one passenger protection means depending on the extent of these tendencies.
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: July 26, 2011
    Assignee: Continental Teves AG 7 Co., OHG
    Inventors: Jürgen Diebold, Stefan Stölzl, Helmut Fennel, Michael Klug
  • Publication number: 20100290030
    Abstract: A sensor device for detecting a motion state of a motor vehicle. The sensor device includes at least one laser unit having a light source for emitting coherent light which is transmitted in the direction of a roadway surface, and an interference detector which is designed to detect at least one measurement variable which characterizes interference between the light scattered at the surface and the light of the light source. The measurement variable represents a speed component of the sensor device and/or a distance between the sensor device and the roadway surface. The laser unit is coupled to an evaluation device which is designed to determine, from the measurement variable, at least one variable which characterizes the motion state of the vehicle, in particular a speed component of the center of gravity of the vehicle, a rotational angle or a rotation rate of the vehicle.
    Type: Application
    Filed: September 17, 2008
    Publication date: November 18, 2010
    Applicants: Continental Teves AG & Co. oHG, ADC Automotive Distance Control Systems GmbH, Continental Engineering Service GmbH
    Inventors: Stephan Groitzsch, Wilfried Mehr, Bernhard Schmidt, Matthias Schorn, Christian Gutmann, Stefan Stölzl, Frank Steinmeier, Artur Otto, Thomas Zuccaro
  • Patent number: 7503210
    Abstract: An allocation method combines two tire pressure monitoring systems in motor vehicles being equipped with pressure measuring modules. Each pressure measuring module records a value responsive to the tire inflation pressure and sends the latter to a receiving unit connected to an evaluating device together with an individual identification code (IDx) allocated to the respective pressure measuring module. Signals about the rotational speed of each one wheel being sensed by wheel rotational speed sensors are transmitted to the evaluating device, and since the installation positions y of the wheels at the vehicle are known to the evaluating device, the wheels at the vehicle are known, and the allocation method is performed by taking into consideration established probability values W_IDx_y, with the probability values W_IDx_y describing a frequency distribution which indicates how often pressure measuring modules with the identification codes IDx are detected as pertaining to the installation positions y.
    Type: Grant
    Filed: September 2, 2004
    Date of Patent: March 17, 2009
    Assignee: Continental Teves AG & Co oHG
    Inventors: Peter Lauer, Stefan Stölzl, Andreas Köbe, Vladimir Koukes
  • Patent number: 7331220
    Abstract: Disclosed is a tire pressure monitoring device for a motor vehicle. A tire pressure monitoring system with direct measurement includes a transmission device for transmitting tire pressure values determined by pressure sensors, and a tire pressure monitoring system with indirect measurement that operates on the basis of wheel speed sensors. The tire pressure monitoring system with direct measurement includes a tire pressure measuring device for measuring a tire pressure value only on each wheel of a driven vehicle axle and on at most one wheel of a non-driven axle. The tire pressure monitoring system with indirect measurement includes wheel speed sensors on the non-driven vehicle axle.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: February 19, 2008
    Assignee: Continental Teves AG & Co., OHG
    Inventors: Peter Lauer, Stefan Stölzl, Martin Griesser, Andreas Köbe, Peter Säger, Vladimir Koukes
  • Publication number: 20070276566
    Abstract: The invention relates to a device for determining a tendency to tilt about the longitudinal axis and a tendency to turn about the vertical axis of a vehicle. The detection system is characterized by a lateral acceleration sensor producing a lateral acceleration signal, a yaw rate sensor producing a yaw rate signal, a steering angle sensor producing a steering angle signal, wheel speed sensors producing the rotation signals of the wheels, and which includes a controller which, in response to the steering angle, the steering velocity and the vehicle speed, determines a tendency to tilt about the longitudinal axis of a vehicle and which, in response to the lateral acceleration sensor, the yaw rate sensor, the steering angle sensor and the wheel speed sensors determines the tendency to turn about the vertical axis of the vehicle, and with the controller generating a triggering signal for at least one passenger protection means depending on the extent of these tendencies.
    Type: Application
    Filed: February 25, 2005
    Publication date: November 29, 2007
    Inventors: Jurgen Diebold, Stefan Stolzl, Helmut Fennel, Michael Klug
  • Patent number: 7289930
    Abstract: Disclosed is a method of monitoring tire pressure monitoring systems in a motor vehicle. The motor vehicle has a tire pressure monitoring system with indirect measurement which detects tire inflation pressure loss on the basis of wheel speed data, and a tire pressure monitoring system with direct measurement (TPMS) which detects tire inflation pressure loss from tire inflation pressure values measured directly by pressure modules on the vehicle tire. According to the method a warning relating to tire inflation pressure loss emitted by a pressure module of the tire pressure monitoring system with direct measurement (TPMS) is not transmitted to the driver until this tire inflation pressure loss is confirmed by the tire pressure monitoring system with indirect measurement or by all pressure modules that are still working in fail-free manner. Also disclosed is a computer program product.
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: October 30, 2007
    Assignee: Continental Teves AG & Co., OHG
    Inventors: Stefan Stölzl, Martin Griesser, Andreas Köbe, Peter Lauer, Vladimir Koukes
  • Patent number: 7283924
    Abstract: The present device relates to a method for automatically determining the installation positions of wheels in a motor vehicle. The motor vehicle has a direct measure tire pressure monitoring system includes individual wheel tire pressure measuring devices and transmitting devices for the transfer of TPMS data containing tire air pressure values and identification numbers of the individual wheels to a receiving and evaluating device installed in or on the vehicle. The motor vehicle also includes an indirect measuring tire pressure monitoring system determining DDS data containing air pressure changes and installation positions from the rotational behavior of the individual wheels. The method includes determining correlation coefficients from the TPMS data and the DDS data by using a correlation function.
    Type: Grant
    Filed: November 28, 2003
    Date of Patent: October 16, 2007
    Assignee: Continental Teves AG & Co., OHG
    Inventors: Peter Lauer, Stefan Stölzl, Martin Griesser, Andreas Köbe, Frank Edling, Peter Säger, Vladimir Koukes
  • Publication number: 20070075851
    Abstract: The invention relates to an allocation method for a combined tire pressure monitoring system in motor vehicles, at least partly comprising wheels with pneumatic tires being equipped with pressure measuring modules, and each pressure measuring module records a tire inflation pressure or a value responsive to the tire inflation pressure and sends the latter to a receiving unit connected to an evaluating device by using a transmitting unit connected to the respective pressure measuring module together with an individual identification code (IDx) allocated to the respective pressure measuring module, and wherein signals about the rotational speed of each one wheel being sensed by means of wheel rotational speed sensors are transmitted to the evaluating device, and the installation positions y (VL: front left, VR: front right, HL: rear left, HR: rear right) of the wheels at the vehicle are known to the evaluating device, the wheels at the vehicle are known to the evaluating device, and the allocation method is per
    Type: Application
    Filed: September 2, 2004
    Publication date: April 5, 2007
    Applicant: Continental Teves AG & Co. oHG
    Inventors: Peter Lauer, Stefan Stolzl, Andreas Kobe, Vladimir Koukes
  • Publication number: 20070000316
    Abstract: Disclosed is a tire pressure monitoring device for a motor vehicle. A tire pressure monitoring system with direct measurement includes a transmission device for transmitting tire pressure values determined by pressure sensors, and a tire pressure monitoring system with indirect measurement that operates on the basis of wheel speed sensors. The tire pressure monitoring system with direct measurement includes a tire pressure measuring device for measuring a tire pressure value only on each wheel of a driven vehicle axle and on at most one wheel of a non-driven axle. The tire pressure monitoring system with indirect measurement includes wheel speed sensors on the non-driven vehicle axle.
    Type: Application
    Filed: April 6, 2004
    Publication date: January 4, 2007
    Inventors: Peter Lauer, Stefan Stolzl, Martin Griesser, Andreas Kobe, Peter Sager
  • Publication number: 20060235645
    Abstract: The present device relates to a method for automatically determining the installation positions of wheels in a motor vehicle. The motor vehicle has a direct measure tire pressure monitoring system includes individual wheel tire pressure measuring devices and transmitting devices for the transfer of TPMS data containing tire air pressure values and identification numbers of the individual wheels to a receiving and evaluating device installed in or on the vehicle. The motor vehicle also includes an indirect measuring tire pressure monitoring system determining DDS data containing air pressure changes and installation positions from the rotational behavior of the individual wheels. The method includes determining correlation coefficients from the TPMS data and the DDS data by using a correlation function.
    Type: Application
    Filed: November 28, 2003
    Publication date: October 19, 2006
    Inventors: Peter Lauer, Stefan Stölzl, Martin Griesser, Andreas Köbe, Frank Edling, Peter Säger, Vladimir Koukes
  • Publication number: 20060212256
    Abstract: Disclosed is a method of monitoring tire pressure monitoring systems in a motor vehicle. The motor vehicle has a tire pressure monitoring system with indirect measurement which detects tire inflation pressure loss on the basis of wheel speed data, and a tire pressure monitoring system with direct measurement (TPMS) which detects tire inflation pressure loss from tire inflation pressure values measured directly by pressure modules on the vehicle tire. According to the method a warning relating to tire inflation pressure loss emitted by a pressure module of the tire pressure monitoring system with direct measurement (TPMS) is not transmitted to the driver until this tire inflation pressure loss is confirmed by the tire pressure monitoring system with indirect measurement or by all pressure modules that are still working in fail-free manner. Also disclosed is a computer program product.
    Type: Application
    Filed: July 29, 2004
    Publication date: September 21, 2006
    Inventors: Stefan Stölzl, Martin Griesser, Andreas Köbe, Peter Lauer, Vladimir Koukes
  • Publication number: 20050173980
    Abstract: The most important aspect of brake systems in motor vehicles functioning according to the brake-by-wire principle is that the driver's braking requirements are detected quickly and reliably. Fulfilling this requirement primarily depends on the pedal sensor system associated with the brake pedal and its measuring devices for determining the characteristic values of the brake pedal actuation. The present invention provides for at least two measuring devices for determining the braking requirement, with such measuring devices sensing the same characteristic value of the brake pedal actuation, e.g. the brake-pedal actuation force, brake-pedal travel or brake-pedal angle. These braking requirement signals are compared to a signal from a third measuring device in order to monitor the braking requirement measuring devices.
    Type: Application
    Filed: February 24, 2005
    Publication date: August 11, 2005
    Inventors: Jurgen Bohm, Stefan Stolzl, Rainer Oehler
  • Publication number: 20050131613
    Abstract: The most important aspect of brake systems in motor vehicles functioning according to the brake-by-wire principle is that the driver's braking requirements are detected quickly and reliably. Fulfilling this requirement primarily depends on the pedal sensor system associated with the brake pedal and its measuring devices for determining the characteristic values of the brake pedal actuation. The present invention provides for at least two measuring devices for determining the braking requirement, with such measuring devices sensing the same characteristic value of the brake pedal actuation, e.g. the brake-pedal actuation force, brake-pedal travel or brake-pedal angle. These braking requirement signals are compared to a signal from a third measuring device in order to monitor the braking requirement measuring devices.
    Type: Application
    Filed: December 9, 2003
    Publication date: June 16, 2005
    Inventors: Jurgen Bohm, Stefan Stolzl, Rainer Oehler
  • Patent number: 6871917
    Abstract: The present invention relates to a device for controlling electromagnetically operable valves of an electrohydraulic brake system for motor vehicles of the ‘brake-by-wire’ type having an electronic control or regulation unit that comprises at least one valve driver stage. In order to ensure maximum possible availability of the electronically controlled system functions, especially with a view to achieving a short stopping distance and a sufficient degree of vehicle stability regardless of the vehicle type or of whether the vehicle is loaded or unloaded, according to the present invention, the control and regulation unit includes two additional valve driver stages associated with which is a first and a second group of valves, the said driver stages being used to disable the first or the second group when malfunction occurs.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: March 29, 2005
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Bernhard Giers, Robert Schmidt, Stefan Stölzl, Ralf Junge
  • Publication number: 20040100146
    Abstract: In a method for operating an electronically adjustable brake actuation system for motor vehicles comprising a de-pressurized hydraulic fluid reservoir (4), a pressure source (20) that can be controlled by means of an electronic control unit (31) and whose pressure is adapted to be applied to wheel brakes (6, 7; 13, 14) of the vehicle, a device (2, 32, S1) for identifying the deceleration requested by the driver, as well as valve devices (8, 10, 11, 16, 17, 18, 19, 26, 27) connected upstream of the wheel brakes (6, 7; 13, 14), the wheel brakes (6, 7; 13, 14) are connectable alternatively to the pressure source (20) or to the pressure fluid reservoir (4).
    Type: Application
    Filed: May 21, 2003
    Publication date: May 27, 2004
    Inventors: Bernhard Giers, Robert Schmidt, Andreas Klein, Stefan Stolzl, Ralf Junge