Patents by Inventor Volker Pitzal
Volker Pitzal 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: 9995235Abstract: A method for plausibilization of an engine control function for an internal combustion engine includes: provision of injection parameters with which an injection of fuel into cylinders of the internal combustion engine is controlled on the basis of a torque that is to be realized; estimation of an actual torque of the internal combustion engine as a function of the injection parameters; and evaluation of the actual torque as a function of the torque that is to be realized, in order to plausibilize the engine control function.Type: GrantFiled: December 5, 2008Date of Patent: June 12, 2018Assignee: ROBERT BOSCH GMBHInventors: Guenter Kettenacker, Volker Pitzal
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Patent number: 9358985Abstract: A method and a device for controlling a drive unit of a vehicle are provided in which, starting from the comparison of a first acceleration variable, which is calculated at least from the operating state of the drive unit, and a second acceleration variable, an error is detected. The second acceleration variable includes a first component, in the direction of the vehicle longitudinal axis, and a second component, perpendicular to the vehicle longitudinal axis.Type: GrantFiled: May 2, 2006Date of Patent: June 7, 2016Assignee: ROBERT BOSCH GMBHInventors: Volker Pitzal, Oliver Froehlich, Wolfram Gerwing, Martin Grosser, Franz Laermer, Udo Schulz, Thomas Proepper
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Patent number: 8296043Abstract: In a method for monitoring the functional capacity of an engine controller having a plurality of execution units, a comparison operating mode is provided, in which a torque monitoring program is executed on a plurality of execution units of the system, and signals outputted during the execution of the monitoring program by the execution units are compared with one another in order to recognize an error.Type: GrantFiled: September 19, 2007Date of Patent: October 23, 2012Assignee: Robert Bosch GmbHInventors: Bernd Mueller, Volker Pitzal, Rainer Gmehlich
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Patent number: 8205605Abstract: In a method for operating an internal combustion engine, in particular of a motor vehicle, the internal combustion engine is controlled by at least one drive variable, and an instantaneous torque output by the internal combustion engine is determined from a performance variable of the internal combustion engine that differs from the drive variable. To determine the instantaneous torque, an exhaust-gas temperature of the internal combustion engine is used as performance quantity that differs from the drive variable.Type: GrantFiled: November 14, 2007Date of Patent: June 26, 2012Assignee: Robert Bosch GmbHInventors: Volker Pitzal, Wolfram Gerwing
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Publication number: 20120055144Abstract: The invention relates to a method for operating a hydraulic hybrid vehicle (2) having a primary (5) and a hydraulic (6) drive unit, which is operated with a hydraulic medium for creating a positive or negative torque, said medium being delivered in different operational states by means of the hydraulic drive unit (6) from a hydropneumatic low pressure accumulator (12) into a hydropneumatic high pressure accumulator (11) or is discharged from the hydropneumatic high pressure accumulator (11) into the hydropneumatic low pressure accumulator (12) for driving the hydraulic drive unit (6). In order to further increase the safety and/or the driving comfort during the operation of the hydraulic hybrid vehicle having a primary drive unit and a hydraulic drive unit, the pressure and/or the temperature or a change of the pressure and/or the temperature is detected in the hydropneumatic high pressure accumulator (11) in order to monitor the torque generated by the hydraulic drive unit (6).Type: ApplicationFiled: January 19, 2010Publication date: March 8, 2012Applicant: ROBERT BOSCH GMBHInventors: Volker Pitzal, Udo Schulz
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Publication number: 20100004841Abstract: In a method for monitoring the functional capacity of an engine controller having a plurality of execution units, a comparison operating mode is provided, in which a torque monitoring program is executed on a plurality of execution units of the system, and signals outputted during the execution of the monitoring program by the execution units are compared with one another in order to recognize an error.Type: ApplicationFiled: September 19, 2007Publication date: January 7, 2010Inventors: Bernd Mueller, Volker Pitzal, Rainer Gmehlich
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Publication number: 20090320793Abstract: In a method for operating an internal combustion engine, in particular of a motor vehicle, the internal combustion engine is controlled by at least one drive variable, and an instantaneous torque output by the internal combustion engine is determined from a performance variable of the internal combustion engine that differs from the drive variable. To determine the instantaneous torque, an exhaust-gas temperature of the internal combustion engine is used as performance quantity that differs from the drive variable.Type: ApplicationFiled: November 14, 2007Publication date: December 31, 2009Inventors: Volker Pitzal, Wolfram Gerwing
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Publication number: 20090187330Abstract: A method for plausibilization of an engine control function for an internal combustion engine includes: provision of injection parameters with which an injection of fuel into cylinders of the internal combustion engine is controlled on the basis of a torque that is to be realized; estimation of an actual torque of the internal combustion engine as a function of the injection parameters; and evaluation of the actual torque as a function of the torque that is to be realized, in order to plausibilize the engine control function.Type: ApplicationFiled: December 5, 2008Publication date: July 23, 2009Inventors: Guenter KETTENACKER, Volker Pitzal
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Publication number: 20090171524Abstract: A method and a device for controlling a drive unit of a vehicle are provided in which, starting from the comparison of a first acceleration variable, which is calculated at least from the operating state of the drive unit, and a second acceleration variable, an error is detected. The second acceleration variable includes a first component, in the direction of the vehicle longitudinal axis, and a second component, perpendicular to the vehicle longitudinal axis.Type: ApplicationFiled: May 2, 2006Publication date: July 2, 2009Inventors: Volker Pitzal, Oliver Froehlich, Wolfram Gerwing, Martin Grosser, Franz Laermer, Udo Schulz, Thomas Proepper
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Patent number: 7263977Abstract: A method is provided for operating an internal combustion engine 10 in overrun condition, which method includes the steps of: release of a monitoring of a control signal for a power actuator of the internal combustion engine when predetermined release conditions have been satisfied, which include the exceeding of a release rotary speed of the internal combustion engine; after the release, comparing a control signal for the power actuator of the internal combustion engine to a threshold value, and triggering an error response if the control signal exceeds the threshold value. The method provides that the release speed is varied as a function of the intervention of an idling speed control in the formation of the control signal. Also provided is a control unit which controls such a method.Type: GrantFiled: March 11, 2004Date of Patent: September 4, 2007Assignee: Robert Bosch GmbHInventors: Volker Pitzal, Gerit von Schwertfuehrer
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Patent number: 7194997Abstract: A method for monitoring an internal combustion engine is described in which fuel is injected directly into at least one combustion chamber in at least two partial injections via at least one final controlling element, in which an actual torque is determined at least on the basis of one fuel mass that is to be injected and/or has been injected, such actual torque being compared with a permitted torque of the internal combustion engine and an error response being initiated if the actual torque is in a predefined ratio to the permitted torque. A corresponding application of the method for monitoring an internal combustion engine as well as a corresponding device are also described.Type: GrantFiled: March 26, 2003Date of Patent: March 27, 2007Assignee: Robert Bosch GmbHInventors: Volker Pitzal, Gerit Edler Von Schwertfuehrer
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Publication number: 20070000477Abstract: A method is provided for operating an internal combustion engine 10 in overrun condition, which method includes the steps of: release of a monitoring of a control signal for a power actuator of the internal combustion engine when predetermined release conditions have been satisfied, which include the exceeding of a release rotary speed of the internal combustion engine; after the release, comparing a control signal for the power actuator of the internal combustion engine to a threshold value, and triggering an error response if the control signal exceeds the threshold value. The method provides that the release speed is varied as a function of the intervention of an idling speed control in the formation of the control signal. Also provided is a control unit which controls such a method.Type: ApplicationFiled: March 11, 2004Publication date: January 4, 2007Inventors: Volker Pitzal, Gerit Von Schwertfuehrer
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Publication number: 20050172930Abstract: A method for monitoring an internal combustion engine is described in which fuel is injected directly into at least one combustion chamber in at least two partial injections via at least one final controlling element, in which an actual torque is determined at least on the basis of one fuel mass that is to be injected and/or has been injected, such actual torque being compared with a permitted torque of the internal combustion engine and an error response being initiated if the actual torque is in a predefined ratio to the permitted torque. A corresponding application of the method for monitoring an internal combustion engine as well as a corresponding device are also described.Type: ApplicationFiled: March 26, 2003Publication date: August 11, 2005Inventors: Volker Pitzal, Gerit Edler Von Schwertfuehrer
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Patent number: 6826504Abstract: A method and an apparatus for controlling system parameters, in particular for controlling the voltage applied to piezoelectric elements (10, 20, 30, 40, 50, 60) within a circuit (A) for charging and discharging piezoelectric elements (10, 20, 30, 40, 50, 60) are described. The method is characterized by modifying at least one control parameter for the control of a system parameter, in particular a target voltage for the voltage applied to a piezoelectric element (10, 20, 30, 40, 50, 60), in view of at least one systematic error occurring during a first control procedure of the system parameter to obtain a corrected control parameter for a second and/or a further control of the system parameter. The apparatus is particularly eligible for use with the inventive method.Type: GrantFiled: April 2, 2001Date of Patent: November 30, 2004Assignee: Robert Bosch GmbHInventors: Johannes-Jörg Rueger, Matthias Mrosik, Volker Pitzal, Udo Schulz
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Patent number: 6820474Abstract: A method is proposed for diagnosing the drive voltage for a piezoelectric actuator of an injector, in which the drive voltage is measured for the individual phases of the injection procedure. With respect to each control phase, a corresponding tolerance band is provided, which is set using the setpoint value of the drive voltage. The tolerance ranges are established as a function of operating and/or environmental conditions. If, for the individual drive cycles, the corresponding tolerance ranges are not reached, then, in response to repeated measurement, these erroneous measurements are counted. When a preestablished number for the erroneous measurements is exceeded, then an ongoing error is diagnosed. If, after a certain time, the number is not exceeded, then the counter is reset. In the case of an error, the error storage unit can be reset using a maintenance plug-in device during maintenance.Type: GrantFiled: July 1, 2003Date of Patent: November 23, 2004Assignee: Robert Bosch GmbHInventors: Johannes-Joerg Rueger, Matthias Mrosik, Volker Pitzal, Udo Schulz
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Patent number: 6755178Abstract: In an apparatus and a method for monitoring a drive unit of a vehicle and/or components allocated thereto, a torque variable is determined that characterizes the torque requirement of the drive unit and/or the allocated components. Faults are recognized on the basis of the torque variable and/or a variable on the basis of which the torque variable is determined.Type: GrantFiled: June 18, 2002Date of Patent: June 29, 2004Assignee: Robert Bosch GmbHInventors: Juergen Bauer, Andreas Huber, Volker Pitzal, Udo Schulz
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Patent number: 6705291Abstract: Fuel injection system comprising a piezoelectric element for controlling the amount of injected fuel and further comprising a control unit for determination of a possible fault of the piezoelectric element or of an electric circuitry driving the piezoelectric element based upon a value related to the capacitance of the piezoelectric element.Type: GrantFiled: April 2, 2001Date of Patent: March 16, 2004Assignee: Robert Bosch GmbHInventors: Johannes-Jörg Rueger, Matthias Mrosik, Volker Pitzal, Bertram Sugg, Friedrich Boecking, Udo Schulz
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Publication number: 20040008032Abstract: A method is proposed for diagnosing the drive voltage for a piezoelectric actuator of an injector, in which the drive voltage is measured for the individual phases of the injection procedure. With respect to each control phase, a corresponding tolerance band is provided, which is set using the setpoint value of the drive voltage. The tolerance ranges are established as a function of operating and/or environmental conditions. If, for the individual drive cycles, the corresponding tolerance ranges are not reached, then, in response to repeated measurement, these erroneous measurements are counted. When a preestablished number for the erroneous measurements is exceeded, then an ongoing error is diagnosed. If, after a certain time, the number is not exceeded, then the counter is reset. In the case of an error, the error storage unit can be reset using a maintenance plug-in device during maintenance.Type: ApplicationFiled: July 1, 2003Publication date: January 15, 2004Inventors: Johannes-Joerg Rueger, Matthias Mrosik, Volker Pitzal, Udo Schulz
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Patent number: 6675078Abstract: The invention is directed to a method and an arrangement for controlling a motor vehicle having an integrated electric machine which generates electric as well as mechanical power. In the context of a hierarchal control structure having several logic components, the electric machine is allocated as a component “electric drive” to the component “drive” with respect to its function for generating mechanical power and as a component “generator” to the component “vehicle electric drive” with respect to its function for generating electric power.Type: GrantFiled: September 24, 2001Date of Patent: January 6, 2004Assignee: Robert Bosch GmbHInventors: Rainer Bitzer, Volker Pitzal, Martin-Peter Bolz, Rolf Maier-Landgrebe, Marko Poljansek, Torsten Heidrich, Holger Huelser, Rainer Mayer
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Patent number: 6619268Abstract: The invention describes a method and an apparatus for a fuel injection system with a piezoelectric element for controlling the amount of injected fuel by charging and/or discharging the piezoelectric element, wherein the fuel injection system comprises a current flow controller for charging and/or discharging the piezoelectric element based upon the gradient of a voltage across the piezoelectric element due to a charge the piezoelectric element is carrying.Type: GrantFiled: April 2, 2001Date of Patent: September 16, 2003Assignee: Robert Bosch GmbHInventors: Johannes-Jörg Rueger, Matthias Mrosik, Volker Pitzal, Udo Schulz