Patents by Inventor Rene Zieher
Rene Zieher 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: 9976506Abstract: A method for calibrating post-injections in a fuel injection system, including a fuel accumulator, of an internal combustion engine, in particular of a motor vehicle, in which it is provided in particular that the calibration of at least one post-injection takes place based on the pressure drop in the fuel accumulator caused by the fuel injection.Type: GrantFiled: April 21, 2015Date of Patent: May 22, 2018Assignee: ROBERT BOSCH GMBHInventors: Michael Schenk, Rene Zieher
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Patent number: 9863358Abstract: A method for operating a common-rail system of a motor vehicle that includes a common-rail-pressure sensor configuration having at least two signal paths, and that can be operated at a maximally permissible common-rail pressure and at a minimally permissible common-rail pressure. Sensor signals are read out in each case in response to a pressure measurement in a common rail of the common-rail system via the at least two signal paths, and a signal deviation value is ascertained that characterizes a deviation between the pressure values that are each determined on the basis of the sensor signals. The method includes reducing the maximally permissible common-rail pressure by a correction value to a maximally permissible emergency common-rail pressure and/or increasing the minimally permissible common-rail pressure by a correction value to a minimally permissible emergency common-rail pressure in response to the signal deviation value exceeding a predefined value.Type: GrantFiled: March 12, 2014Date of Patent: January 9, 2018Assignee: ROBERT BOSCH GMBHInventors: Bernd Becker, Rene Zieher, Andreas Sommerer, Kai Wipplinger, Guenter Veit
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Publication number: 20170152805Abstract: A method for calibrating post-injections in a fuel injection system, including a fuel accumulator, of an internal combustion engine, in particular of a motor vehicle, in which it is provided in particular that the calibration of at least one post-injection takes place based on the pressure drop in the fuel accumulator caused by the fuel injection.Type: ApplicationFiled: April 21, 2015Publication date: June 1, 2017Inventors: Michael Schenk, Rene Zieher
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Patent number: 9567932Abstract: In a method for operating a valve, one valve element of the valve being able to be moved from a first position into a second position by activating an electrically actuatable actuator, the actuator is activated at least once in a first time interval, and is thereafter not activated in a second time interval, and a signal characterizing a strike of the valve element at the first position is ascertained at electrical terminals of the actuator. During the process, an activation energy of the actuator is gradually modified, and a threshold value of the activation energy at which the valve element is just able or is just no longer able to lift is ascertained.Type: GrantFiled: May 14, 2013Date of Patent: February 14, 2017Assignee: Robert Bosch GmbHInventors: Andreas Bartsch, Rene Zieher, Steffen Meyer-Salfeld
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Patent number: 9429093Abstract: A fuel injection system for an internal combustion engine in which pressurized fuel is made available in a pressure accumulator and a fuel pressure prevailing in the pressure accumulator is ascertained with the aid of a pressure sensor and in which the fuel enters a combustion chamber of the internal combustion engine through at least one fuel injection device. A slope of a curve, which links a pressure difference in the pressure accumulator during a fuel injection to an injected fuel quantity, is ascertained and the fuel pressure prevailing in the pressure accumulator is inferred from the slope.Type: GrantFiled: October 4, 2013Date of Patent: August 30, 2016Assignee: ROBERT BOSCH GMBHInventors: Lars Empacher, Rene Zieher, Stephan Olbrich, Michael Schenk
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Patent number: 9284904Abstract: A method for monitoring a fuel pressure in a fuel injection system of an internal combustion engine. A setpoint fuel pressure is initially set in the fuel injection system. Next, a first fuel injection and a subsequent second fuel injection are executed at a time interval shorter than a decay time of a pressure wave in the fuel injection system, triggerable by the first fuel injection. In an additional step, a monitored fuel injection quantity, which is injected via the second fuel injection, is ascertained. An action is executed if the monitored fuel injection quantity differs from a setpoint fuel injection quantity, which is predefinable for the setpoint fuel pressure, by more than a limiting value. The invention also relates to a computer program product for executing the method and to a device for monitoring a fuel pressure in a fuel injection system of an internal combustion engine.Type: GrantFiled: October 12, 2010Date of Patent: March 15, 2016Assignee: ROBERT BOSCH GMBHInventors: Stephan Topp, Rainer Peck, Rene Zieher, Christian Kriechbaum, Steffen Meyer-Salfeld
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Publication number: 20160053706Abstract: A method for operating a common-rail system of a motor vehicle that includes a common-rail-pressure sensor configuration having at least two signal paths, and that can be operated at a maximally permissible common-rail pressure and at a minimally permissible common-rail pressure. Sensor signals are read out in each case in response to a pressure measurement in a common rail of the common-rail system via the at least two signal paths, and a signal deviation value is ascertained that characterizes a deviation between the pressure values that are each determined on the basis of the sensor signals. The method includes reducing the maximally permissible common-rail pressure by a correction value to a maximally permissible emergency common-rail pressure and/or increasing the minimally permissible common-rail pressure by a correction value to a minimally permissible emergency common-rail pressure in response to the signal deviation value exceeding a predefined value.Type: ApplicationFiled: March 12, 2014Publication date: February 25, 2016Inventors: Bernd BECKER, Rene ZIEHER, Andreas SOMMERER, Kai WIPPLINGER, Guenter VEIT
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Publication number: 20150167571Abstract: In a method for operating a valve, one valve element of the valve being able to be moved from a first position into a second position by activating an electrically actuatable actuator, the actuator is activated at least once in a first time interval, and is thereafter not activated in a second time interval, and a signal characterizing a strike of the valve element at the first position is ascertained at electrical terminals of the actuator. During the process, an activation energy of the actuator is gradually modified, and a threshold value of the activation energy at which the valve element is just able or is just no longer able to lift is ascertained.Type: ApplicationFiled: May 14, 2013Publication date: June 18, 2015Applicant: Robert Bosch GmbHInventors: Andreas Bartsch, Rene Zieher, Steffen Meyer-Salfeld
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Publication number: 20140100761Abstract: A fuel injection system for an internal combustion engine in which pressurized fuel is made available in a pressure accumulator and a fuel pressure prevailing in the pressure accumulator is ascertained with the aid of a pressure sensor and in which the fuel enters a combustion chamber of the internal combustion engine through at least one fuel injection device. A slope of a curve, which links a pressure difference in the pressure accumulator during a fuel injection to an injected fuel quantity, is ascertained and the fuel pressure prevailing in the pressure accumulator is inferred from the slope.Type: ApplicationFiled: October 4, 2013Publication date: April 10, 2014Applicant: ROBERT BOSCH GMBHInventors: Lars EMPACHER, Rene ZIEHER, Stephan OLBRICH, Michael SCHENK
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Publication number: 20120283934Abstract: A method for monitoring a fuel pressure in a fuel injection system of an internal combustion engine. A setpoint fuel pressure is initially set in the fuel injection system. Next, a first fuel injection and a subsequent second fuel injection are executed at a time interval shorter than a decay time of a pressure wave in the fuel injection system, triggerable by the first fuel injection. In an additional step, a monitored fuel injection quantity, which is injected via the second fuel injection, is ascertained. An action is executed if the monitored fuel injection quantity differs from a setpoint fuel injection quantity, which is predefinable for the setpoint fuel pressure, by more than a limiting value. The invention also relates to a computer program product for executing the method and to a device for monitoring a fuel pressure in a fuel injection system of an internal combustion engine.Type: ApplicationFiled: October 12, 2010Publication date: November 8, 2012Inventors: Stephan Topp, Rainer Peck, Rene Zieher, Christian Kriechbaum, Steffen Meyer-Salfeld
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Patent number: 8166806Abstract: A method and a device for monitoring a fuel injection system are described. A manipulated variable is modified by a certain amount. A first value of a measured variable is detected prior to the modification and at least a second value is detected after the modification. An error is detected when the first value and/or the at least second value deviate from an expected value.Type: GrantFiled: September 4, 2007Date of Patent: May 1, 2012Assignee: Robert Bosch GmbHInventors: Peter Kappelmann, Dietrich Beckenbauer, Joachim Palmer, Rene Zieher
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Patent number: 7991538Abstract: In a fuel system of an internal combustion engine, the fuel quantity injected into a combustion chamber is a function of an activation period, during which a fuel injection device is activated. A pressure sensor detects the pressure in the fuel rail and provides a signal. The pressure in the fuel rail may be regulated to a setpoint pressure using a setting unit and employing the signal provided by the pressure sensor.Type: GrantFiled: December 19, 2008Date of Patent: August 2, 2011Assignee: Robert Bosch GmbHInventors: Stephan Olbrich, Rainer Peck, Christian Kriechbaum, Michael Schenk, Steffen Meyer-Salfeld, Rene Zieher, Markus Viereck
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Publication number: 20100121600Abstract: A method for checking a pressure sensor of a fuel injection system, especially of a motor vehicle, the fuel injector system having a pressure reservoir to which the pressure sensor and an injector are assigned; in the method, a fuel quantity being injected under a pressure by the injector, wherein a pressure difference, which is created by a sudden pressure drop caused by the injection process, is ascertained as a function of the pressure and the fuel quantity.Type: ApplicationFiled: November 10, 2009Publication date: May 13, 2010Inventor: Rene Zieher
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Publication number: 20100050755Abstract: A method and a device for monitoring a fuel injection system are described. A manipulated variable is modified by a certain amount. A first value of a measured variable is detected prior to the modification and at least a second value is detected after the modification. An error is detected when the first value and/or the at least second value deviate from an expected value.Type: ApplicationFiled: September 4, 2007Publication date: March 4, 2010Inventors: Peter Kappelmann, Dietrich Beckenbauer, Joachim Palmer, Rene Zieher
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Publication number: 20090164102Abstract: In a fuel system of an internal combustion engine, the fuel quantity injected into a combustion chamber is a function of an activation period, during which a fuel injection device is activated. A pressure sensor detects the pressure in the fuel rail and provides a signal. The pressure in the fuel rail may be regulated to a setpoint pressure using a setting unit and employing the signal provided by the pressure sensor.Type: ApplicationFiled: December 19, 2008Publication date: June 25, 2009Inventors: Stephan OLBRICH, Rainer Peck, Christian Kriechbaum, Michael Schenk, Steffen Meyer-Salfeld, Rene Zieher, Markus Viereck