Patents by Inventor Christoph Butscher
Christoph Butscher 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: 9835054Abstract: An exhaust gas turbocharger may include a shaft mounted in a bearing housing carrying a compressor wheel and a turbine wheel. The shaft may include a sealing bush arranged on the shaft in a rotationally fixed manner. The sealing bush together with a bearing housing cover may at least partially delimit an annular oil centrifuging space arranged coaxially to the sealing bush. The bearing housing cover may include a guiding nib located radially outside the sealing bush partially covering the sealing bush in axial direction. The guiding nib may be configured to guide oil separated in the oil centrifuging space onto the rotating sealing bush. The rotating sealing bush may be configured to direct the oil into the oil centrifuging space in response to centrifugal force creating an oil swirl.Type: GrantFiled: February 20, 2014Date of Patent: December 5, 2017Assignee: Bosch Mahle Turbo Systems GmBH & Co. KGInventors: Friedemann Weber, Thomas Berger, Thanh-Hung Nguyen-Schaefer, Christoph Butscher, Jasmin Hausser, Andreas Fath
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Patent number: 9677603Abstract: An exhaust gas turbocharger may include a bearing housing and a rotor. The rotor may have a shaft mounted in the bearing housing via two radial bearing bushes. Each radial bearing bush may have an inner surface facing the shaft. The inner surface may have a single chamfer, where the single chamfers of the two radial bearing bushes face one another, or two chamfers, where one of the two chamfers for each of the two radial bearing bushes facing one another are larger than the other of the two chamfers for each of the two radial bearing bushes facing away from one another.Type: GrantFiled: April 28, 2015Date of Patent: June 13, 2017Assignee: Bosch Mahle Turbo Systems GmbH & Co. KGInventors: Ruediger Kleinschmidt, Ulrich Siol, Alexander Baeuerle, Thomas Striedelmeyer, Joerg Eckert, Christoph Butscher
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Publication number: 20160010500Abstract: A supercharging device may include a rotor mounted in a bearing housing via at least one bearing bush. The bearing bush may include an oil bore. An oil film may be disposed at least one of between the rotor and the bearing bush and between the bearing bush and the bearing housing. The bearing housing may include at least one oil feed duct for lubricating the bearing bush. At least one of the oil feed duct and the oil bore may be configured with respect to the bearing bush such that the bearing bush during the operation of the supercharging device is positively accelerated in a direction of rotation of the rotor via an oil jet communicated from the oil feed duct.Type: ApplicationFiled: July 8, 2015Publication date: January 14, 2016Inventors: Ruediger Kleinschmidt, Ulrich Siol, Alexander Baeuerle, Thomas Striedelmeyer, Joerg Eckert, Christoph Butscher
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Publication number: 20150308494Abstract: An exhaust gas turbocharger may include a bearing housing and a rotor. The rotor may have a shaft mounted in the bearing housing via two radial bearing bushes. Each radial bearing bush may have an inner surface facing the shaft. The inner surface may have a single chamfer, where the single chamfers of the two radial bearing bushes face one another, or two chamfers, where one of the two chamfers for each of the two radial bearing bushes facing one another are larger than the other of the two chamfers for each of the two radial bearing bushes facing away from one another.Type: ApplicationFiled: April 28, 2015Publication date: October 29, 2015Inventors: Ruediger Kleinschmidt, Ulrich Siol, Alexander Baeuerle, Thomas Striedelmeyer, Joerg Eckert, Christoph Butscher
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Publication number: 20140234075Abstract: An exhaust gas turbocharger may include a shaft mounted in a bearing housing carrying a compressor wheel and a turbine wheel. The shaft may include a sealing bush arranged on the shaft in a rotationally fixed manner. The sealing bush together with a bearing housing cover may at least partially delimit an annular oil centrifuging space arranged coaxially to the sealing bush. The bearing housing cover may include a guiding nib located radially outside the sealing bush partially covering the sealing bush in axial direction. The guiding nib may be configured to guide oil separated in the oil centrifuging space onto the rotating sealing bush. The rotating sealing bush may be configured to direct the oil into the oil centrifuging space in response to centrifugal force creating an oil swirl.Type: ApplicationFiled: February 20, 2014Publication date: August 21, 2014Applicant: Bosch Mahle Turbo Systems GmbH & Co. KGInventors: Friedemann Weber, Thomas Berger, Thanh-Hung Nguyen-Schaefer, Christoph Butscher, Jasmin Hausser, Andreas Fath
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Patent number: 8348176Abstract: Proposed is a fuel injector for injecting fuel into a combustion chamber of an internal combustion engine. The fuel injector has a housing in which are arranged an injection valve element with a nozzle needle, a pressure boosting device, and a first control valve, and a second control valve. The first control valve controls a control space of the nozzle needle and the second control valve controls a differential pressure space of the pressure boosting device. A first return flow connection is provided for discharging the control quantity of the control space of the nozzle needle, and a second return flow connection is provided for discharging the control quantity of the pressure boosting device. The two return flow connections are arranged on different housing parts of the housing.Type: GrantFiled: January 3, 2008Date of Patent: January 8, 2013Assignee: Robert Bosch GmbHInventors: Juergen Frasch, Heinz-Bernd Haiser, Christoph Butscher, Hans-Christoph Magel, Stephan Wehr
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Patent number: 7789069Abstract: The invention relates to a check valve with a spherical valve element whose service life and operating reliability is considerably increased in relation to conventional check valves. The improved check valve is used in an injector for a fuel injection system of an internal combustion engine, having a hydraulic pressure booster.Type: GrantFiled: January 2, 2008Date of Patent: September 7, 2010Assignee: Robert Bosch GmbHInventors: Nestor Rodriguez-Amaya, Markus Leimser, Michael Stengele, Andreas Theurer, Christoph Butscher, Alexander Giehl
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Patent number: 7770824Abstract: A fuel injector is disclosed in which at least one electrically-controlled valve is arranged within an injector body and is connected to an injector body contact which is accessible from outside the injector body by at least one solid conductor having an essentially stable form under the influence of its intrinsic weight. The at least one solid conductor is run through at least one conductor channel and at least one alignment sleeve which may be completely or partly inserted in the at least one conductor channel and forces the at least one solid conductor completely or partly to adopt a given inclination to the injector axis and hence aligns the same.Type: GrantFiled: December 14, 2005Date of Patent: August 10, 2010Assignee: Robert Bosch GmbHInventors: Juergen Frasch, Christoph Butscher, Michael Fleig, Stephan Wehr
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Publication number: 20100180589Abstract: The present invention relates to a charging device (1) for a combustion engine, more preferably exhaust gas turbocharger, preferentially in a motor vehicle, comprising a rotor having a compressor wheel (4) and a shaft (5), a stator (3) having a bearing housing (6) in which the shaft (5) is rotatably mounted about an axis of rotation (7) and a compressor-sided sealing zone (8), in which a rotor-sided sealing surface (9) and a stator-sided sealing surface (10) are located axially opposite each other. An improved sealing effect can be achieved if at least one of the sealing surfaces (9, 10) has a plurality of depressions (15) arranged distributed in circumferential direction.Type: ApplicationFiled: January 20, 2010Publication date: July 22, 2010Inventors: Thomas Berger, Christoph Butscher, Jörg Jennes
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Publication number: 20100024774Abstract: The invention relates to a check valve with a spherical valve element whose service life and operating reliability is considerably increased in relation to conventional check valves. The improved check valve is used in an injector for a fuel injection system of an internal combustion engine, having a hydraulic pressure booster.Type: ApplicationFiled: January 2, 2008Publication date: February 4, 2010Inventors: Nestor Rodriguez-Amaya, Markus Leimser, Michael Stengele, Andreas Theurer, Christoph Butscher, Alexander Giehl
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Publication number: 20100019068Abstract: Proposed is a fuel injector for injecting fuel into a combustion chamber of an internal combustion engine. The fuel injector has a housing in which are arranged an injection valve element with a nozzle needle, a pressure boosting device, and a first control valve, and a second control valve. The first control valve controls a control space of the nozzle needle and the second control valve controls a differential pressure space of the pressure boosting device. A first return flow connection is provided for discharging the control quantity of the control space of the nozzle needle, and a second return flow connection is provided for discharging the control quantity of the pressure boosting device. The two return flow connections are arranged on different housing parts of the housing.Type: ApplicationFiled: January 3, 2008Publication date: January 28, 2010Inventors: Juergen Frasch, Heinz-Bernd Haiser, Christoph Butscher, Hans-Christoph Magel, Stephan Wehr
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Patent number: 7571715Abstract: A fuel injector with an injector body is disclosed which has at least two separate function units that are largely independent of one another. The function units are reversibly joined to one another by a connecting element and at least one positioning pin. The two function units can be produced and tested separately, which greatly simplifies both the production process and maintenance of the fuel injectors and lessens the vulnerability of the fuel injectors to malfunction.Type: GrantFiled: December 16, 2005Date of Patent: August 11, 2009Assignee: Robert Bosch GmbHInventors: Juergen Frasch, Christoph Butscher, Michael Fleig, Stephan Wehr
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Publication number: 20080265054Abstract: An injector in which it is possible to switch a pressure booster on or off so that it is possible to control not only the injection duration, but also the progression of the injection pressure within a broad range during the injection.Type: ApplicationFiled: May 9, 2006Publication date: October 30, 2008Inventors: Christoph Buehler, Juergen Frasch, Christoph Butscher, Michael Fleig, Stephan Wehr
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Publication number: 20080121215Abstract: A fuel injector with an injector body is disclosed which has at least two separate function units that are largely independent of one another. The function units are reversibly joined to one another by a connecting element and at least one positioning pin. The two function units can be produced and tested separately, which greatly simplifies both the production process and maintenance of the fuel injectors and lessens the vulnerability of the fuel injectors to malfunction.Type: ApplicationFiled: December 16, 2005Publication date: May 29, 2008Inventors: Juergen Frasch, Christoph Butscher, Michael Fleig, Stephan Wehr
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Publication number: 20080110442Abstract: A fuel injector is disclosed in which at least one electrically-controlled valve is arranged within an injector body and is connected to an injector body contact which is accessible from outside by means of a solid conductor having an essentially stable form under the influence of its intrinsic weight. The at least one solid conductor is run through at least one conductor channel and at least one alignment sleeve which may be completely or partly inserted in at least one conductor channel and forces the at least one solid conductor completely or partly to adopt a given inclination to the injector axis and hence aligns the same.Type: ApplicationFiled: December 14, 2005Publication date: May 15, 2008Inventors: Juergen Frasch, Christoph Butscher, Michael Fleig, Stephan Wehr
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Patent number: 7121476Abstract: A fuel injection device, which has: a nozzle needle, guided displaceably in a nozzle body, which as a function of its position opens or closes at least one injection opening, in which a control chamber, to which fuel can be delivered under pressure via an inlet throttle and from which fuel can be diverted, controlled by a control valve, via an outlet throttle, is provided at a piston face of the nozzle needle facing away from the injection opening, and in which in operation, the position of the nozzle needle is controlled by a pressure difference between the pressure in the control chamber and the pressure of the fuel at the end, toward the injection opening, of the nozzle needle, is characterized in that the nozzle needle is surrounded, over at least part of its length, during operation by fuel at high pressure, such that only in the regions of the nozzle needle near the injection opening and in the control chamber can a lower pressure, differing from the high fuel pressure, occur.Type: GrantFiled: November 4, 2005Date of Patent: October 17, 2006Assignee: Robert Bosch GmbHInventors: Christoph Buehler, Juergen Frasch, Christoph Butscher, Michael Scheurer, Stephan Wehr
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Publication number: 20060097067Abstract: A fuel injection device, which has: a nozzle needle, guided displaceably in a nozzle body, which as a function of its position opens or closes at least one injection opening, in which a control chamber, to which fuel can be delivered under pressure via an inlet throttle and from which fuel can be diverted, controlled by a control valve, via an outlet throttle, is provided at a piston face of the nozzle needle facing away from the injection opening, and in which in operation, the position of the nozzle needle is controlled by a pressure difference between the pressure in the control chamber and the pressure of the fuel at the end, toward the injection opening, of the nozzle needle, is characterized in that the nozzle needle is surrounded, over at least part of its length, during operation by fuel at high pressure, such that only in the regions of the nozzle needle near the injection opening and in the control chamber can a lower pressure, differing from the high fuel pressure, occur.Type: ApplicationFiled: November 4, 2005Publication date: May 11, 2006Inventors: Christoph Buehler, Juergen Frasch, Christoph Butscher, Michael Scheurer, Stephan Wehr