Patents by Inventor Helmut Clauss
Helmut Clauss 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: 9068540Abstract: The invention relates to a fuel injector for injecting fuel into the combustion chamber of an internal combustion engine, comprising a nozzle needle (1) which is able to perform stroke motions and by the stroke motion of which at least one injection opening can be exposed or closed, and further comprising a control valve (2) for controlling the stroke motion of the nozzle needle (1) in that, depending on the respective switch position of the control valve (2), hydraulic pressure applied in closing direction to the nozzle needle (1) in a control chamber (3) is altered, and further comprising a sensor array (4) for detecting the needle closing time. According to the invention, the sensor array (4) is arranged in the low-pressure area of the fuel injector in a space (5) which is sealed with respect to the fuel-conducting area (6).Type: GrantFiled: October 18, 2011Date of Patent: June 30, 2015Assignee: Robert Bosch GmbHInventors: Holger Rapp, Helmut Clauss, Wolfgang Stoecklein, Bernd Berghaenel, Marco Beier, Changyi Wang
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Publication number: 20140027534Abstract: The invention relates to a fuel injector for a fuel injection system, in particular a common rail injection system, comprising a jet needle (2) which is guided in a stroke-movable manner in a high-pressure bore (1) of the fuel injector, wherein an injection opening (3) can be opened and closed via the stroke movement of said jet needle, and a fuel or pressure sensor (4) having at least one sensor element (5) made of a piezo electrical material for detecting characteristic pressure changes during opening and closing of the jet needle (2). According to the invention, the fuel or pressure sensor (4) is arranged in a low pressure region (6) of the fuel injector and can be loaded directly or indirectly by an axial force (F A) upon opening and closing of the jet needle (2), which is proportional to the control chamber pressure in a control chamber (7).Type: ApplicationFiled: February 22, 2012Publication date: January 30, 2014Applicant: ROBERT BOSCH GMBHInventors: Holger Rapp, Helmut Clauss, Wolfgang Stoecklein, Bernd Berghaenel, Marco Beier, Changyi Wang
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Publication number: 20130240639Abstract: The invention relates to a fuel injector for injecting fuel into the combustion chamber of an internal combustion engine, comprising a nozzle needle (1) which is able to perform stroke motions and by the stroke motion of which at least one injection opening can be exposed or closed, and further comprising a control valve (2) for controlling the stroke motion of the nozzle needle (1) in that, depending on the respective switch position of the control valve (2), hydraulic pressure applied in closing direction to the nozzle needle (1) in a control chamber (3) is altered, and further comprising a sensor array (4) for detecting the needle closing time. According to the invention, the sensor array (4) is arranged in the low-pressure area of the fuel injector in a space (5) which is sealed with respect to the fuel-conducting area (6).Type: ApplicationFiled: October 18, 2011Publication date: September 19, 2013Applicant: ROBERT BOSCH GMBHInventors: Holger Rapp, Helmut Clauss, Wolfgang Stoecklein, Bernd Berghaenel, Marco Beier, Changyi Wang
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Patent number: 8136741Abstract: Disclosed is a fuel injection device comprising a housing and a valve element disposed therein and cooperating with a valve seat located in the area of at least one fuel discharge port. The valve element is composed of several parts while at least two parts of the valve element are coupled to each other via a hydraulic coupler.Type: GrantFiled: May 31, 2006Date of Patent: March 20, 2012Assignee: Robert Bosch GmbHInventors: Juergen Hanneke, Nadja Eisenmenger, Achim Brenk, Lorenz Zerle, Michael Mennicken, Helmut Clauss, Hans-Christoph Magel, Dirk Vahle, Andreas Kellner, Hrvoje Lalic, Joachim Boltz, Falko Bredow, Martin Katz
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Publication number: 20110006137Abstract: The invention relates to a fuel injector having a magnetic assembly, a magnetic core, and a magnetic coil. The magnetic assembly is accommodated in a magnetic sleeve. The magnetic sleeve is provided with feedthroughs for electric contacting pins of the magnetic coil. Elastic sealing elements are inserted into the feedthroughs of the magnetic sleeve such that a pretensioning force acting in radial direction is applied to the contacting pins of the magnetic coil in the mounted state.Type: ApplicationFiled: December 5, 2008Publication date: January 13, 2011Inventors: Holger Rapp, Helmut Clauss, Friedrich Howey
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Publication number: 20080210787Abstract: Disclosed is a fuel injection device comprising a housing and a valve element disposed therein and cooperating with a valve seat located in the area of at least one fuel discharge port. The valve element is composed of several parts while at least two parts of the valve element are coupled to each other via a hydraulic coupler.Type: ApplicationFiled: May 31, 2006Publication date: September 4, 2008Inventors: Juergen Hanneke, Nadja Eisenmenger, Achim Brenk, Lorenz Zerle, Michael Mennicken, Helmut Clauss, Hans-Christoph Magel, Dirk Vahle, Andreas Kellner, Hrvoje Lalic, Joachim Boltz, Falko Bredow, Martin Katz
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Patent number: 6626151Abstract: A fuel injection system for internal combustion engines, has a distributor tube and a high-pressure pump which is driven as a function of engine rpm and serves to generate the fuel pressure and fuel throughput required in the distributor tube in the applicable operating state of the engine, and also has a fuel metering unit, which is assigned to the high-pressure pump and is based on an electromagnetically actuated regulating valve. The fuel metering unit is disposed in the high-pressure pump, and the outlet of the regulating value discharges into the low-pressure region of the high-pressure pump. The inlet of the regulating valve communicates with the compression side of a prefeed pump. The regulating valve has a valve piston, which is actuated—into the opening position—by a compression spring and which is actuatable counter to the spring force—into the closing position—by an armature bolt of the electromagnet.Type: GrantFiled: April 15, 2002Date of Patent: September 30, 2003Assignee: Robert Bosch GmbHInventors: Martin Boehm, Rainer Haeberer, Helmut Clauss, Felix Landhaeusser, Markus Rueckle
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Publication number: 20030116122Abstract: A fuel injection pump for internal combustion engines, in particular Diesel engines, having a pressure limiting valve which has a valve holder (10), a high-pressure connection (inlet bore 18), a return connection (outlet bore 22, 22a, 22b, 44, 45), a valve seat (20) oriented toward the inlet bore, an axially displaceable valve piston (15, 43), and a valve spring (25) urging the valve piston in the direction of the valve seat. The special feature is primarily that the pressure limiting valve is integrated directly with the fuel injection pump and is sealed off on the high-pressure side and low-pressure side (at 37 and 38, 39, respectively) from the pump body.Type: ApplicationFiled: September 30, 2002Publication date: June 26, 2003Inventors: Rainer Haeberer, Frieder Buerkle, Helmut Clauss, Markus Rueckle
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Publication number: 20020134355Abstract: A fuel injection system for internal combustion engines, has a distributor tube and a high-pressure pump which is driven as a function of engine rpm and serves to generate the fuel pressure and fuel throughput required in the distributor tube in the applicable operating state of the engine, and also has a fuel metering unit, which is assigned to the high-pressure pump and is based on an electromagnetically actuated regulating valve (11). The fuel metering unit (10, 11) is disposed in the high-pressure pump, the outlet (36) of the regulating valve (11) discharges into the low-pressure region of the high-pressure pump. The inlet (32, 34) of the regulating valve (11) communicates with the compression side of a prefeed pump. The regulating valve (11) has a valve piston (23), which is actuated—into the opening position—by a compression spring (25) and which is actuatable counter to the spring force—into the closing position—by an armature bolt (14) of the electromagnet (10).Type: ApplicationFiled: April 15, 2002Publication date: September 26, 2002Inventors: Martin Boehm, Rainer Haeberer, Helmut Clauss, Felix Landhaeusser, Markus Rueckle
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Patent number: 6446606Abstract: A fuel injection system for internal combustion engines, has a distributor tube and a high-pressure pump that is driven as a function of engine rpm and that serves to generate the fuel pressure and throughput required in the distributor tube in the applicable operating state of the engine. The system also includes a fuel metering unit, which is associated with the high-pressure pump and includes a regulating valve which is actuated electromagnetically. The fuel metering unit is disposed in the high-pressure pump, and the outlet of the regulating valve discharges into the low-pressure region of the high-pressure pump. The above design features make a fuel metering unit possible that is capable of metering the exact quantity of fuel desired in the applicable engine operating state to the high-pressure pump of the CR system.Type: GrantFiled: August 25, 2000Date of Patent: September 10, 2002Assignee: Robert Bosch GmbHInventors: Erwin Krimmer, Rainer Haeberer, Helmut Clauss, Tilman Miehle, Felix Laudaeusser, Markus Rueckle
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Patent number: 6422212Abstract: A fuel injection system has a low-pressure pump for withdrawing fuel from a tank and a high-pressure pump, which is supplied by the low-pressure pump and has camshaft-actuated pump elements. An on-off valve is connected on the inlet side to the pressure side of the low-pressure pump and on the outlet side, is connected on the one hand to a camshaft chamber of the high-pressure pump and on the other hand, is connected to the suction side of the low-pressure pump. At a first pressure threshold, a spring-loaded valve piston of the on-off valve opens a connection between the low-pressure pump and the camshaft chamber and at a relatively higher second pressure threshold, opens a connection between the pressure side and the suction side of the low-pressure pump. A throttle bore in the bottom of the valve piston serves to ventilate the low-pressure system.Type: GrantFiled: March 12, 2001Date of Patent: July 23, 2002Assignee: Robert Bosch GmbHInventors: Erhard Faix, Helmut Clauss, Rainer Lorenz, Gerd Loesch, Markus Rueckle
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Patent number: 6244253Abstract: A pressure control valve for a fuel injection apparatus for internal combustion engines, including a housing with a high-pressure connection and a return connection and including a cup-shaped piston, which is disposed in a housing bore, can be moved axially between a valve seat oriented toward the high-pressure connection and a stop oriented toward the return connection, counter to the spring force of a spring acting in the direction of the valve seat, and has at least one through opening that connects the inside of the cup-shaped piston to the housing bore, is characterized in that at least one throttle element is disposed upstream and/or downstream of the valve seat in the flow direction of the fuel.Type: GrantFiled: April 10, 2000Date of Patent: June 12, 2001Assignee: Robert Bosch GmbHInventors: Rainer Haeberer, Frieder Buerkle, Helmut Clauss, Markus Rueckle
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Patent number: 5937909Abstract: A throttle element for installation in a fuel carrying conduit, which is embodied as a screwed in insert with a head that constitutes an annular gap in relation to a cylindrical circumference wall of the conduit and this annular gap is disposed as a filter upstream of the throttle of the throttle element.Type: GrantFiled: June 11, 1998Date of Patent: August 17, 1999Assignee: Robert Bosch GmbHInventors: Helmut Clauss, Bernd Rosenau