Patents by Inventor Enrico Ulivieri
Enrico Ulivieri 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).
-
Patent number: 7886993Abstract: An injection valve for injecting fuel comprises a valve housing (1) inside of which a drive unit (15) controls the movement of a valve needle (5) that is pretensioned by a spring (11). The injection valve also comprises a main chamber (27), which is provided inside the valve housing, is filled with fuel and accommodates the valve needle (5), and comprises a hydraulic bearing for the drive unit (15). The hydraulic bearing has a hydraulic chamber (29) that is connected to the main chamber (27), whereby fuel serves as the operating substance of the hydraulic bearing.Type: GrantFiled: August 23, 2004Date of Patent: February 15, 2011Assignee: Siemens AktiengesellschaftInventors: Georg Bachmaier, Bernhard Fischer, Bernhard Gottlieb, Andreas Kappel, Hans Meixner, Enrico Ulivieri
-
Patent number: 7309032Abstract: An actuator (4) is connected, on one side, to a valve needle (3), and on the opposite side, to a hydraulic piston (6) pertaining to a hydraulic length compensator. A working chamber (5) is divided by a tight separating membrane (9), into an actuator chamber (10) containing the actuator (4) and a fluid chamber (11) which can be filled with the fluid to be dosed in a pressurized manner while the actuator chamber (10) and the hydraulic chamber (7) are filled with a hydraulic fluid. A base pressure can be produced in the hydraulic fluid by means of the pressure of the fluid to be dosed, which is transmitted through the separating membrane (9).Type: GrantFiled: October 18, 2004Date of Patent: December 18, 2007Assignee: Siemens AktiengesellschaftInventors: Bernhard Fischer, Bernhard Gottlieb, Andreas Kappel, Enrico Ulivieri
-
Patent number: 7195182Abstract: A dosing device comprises a housing (1) provided with an actuator, a dosing opening (8), a guiding shaft (6) which surrounds part of the valve needle (7) and forms a valve chamber (10) with the same, and a fluid chamber module (4) which is welded to the housing (1) in the form of a duct for guiding the valve needle (7) into the housing (9). The fluid chamber module (4) and the housing (1) are assembled along a separation surface (13) which is subjected to pressure by the dosing liquid and is formed almost only by axial cylinder wall surface parts (13) in order to reduce the pressure load on the weld seam (13).Type: GrantFiled: December 3, 2004Date of Patent: March 27, 2007Assignee: Siemens AktiengesellschaftInventors: Bernhard Fischer, Bernhard Gottlieb, Andreas Kappel, Enrico Ulivieri
-
Patent number: 7044407Abstract: A fluid dosing device for a pressurized liquid is disclosed, which comprises a chamber (35) which is supplied with pressurized liquid by means of a liquid supply line (17, 19); a valve needle (9) which is guided through the chamber (35), the first end section of said valve needle being able to be lifted and the second end section thereof forming a valve in conjunction with a valve seat disposed on the housing (3). Metal bellows (33) are provided as a leadthrough element for the first end section of the valve needle (9). The metal bellows seal the chamber in said region in a tight manner. A throttle point (37, 39) is provided between the valve needle (9) and the inner wall of the chamber between the metal bellows (33) and the mouth (18) of the liquid supply line (17) leading into the chamber.Type: GrantFiled: May 2, 2003Date of Patent: May 16, 2006Assignee: Siemens AktiengesellschaftInventors: Bernhard Fischer, Bernhard Gottlieb, Andreas Kappel, Randolf Mock, Enrico Ulivieri
-
Publication number: 20050103587Abstract: An actuator (4) is connected, on one side, to a valve needle (3), and on the opposite side, to a hydraulic piston (6) pertaining to a hydraulic length compensator. A working chamber (5) is divided by a tight separating membrane (9), into an actuator chamber (10) containing the actuator (4) and a fluid chamber (11) which can be filled with the fluid to be dosed in a pressurized manner while the actuator chamber (10) and the hydraulic chamber (7) are filled with a hydraulic fluid. A base pressure can be produced in the hydraulic fluid by means of the pressure of the fluid to be dosed, which is transmitted through the separating membrane (9).Type: ApplicationFiled: October 18, 2004Publication date: May 19, 2005Inventors: Bernhard Fischer, Bernhard Gottlieb, Andreas Kappel, Enrico Ulivieri
-
Publication number: 20050082380Abstract: A dosing device comprises a housing (1) provided with an actuator, a dosing opening (8), a guiding shaft (6) which surrounds part of the valve needle (7) and forms a valve chamber (10) with the same, and a fluid chamber module (4) which is welded to the housing (1) in the form of a duct for guiding the valve needle (7) into the housing (9). The fluid chamber module (4) and the housing (1) are assembled along a separation surface (13) which is subjected to pressure by the dosing liquid and is formed almost only by axial cylinder wall surface parts (13) in order to reduce the pressure load on the weld seam (13).Type: ApplicationFiled: December 3, 2004Publication date: April 21, 2005Inventors: Bernhard Fischer, Bernhard Gottlieb, Andreas Kappel, Enrico Ulivieri
-
Patent number: 6853114Abstract: A converter mounting comprises a memory coil inductance (8), a memory primary capacitor (3) mounted upstream of said coil inductance, and a memory secondary capacitor (4), in particular, a piezoelectric actuator, mounted downstream of said coil inductance. Through control of a primary circuit element (12) and of a secondary circuit element (14), the energy of the memory primary capacitor (3) can be transferred to the memory secondary capacitor (4) and recovered.Type: GrantFiled: March 25, 2004Date of Patent: February 8, 2005Assignee: Siemens AktiengesellschaftInventors: Georg Bachmaier, Bernhard Fischer, Andreas Kappel, Enrico Ulivieri
-
Publication number: 20050017096Abstract: An injection valve for injecting fuel comprises a valve housing (1) inside of which a drive unit (15) controls the movement of a valve needle (5) that is pretensioned by a spring (11). The injection valve also comprises a main chamber (27), which is provided inside the valve housing, is filled with fuel and accommodates the valve needle (5), and comprises a hydraulic bearing for the drive unit (15). The hydraulic bearing has a hydraulic chamber (29) that is connected to the main chamber (27), whereby fuel serves as the operating substance of the hydraulic bearing.Type: ApplicationFiled: August 23, 2004Publication date: January 27, 2005Inventors: Georg Bachmaier, Bernhard Fischer, Bernhard Gottlieb, Andreas Kappel, Hans Meixner, Enrico Ulivieri
-
Publication number: 20040184291Abstract: A converter mounting comprises a memory coil inductance (8), a memory primary capacitor (3) mounted upstream of said coil inductance, and a memory secondary capacitor (4), in particular, a piezoelectric actuator, mounted downstream of said coil inductance. Through control of a primary circuit element (12) and of a secondary circuit element (14), the energy of the memory primary capacitor (3) can be transferred to the memory secondary capacitor (4) and recovered.Type: ApplicationFiled: March 25, 2004Publication date: September 23, 2004Inventors: Georg Bachmaier, Bernhard Fischer, Andreas Kappel, Enrico Ulivieri
-
Patent number: 6755353Abstract: A fuel injector comprises a body having a longitudinal axis, a length-changing solid state actuator that has first and second ends, a closure member coupled to the first end of the solid state actuator, and a compensator assembly coupled the second end of the solid state actuator. The solid state actuator includes a plurality of solid state elements along the axis between the first and second ends. The closure member is movable between a first configuration permitting fuel injection and a second configuration preventing fuel injection. And the compensator assembly axially positions the solid state actuator with respect to the body in response to temperature variation. The compensator assembly utilizes a configuration of at least one spring disposed between two pistons so as to reduce the use of elastomer seals to thereby reduce a slip stick effect.Type: GrantFiled: October 11, 2001Date of Patent: June 29, 2004Assignee: Siemens Automotive CorporationInventors: Jack Lorraine, Andreas Kappel, Enrico Ulivieri, Bernhard Gottlieb, Bernhard Fischer
-
Patent number: 6739528Abstract: A fuel injector comprises a body having a longitudinal axis, a length-changing actuator that has first and second ends, a closure member coupled to the first end of the length-changing actuator, and a compensator assembly coupled the second end of the actuator. The length-changing actuator includes first and second ends. The closure member is movable between a first configuration permitting fuel injection and a second configuration preventing fuel injection. And the compensator assembly axially positions the actuator with respect to the body in response to temperature variation. The compensator assembly utilizes a configuration of at least one spring disposed between two pistons so as to reduce the-use of elastomer seals to thereby reduce a slip stick effect. Also, a method of compensating for thermal expansion or contraction of the fuel injector comprises providing fuel from a fuel supply to the fuel injector; and adjusting the actuator with respect to the body in response to temperature variation.Type: GrantFiled: October 11, 2001Date of Patent: May 25, 2004Assignee: Siemens Automotive CorporationInventors: Jack Lorraine, Andreas Kappel, Enrico Ulivieri, Bernhard Gottlieb, Bernhard Fischer
-
Patent number: 6676035Abstract: A fuel injector comprises a body having a longitudinal axis, an length-changing actuator that has first and second ends, a closure member coupled to the first end of the length-changing actuator, and a compensator assembly coupled the second end of the actuator. The length-changing actuator includes first and second ends. The closure member is movable between a first configuration permitting fuel injection and a second configuration preventing fuel injection. And the compensator assembly axially positions the actuator with respect to the body in response to temperature variation. The compensator assembly utilizes a configuration of at least one spring disposed between two pistons so as to reduce the use of elastomer seals to thereby reduce a slip stick effect.Type: GrantFiled: October 11, 2001Date of Patent: January 13, 2004Assignee: Siemens Automotive CorporationInventors: Jack Lorraine, Andreas Kappel, Enrico Ulivieri, Bernhard Gottlieb, Bernhard Fischer
-
Patent number: 6676030Abstract: A fuel injector comprises a body having a longitudinal axis, a length-changing actuator that has first and second ends, a closure member coupled to the first end of the length-changing actuator, and a compensator assembly coupled the second end of the actuator. The length-changing actuator includes first and second ends. The closure member is movable between a first configuration permitting fuel injection and a second configuration preventing fuel injection. And the compensator assembly axially positions the actuator with respect to the body in response to temperature variation. The compensator assembly utilizes a configuration of at least one spring disposed between two pistons so as to reduce the use of elastomer seals to thereby reduce a slip stick effect. Also, a method of compensating for thermal expansion or contraction of the fuel injector comprises providing fuel from a fuel supply to the fuel injector; and adjusting the actuator with respect to the body in response to temperature variation.Type: GrantFiled: October 11, 2001Date of Patent: January 13, 2004Assignee: Siemens Automotive CorporationInventors: Jack Lorraine, Andreas Kappel, Enrico Ulivieri, Bernhard Gottlieb, Bernhard Fischer
-
Publication number: 20040004139Abstract: A fluid dosing device for a pressurized liquid is disclosed, which comprises a chamber (35) which is supplied with pressurized liquid by means of a liquid supply line (17, 19); a valve needle (9) which is guided through the chamber (35), the first end section of said valve needle being able to be lifted and the second end section thereof forming a valve in conjunction with a valve seat disposed on the housing (3). Metal bellows (33) are provided as a leadthrough element for the first end section of the valve needle (9). The metal bellows seal the chamber in said region in a tight manner. A throttle point (37, 39) is provided between the valve needle (9) and the inner wall of the chamber between the metal bellows (33) and the mouth (18) of the liquid supply line (17) leading into the chamber.Type: ApplicationFiled: May 2, 2003Publication date: January 8, 2004Inventors: Bernhard Fischer, Bernhard Gottlieb, Andreas Kappel, Randolf Mock, Enrico Ulivieri
-
Publication number: 20020139864Abstract: A fuel injector comprises a body having a longitudinal axis, an length-changing actuator that has first and second ends, a closure member coupled to the first end of the length-changing actuator, and a compensator assembly coupled the second end of the actuator. The length-changing actuator includes first and second ends. The closure member is movable between a first configuration permitting fuel injection and a second configuration preventing fuel injection. And the compensator assembly axially positions the actuator with respect to the body in response to temperature variation. The compensator assembly utilizes a configuration of at least one spring disposed between two pistons so as to reduce the use of elastomer seals to thereby reduce a slip stick effect.Type: ApplicationFiled: October 11, 2001Publication date: October 3, 2002Inventors: Jack Lorraine, Andreas Kappel, Enrico Ulivieri, Bernhard Gottlieb, Bernhard Fischer
-
Publication number: 20020139863Abstract: A fuel injector comprises a body having a longitudinal axis, a length-changing actuator that has first and second ends, a closure member coupled to the first end of the length-changing actuator, and a compensator assembly coupled the second end of the actuator. The length-changing actuator includes first and second ends. The closure member is movable between a first configuration permitting fuel injection and a second configuration preventing fuel injection. And the compensator assembly axially positions the actuator with respect to the body in response to temperature variation. The compensator assembly utilizes a configuration of at least one spring disposed between two pistons so as to reduce the use of elastomer seals to thereby reduce a slip stick effect. Also, a method of compensating for thermal expansion or contraction of the fuel injector comprises providing fuel from a fuel supply to the fuel injector; and adjusting the actuator with respect to the body in response to temperature variation.Type: ApplicationFiled: October 11, 2001Publication date: October 3, 2002Inventors: Jack Lorraine, Andreas Kappel, Enrico Ulivieri, Bernhard Gottlieb, Bernhard Fischer
-
Publication number: 20020134851Abstract: A fuel injector comprises a body having a longitudinal axis, a length-changing solid state actuator that has first and second ends, a closure member coupled to the first end of the solid state actuator, and a compensator assembly coupled the second end of the solid state actuator. The solid state actuator includes a plurality of solid state elements along the axis between the first and second ends. The closure member is movable between a first configuration permitting fuel injection and a second configuration preventing fuel injection. And the compensator assembly axially positions the solid state actuator with respect to the body in response to temperature variation. The compensator assembly utilizes a configuration of at least one spring disposed between two pistons so as to reduce the use of elastomer seals to thereby reduce a slip stick effect.Type: ApplicationFiled: October 11, 2001Publication date: September 26, 2002Inventors: Jack Lorraine, Andreas Kappel, Enrico Ulivieri, Bernhard Gottlieb, Bernhard Fischer
-
Publication number: 20020134855Abstract: A fuel injector comprises a body having a longitudinal axis, a length-changing actuator that has first and second ends, a closure member coupled to the first end of the length-changing actuator, and a compensator assembly coupled the second end of the actuator. The length-changing actuator includes first and second ends. The closure member is movable between a first configuration permitting fuel injection and a second configuration preventing fuel injection. And the compensator assembly axially positions the actuator with respect to the body in response to temperature variation. The compensator assembly utilizes a configuration of at least one spring disposed between two pistons so as to reduce the use of elastomer seals to thereby reduce a slip stick effect. Also, a method of compensating for thermal expansion or contraction of the fuel injector comprises providing fuel from a fuel supply to the fuel injector; and adjusting the actuator with respect to the body in response to temperature variation.Type: ApplicationFiled: October 11, 2001Publication date: September 26, 2002Inventors: Jack Lorraine, Andreas Kappel, Enrico Ulivieri, Bernhard Gottlieb, Bernhard Fischer
-
Patent number: 6441536Abstract: A wobble motor has at least one shaft guided in a rotatably and axially displaceable fashion, and at least one drive ring which surrounds the shaft and can be tilted with respect to a longitudinal axis of the shaft. The at least one guide ring can be displaced in a frictionally locked fashion and free from rotation.Type: GrantFiled: April 6, 2001Date of Patent: August 27, 2002Assignee: Siemens AktiengesellschaftInventors: Bernhard Fischer, Andreas Kappel, Enrico Ulivieri, Bernhard Gottlieb, Randolf Mock
-
Publication number: 20010038258Abstract: A wobble motor has at least one shaft guided in a rotatably and axially displaceable fashion, and at least one drive ring which surrounds the shaft and can be tilted with respect to a longitudinal axis of the shaft. The at least one guide ring can be displaced in a frictionally locked fashion and free from rotation.Type: ApplicationFiled: April 6, 2001Publication date: November 8, 2001Inventors: Bernhard Fischer, Andreas Kappel, Enrico Ulivieri, Bernhard Gottlieb, Randolf Mock