Patents by Inventor Massimiliano Lazzerini
Massimiliano Lazzerini 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: 11852137Abstract: A variable mechanical lubricant pump provides a pressurized lubricant for an internal combustion engine. The lubricant pump includes a delivery port which is fluidically connected to the engine, a control ring which shifts between a maximum and a minimum eccentricity position, a pump rotor having slidable vanes which rotate in the control ring, a control ring preload spring which pushes the control ring into the maximum eccentricity position, a hydraulic control chamber which pushes the control ring into the minimum eccentricity position, a pressure galley pump port fluidically connected to the engine, and an overpressure valve fluidically associated with the delivery port. The pressure gallery pump port charges the hydraulic control chamber with a gallery pressure to control a remote gallery pressure of the engine via a control chamber pressure in the hydraulic control chamber. The overpressure valve opens if an applied lubricant pressure exceeds a predefined maximum pressure limit.Type: GrantFiled: March 5, 2018Date of Patent: December 26, 2023Assignee: PIERBURG PUMP TECHNOLOGY GMBHInventors: Carmine Cuneo, Massimiliano Lazzerini
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Patent number: 11698071Abstract: A variable displacement lubricant pump includes a housing, a control ring arranged in the housing, an inlet chamber and an outlet chamber, and a lateral slide bearing. The control ring is shiftable, radially confines a pumping chamber, and comprises a drainage channel. The outlet chamber and the inlet chamber are arranged at opposite lateral sides of the control ring. The lateral slide bearing is arranged at the lateral side of the control ring where the outlet chamber is arranged and comprises a first lateral slide bearing surface defined by the static housing, a second lateral slide bearing surface arranged opposite to the first lateral slide bearing surface which is defined by the control ring, and a lateral slide bearing gap defined between the first and second lateral slide bearing surfaces. The drainage channel of the control ring fluidically connects the lateral slide bearing gap with the inlet chamber.Type: GrantFiled: May 29, 2019Date of Patent: July 11, 2023Assignee: PIERBURG PUMP TECHNOLOGY GMBHInventors: Massimiliano Lazzerini, Carmine Cuneo, Fabio Guglielmo, Vincenzo Zaccuri
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Publication number: 20220307497Abstract: A variable displacement lubricant pump for providing a pressurized lubricant for a motor vehicle. The pump includes a pump rotor which rotates about a rotor axis and a control ring which is shiftable. The pump rotor includes a pump rotor shaft, a rotor body having vane slits, and pump vanes which are arranged in and which axially slide in the vane slits. The control ring can be actuated to set an eccentricity of the control ring to define a volumetric pump performance. The control ring defines a pump chamber which is separated by the pump vanes into pumping compartments. The control ring includes a control ring main body, bushing rings which are arranged separately at a radial inside of the control ring main body, and a radial inlet opening and/or a radial outlet opening. The radial inlet opening and/or the radial outlet opening is/are arranged axially between the bushing rings.Type: ApplicationFiled: May 23, 2019Publication date: September 29, 2022Applicant: PIERBURG PUMP TECHNOLOGY GMBHInventors: MASSIMILIANO LAZZERINI, CARMINE CUNEO, ALESSANDRO MALVASI
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Publication number: 20220235766Abstract: A lubricant pump includes a housing having a shiftable control ring which radially confines a pumping chamber, an outlet chamber, a rotor, a pumping chamber pressure section, and a slide bearing. An interface between the outlet chamber and the control ring defines an outside pressure surface of the control ring. An interface between the pumping chamber pressure section and the control ring defines an inside pressure surface of the control ring. The slide bearing supports the control ring within the housing and includes a first slide bearing surface defined by the housing and which extends in a slide plane, and a second slide bearing surface defined by the control ring. An outside projection area defined by an orthographic projection of the outside pressure surface onto the slide plane is smaller than a maximum inside projection area defined by an orthographic projection of the inside pressure surface onto the slide plane.Type: ApplicationFiled: May 23, 2019Publication date: July 28, 2022Applicant: PIERBURG PUMP TECHNOLOGY GMBHInventors: MASSIMILIANO LAZZERINI, CARMINE CUNEO, FABIO GUGLIELMO, FABIO FALOMI
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Patent number: 11396811Abstract: A vane pump for providing a pressurized lubricant includes a static pump housing defining an inlet and an outlet, a shiftable control ring with at least one slide support surface, a pump rotor with rotor vanes which rotate within the control ring, and metal slide support pad(s). The control ring shifts with respect to the pump rotor to vary an eccentricity and to thereby control a volumetric pump performance. The pump housing comprises a static control ring housing body which radially surrounds and supports the control ring, and two static pump housing lids which axially support the control ring housing body and the control ring. The control ring housing body is made of plastic. The metal slide support pad(s) is fixed to the static control ring housing body and, together with the at least one slide support surface, provides a friction bearing for the control ring.Type: GrantFiled: December 13, 2017Date of Patent: July 26, 2022Assignee: PIERBURG PUMP TECHNOLOGY GMBHInventor: Massimiliano Lazzerini
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Publication number: 20220228588Abstract: A variable displacement lubricant pump includes a housing, a control ring arranged in the housing, an inlet chamber and an outlet chamber, and a lateral slide bearing. The control ring is shiftable, radially confines a pumping chamber, and comprises a drainage channel. The outlet chamber and the inlet chamber are arranged at opposite lateral sides of the control ring. The lateral slide bearing is arranged at the lateral side of the control ring where the outlet chamber is arranged and comprises a first lateral slide bearing surface defined by the static housing, a second lateral slide bearing surface arranged opposite to the first lateral slide bearing surface which is defined by the control ring, and a lateral slide bearing gap defined between the first and second lateral slide bearing surfaces. The drainage channel of the control ring fluidically connects the lateral slide bearing gap with the inlet chamber.Type: ApplicationFiled: May 29, 2019Publication date: July 21, 2022Applicant: PIERBURG PUMP TECHNOLOGY GMBHInventors: MASSIMILIANO LAZZERINI, CARMINE CUNEO, FABIO GUGLIELMO, VINCENZO ZACCURI
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Publication number: 20200400142Abstract: A variable mechanical lubricant pump provides a pressurized lubricant for an internal combustion engine. The lubricant pump includes a delivery port which is fluidically connected to the engine, a control ring which shifts between a maximum and a minimum eccentricity position, a pump rotor having slidable vanes which rotate in the control ring, a control ring preload spring which pushes the control ring into the maximum eccentricity position, a hydraulic control chamber which pushes the control ring into the minimum eccentricity position, a pressure galley pump port fluidically connected to the engine, and an overpressure valve fluidically associated with the delivery port. The pressure gallery pump port charges the hydraulic control chamber with a gallery pressure to control a remote gallery pressure of the engine via a control chamber pressure in the hydraulic control chamber. The overpressure valve opens if an applied lubricant pressure exceeds a predefined maximum pressure limit.Type: ApplicationFiled: March 5, 2018Publication date: December 24, 2020Applicant: PIERBURG PUMP TECHNOLOGY GMBHInventors: CARMINE CUNEO, MASSIMILIANO LAZZERINI
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Publication number: 20200300092Abstract: A vane pump for providing a pressurized lubricant includes a static pump housing defining an inlet and an outlet, a shiftable control ring with at least one slide support surface, a pump rotor with rotor vanes which rotate within the control ring, and metal slide support pad(s). The control ring shifts with respect to the pump rotor to vary an eccentricity and to thereby control a volumetric pump performance. The pump housing comprises a static control ring housing body which radially surrounds and supports the control ring, and two static pump housing lids which axially support the control ring housing body and the control ring. The control ring housing body is made of plastic. The metal slide support pad(s) is fixed to the static control ring housing body and, together with the at least one slide support surface, provides a friction bearing for the control ring.Type: ApplicationFiled: December 13, 2017Publication date: September 24, 2020Applicant: PIERBURG PUMP TECHNOLOGY GMBHInventor: MASSIMILIANO LAZZERINI
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Patent number: 9759103Abstract: A lubricant vane pump for providing a pressurized lubricant for an internal combustion engine includes a pump housing, a pump chamber, a shiftable control ring comprising a pressure-relief-valve, a pump rotor, a pretensioning element which pushes the control ring into a high pumping volume position, a control chamber, and a pump outlet cavity fluidically connected to the control chamber. The pump chamber comprises pump compartments which rotate from a charge to discharge zone. The control ring envelops the pump chamber. The pump rotor comprises radially slidable vanes which rotate in the control ring to provide the pump chamber with the pump compartments. A high lubricant pressure in the control chamber moves the control ring into a low pumping volume direction against the pretensioning element. The pressure-relief-valve of the control ring connects or disconnects the control chamber with one of the pump compartments between the charge zone and the discharge zone.Type: GrantFiled: March 18, 2013Date of Patent: September 12, 2017Assignee: PIERBURG PUMP TECHNOLOGY GMBHInventors: Giacomo Armenio, Nicola Novi, Massimiliano Lazzerini
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Publication number: 20160290335Abstract: A variable displacement lubricant pump includes a control ring, a pump rotor with radially-slidable vanes which rotate in the control ring, and a pressure control system to control a lubricant discharge pressure. The pressure control system includes a pressure control chamber which pushes the control ring into a high pumping volume direction, a pilot chamber which pushes the control ring into a low pumping volume direction, and a pressure control valve which controls a pressure in the pressure control chamber. The pressure control valve comprises a control port connected to the pressure control chamber, a control valve body which connects/disconnects the control port to atmospheric pressure, first and second valve chambers arranged at opposite ends of the control valve body, and a fluidic valve control line comprising a discharge valve which discharges the lubricant from the second valve chamber to atmospheric pressure.Type: ApplicationFiled: November 21, 2013Publication date: October 6, 2016Applicant: PIERBURG PUMP TECHNOLOGY GMBHInventors: CARMINE CUNEO, GIACOMO ARMENIO, MASSIMILIANO LAZZERINI
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Publication number: 20160047280Abstract: A lubricant vane pump for providing a pressurized lubricant for an internal combustion engine includes a pump housing, a pump chamber, a shiftable control ring comprising a pressure-relief-valve, a pump rotor, a pretensioning element which pushes the control ring into a high pumping volume position, a control chamber, and a pump outlet cavity fluidically connected to the control chamber. The pump chamber comprises pump compartments which rotate from a charge to discharge zone. The control ring envelops the pump chamber. The pump rotor comprises radially slidable vanes which rotate in the control ring to provide the pump chamber with the pump compartments. A high lubricant pressure in the control chamber moves the control ring into a low pumping volume direction against the pretensioning element. The pressure-relief-valve of the control ring connects or disconnects the control chamber with one of the pump compartments between the charge zone and the discharge zone.Type: ApplicationFiled: March 18, 2013Publication date: February 18, 2016Inventors: Giacomo Armenio, Nicola Novi, Massimiliano Lazzerini
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Patent number: 9017049Abstract: A variable displacement lubricant pump for providing a pressurized lubricant for an internal combustion engine includes a shiftable control ring. The control ring comprises a plurality of pump chambers and a pressure relief valve. The plurality of pump chambers rotate through a charge zone and a discharge zone. A pump rotor comprises radially slidable vanes. The pump rotor rotates in the control ring. A pretensioning element pushes the control ring to a high pumping volume direction. A first control chamber pushes the control ring to a low pumping volume direction. A second control chamber pushes the control ring to the high pumping volume direction. A pump outlet is connected to the first control chamber. A throttle valve connects the first control chamber with the second control chamber. The pressure relief valve of the control ring connects the discharge zone to the second control chamber.Type: GrantFiled: May 28, 2010Date of Patent: April 28, 2015Assignee: Pierburg Pump Technology GmbHInventors: Matteo Gasperini, Stefano Fiorini, Massimiliano Lazzerini, Raffaele Squarcini
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Patent number: 8469683Abstract: A variable-displacement oil pump wherein between a projection of a mobile ring and a corresponding driving chamber and between a protrusion (again of the mobile ring) and a corresponding guiding seat, respectively, there are placed corresponding devices adapted to decrease the effects of the friction between the projections on the mobile ring and the corresponding seats obtained on a main body of the pump itself.Type: GrantFiled: November 28, 2007Date of Patent: June 25, 2013Assignee: Pierburg Pump Technology Italy S.p.A.Inventors: Giacomo Armenio, Massimiliano Lazzerini, Nicola Novi, Raffaele Squarcini
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Publication number: 20130071275Abstract: A variable displacement lubricant pump for providing a pressurized lubricant for an internal combustion engine includes a shiftable control ring. The control ring comprises a plurality of pump chambers and a pressure relief valve. The plurality of pump chambers rotate through a charge zone and a discharge zone. A pump rotor comprises radially slidable vanes. The pump rotor rotates in the control ring. A pretensioning element pushes the control ring to a high pumping volume direction. A first control chamber pushes the control ring to a low pumping volume direction. A second control chamber pushes the control ring to the high pumping volume direction. A pump outlet is connected to the first control chamber. A throttle valve connects the first control chamber with the second control chamber. The pressure relief valve of the control ring connects the discharge zone to the second control chamber.Type: ApplicationFiled: May 28, 2010Publication date: March 21, 2013Applicant: PIERBURG PUMP TECHNOLOGY GMBHInventors: Matteo Gasperini, Stefano Fiorini, Massimiliano Lazzerini, Raffaele Squarcini
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Publication number: 20100135835Abstract: A variable-displacement oil pump wherein between a projection of a mobile ring and a corresponding driving chamber and between a protrusion (again of the mobile ring) and a corresponding guiding seat, respectively, there are placed corresponding devices adapted to decrease the effects of the friction between the projections on the mobile ring and the corresponding seats obtained on a main body of the pump itself.Type: ApplicationFiled: November 28, 2007Publication date: June 3, 2010Inventors: Giacomo Armenio, Massimiliano Lazzerini, Nicola Novi, Raffaele Squarcini