Patents by Inventor Arup Kumar Gangopadhyay
Arup Kumar Gangopadhyay 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: 11597273Abstract: An automotive axle includes a housing including gears and a bath lubricating the gears, the bath including gear oil and about 0.1 to 5 wt. % secondary alcohol ethoxylate based on total weight of the bath such that during automotive operation at temperatures less than a threshold, reverse micelles form to trap air bubbles in the bath, emulsifying the bath, and at temperatures greater than the threshold, the reverse micelles dissipate.Type: GrantFiled: January 8, 2019Date of Patent: March 7, 2023Assignee: Ford Global Technologies, LLCInventors: Hiroko Ohtani, Kevin Richard John Ellwood, David Karl Bidner, Arup Kumar Gangopadhyay, Mathew John Fast, Phillip Bonkoski
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Patent number: 11274626Abstract: Methods and systems are provided for a bore. In one example, a system includes a bore portion for receiving a reciprocating piston, the bore portion having first and second ends between which the piston travels in an axial direction. The bore portion comprises a plurality of recesses, axially spaced apart, and formed in a piston facing surface of the bore portion at a plurality of axial positions, with at least one recess being provided at each axial position. Widths of the plurality of recesses decrease in the axial direction away from a mid-stroke position toward the first and second ends, and depths of the plurality of recesses increase in the axial direction away from the mid-stroke position toward the first and second ends.Type: GrantFiled: September 25, 2019Date of Patent: March 15, 2022Assignee: Ford Global Technologies, LLCInventors: Khizer Tufail, Arup Kumar Gangopadhyay, David Skipp, Thomas Reddyhoff, Sorin-Cristian Vladescu, Roland Paul Stark
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Patent number: 10907569Abstract: Methods and systems are provided for filling surface pores of a cylinder inner surface coating with one or more fill materials to provide desired material and performance properties. In one example, a cylinder for an engine includes an inner surface including a coating having a plurality of surface pores, at least a portion of the plurality of surface pores filled with one or more fill materials, the one or more fill materials configured to decrease friction, increase tribofilm formation, adjust heat transfer, decrease material deposit, and/or decrease run-in duration.Type: GrantFiled: June 19, 2019Date of Patent: February 2, 2021Assignee: Ford Global Technologies, LLCInventors: Larry Dean Elie, Hamed Ghaednia, Clifford E. Maki, Timothy George Beyer, Arup Kumar Gangopadhyay, James Maurice Boileau
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Publication number: 20200400093Abstract: Methods and systems are provided for filling surface pores of a cylinder inner surface coating with one or more fill materials to provide desired material and performance properties. In one example, a cylinder for an engine includes an inner surface including a coating having a plurality of surface pores, at least a portion of the plurality of surface pores filled with one or more fill materials, the one or more fill materials configured to decrease friction, increase tribofilm formation, adjust heat transfer, decrease material deposit, and/or decrease run-in duration.Type: ApplicationFiled: June 19, 2019Publication date: December 24, 2020Inventors: Larry Dean Elie, Hamed Ghaednia, Clifford E. Maki, Timothy George Beyer, Arup Kumar Gangopadhyay, James Maurice Boileau
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Patent number: 10746128Abstract: Engine blocks and methods of forming the same are disclosed. The engine block may comprise a body including at least one cylindrical engine bore wall having a longitudinal axis and including a coating extending along the longitudinal axis and having a coating thickness. The coating may have a middle region and first and second end regions, and a plurality of pores may be dispersed within the coating thickness. The middle region may have a different average porosity than one or both of the end regions. The method may include spraying a first porosity coating in a middle longitudinal region of the bore and spraying a second porosity coating in one or more end regions of the bore. The first porosity may be greater than the second porosity and the first and second porosities may be formed during the spraying steps. The pores may act as wells for lubricant.Type: GrantFiled: November 18, 2019Date of Patent: August 18, 2020Assignee: Ford Motor CompanyInventors: Clifford E Maki, Larry Dean Elie, Timothy George Beyer, Arup Kumar Gangopadhyay, Hamed Ghaednia, James Maurice Boileau
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Publication number: 20200215905Abstract: An automotive axle includes a housing including gears and a bath lubricating the gears, the bath including gear oil and about 0.1 to 5 wt. % secondary alcohol ethoxylate based on total weight of the bath such that during automotive operation at temperatures less than a threshold, reverse micelles form to trap air bubbles in the bath, emulsifying the bath, and at temperatures greater than the threshold, the reverse micelles dissipate.Type: ApplicationFiled: January 8, 2019Publication date: July 9, 2020Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Hiroko OHTANI, Kevin Richard John ELLWOOD, David Karl BIDNER, Arup Kumar GANGOPADHYAY, Mathew John FAST, Phillip BONKOSKI
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Publication number: 20200102906Abstract: Engine blocks and methods of forming the same are disclosed. The engine block may comprise a body including at least one cylindrical engine bore wall having a longitudinal axis and including a coating extending along the longitudinal axis and having a coating thickness. The coating may have a middle region and first and second end regions, and a plurality of pores may be dispersed within the coating thickness. The middle region may have a different average porosity than one or both of the end regions. The method may include spraying a first porosity coating in a middle longitudinal region of the bore and spraying a second porosity coating in one or more end regions of the bore. The first porosity may be greater than the second porosity and the first and second porosities may be formed during the spraying steps. The pores may act as wells for lubricant.Type: ApplicationFiled: November 18, 2019Publication date: April 2, 2020Inventors: Clifford E MAKI, Larry Dean ELIE, Timothy George BEYER, Arup Kumar GANGOPADHYAY, Hamed GHAEDNIA, James Maurice BOILEAU
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Publication number: 20200095951Abstract: Methods and systems are provided for a bore. In one example, a system includes a bore portion for receiving a reciprocating piston, the bore portion having first and second ends between which the piston travels in an axial direction. The bore portion comprises a plurality of recesses, axially spaced apart, and formed in a piston facing surface of the bore portion at a plurality of axial positions, with at least one recess being provided at each axial position. Widths of the plurality of recesses decrease in the axial direction away from a mid-stroke position toward the first and second ends, and depths of the plurality of recesses increase in the axial direction away from the mid-stroke position toward the first and second ends.Type: ApplicationFiled: September 25, 2019Publication date: March 26, 2020Inventors: Khizer Tufail, Arup Kumar Gangopadhyay, David Skipp, Thomas Reddyhoff, Sorin-Cristian Vladescu, Roland Paul Stark
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Patent number: 10480448Abstract: Engine blocks and methods of forming the same are disclosed. The engine block may comprise a body including at least one cylindrical engine bore wall having a longitudinal axis and including a coating extending along the longitudinal axis and having a coating thickness. The coating may have a middle region and first and second end regions, and a plurality of pores may be dispersed within the coating thickness. The middle region may have a different average porosity than one or both of the end regions. The method may include spraying a first porosity coating in a middle longitudinal region of the bore and spraying a second porosity coating in one or more end regions of the bore. The first porosity may be greater than the second porosity and the first and second porosities may be formed during the spraying steps. The pores may act wells for lubricant.Type: GrantFiled: March 9, 2016Date of Patent: November 19, 2019Assignee: Ford Motor CompanyInventors: Clifford E. Maki, Larry Dean Elie, Timothy George Beyer, Arup Kumar Gangopadhyay, Hamed Ghaednia, James Maurice Boileau
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Patent number: 10267258Abstract: Methods of honing a surface are disclosed. The method may include spraying a coating having an initial average bulk porosity onto an engine bore wall and honing the coating to create an intermediate honed surface. The method may then include cleaning the intermediate honed surface and honing the intermediate honed surface with a cutting force of, for example, 110-130 kgf after the cleaning step. This may create a honed surface having an average porosity greater than the initial average bulk porosity. The methods may create a honed surface having a porosity that is more porous than the initially sprayed coating. The increased porosity of the honed surface may allow for increased oil retention in, for example, engine bores.Type: GrantFiled: December 5, 2016Date of Patent: April 23, 2019Assignee: Ford Global Technologies, LLCInventors: Clifford E. Maki, Timothy George Beyer, Arup Kumar Gangopadhyay, Hamed Ghaednia, Larry Dean Elie, James Maurice Boileau
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Publication number: 20180156155Abstract: Methods of honing a surface are disclosed. The method may include spraying a coating having an initial average bulk porosity onto an engine bore wall and honing the coating to create an intermediate honed surface. The method may then include cleaning the intermediate honed surface and honing the intermediate honed surface with a cutting force of, for example, 110-130 kgf after the cleaning step. This may create a honed surface having an average porosity greater than the initial average bulk porosity. The methods may create a honed surface having a porosity that is more porous than the initially sprayed coating. The increased porosity of the honed surface may allow for increased oil retention in, for example, engine bores.Type: ApplicationFiled: December 5, 2016Publication date: June 7, 2018Inventors: Clifford E. MAKI, Timothy George BEYER, Arup Kumar GANGOPADHYAY, Hamed GHAEDNIA, Larry Dean ELIE, James Maurice BOILEAU
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Publication number: 20170260926Abstract: Engine blocks and methods of forming the same are disclosed. The engine block may comprise a body including at least one cylindrical engine bore wall having a longitudinal axis and including a coating extending along the longitudinal axis and having a coating thickness. The coating may have a middle region and first and second end regions, and a plurality of pores may be dispersed within the coating thickness. The middle region may have a different average porosity than one or both of the end regions. The method may include spraying a first porosity coating in a middle longitudinal region of the bore and spraying a second porosity coating in one or more end regions of the bore. The first porosity may be greater than the second porosity and the first and second porosities may be formed during the spraying steps. The pores may act wells for lubricant.Type: ApplicationFiled: March 9, 2016Publication date: September 14, 2017Inventors: CLIFFORD E. MAKI, LARRY DEAN ELIE, TIMOTHY GEORGE BEYER, ARUP KUMAR GANGOPADHYAY, HAMED GHAEDNIA, JAMES MAURICE BOILEAU
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Patent number: 6485630Abstract: A method of reducing cutting tool wear in a lubricated metal cutting operation has been developed. An electrical cutting cell is provided having an anodic conductive cutting tool and a cathodic conductive work-piece connected to a DC current supply; the lubricant contains platable wear reducing agents. The lubricant is located to bathe the contacting interface between the cutting tool and work-piece to constitute an electrolyte. Next, the electrical current flow through the contacting interface is controlled to be in the range of 25-500 milli-amps. Lastly, the cutting tool is moved into and along cutting contact with the work-piece while current flows there-between to electro-chemically deposit the wear reducing agents on at least the contacting interface to reduce cutting tool wear and improve ease of mass removal.Type: GrantFiled: August 2, 2000Date of Patent: November 26, 2002Assignee: Ford Global Technologies, Inc.Inventors: Arup Kumar Gangopadhyay, Gary C. Barber, Han Zhao
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Patent number: 6050881Abstract: Method of surface finishing covalent-ionic ceramics comprising: (a) repeatedly rubbing a finishing medium against an exposed surface of the ceramic, the medium being constituted of an ionic bonded oxide having grains harder than the grains of the covalent-ionic bonded ceramic; (b) interrupting the rubbing at frequent intervals to dress the medium by a single point diamond tool; and (c) continuing the repeated rubbing and dressing interruptions of steps (a) and (b) until a surface roughness of about 0.04 micrometer Ra has been achieved on the ceramic and the exposed surface of the ceramic retains an ionic residue of the finishing medium. Also, a method of effecting reduced friction between lubricated rubbing surfaces, comprising: (a) forming one of the rubbing surfaces of silicon nitride based ceramics having a polished surface roughness about 0.Type: GrantFiled: July 27, 1998Date of Patent: April 18, 2000Assignee: Ford Global Technologies, Inc.Inventors: Richard Lawrence Allor, Gary Mark Crosbie, Douglas George Mcwatt, Arup Kumar Gangopadhyay