Patents by Inventor Eugine Choi

Eugine Choi 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: 10829708
    Abstract: A method for preventing or reducing engine knock or pre-ignition in a high compression spark ignition engine with relatively high oil consumption, lubricated with a lubricating oil by using as the lubricating oil a formulated oil. The formulated oil has a composition that contains a lubricating oil base stock comprising at least one ester including at least one group selected from the group consisting of Formula (1), Formula (2), Formula (3) and Formula (4) below or at least one ester having at least 25% of its carbons in the form of methyl groups: The lubricating oils of this disclosure are useful as passenger vehicle engine oil (PVEO) products.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: November 10, 2020
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Zhisheng Gao, Eugine Choi, Luca Salvi, Matthew W. Boland
  • Patent number: 10717069
    Abstract: Zn-promoted and/or Ga-promoted cracking catalysts, such as cracking catalysts comprising an MSE framework zeolite or an MFI framework zeolite can provide unexpectedly superior conversion of branched paraffins when used as part of a catalyst during reforming of a hydrocarbon fuel stream. The conversion and reforming of the hydrocarbon fuel stream can occur, for example, in an internal combustion engine. The conversion and reforming can allow for formation of higher octane compounds from the branched paraffins.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: July 21, 2020
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Brian M. Weiss, Gerardo J. Majano, Tilman W. Beutel, Karl G. Strohmaier, John F. Brody, Samia Ilias, Scott J. Weigel, Shamel Merchant, Eugine Choi, Robert J. Colby, Walter Weissman
  • Patent number: 10604720
    Abstract: A method for preventing or reducing engine knock or pre-ignition in a high compression spark ignition engine lubricated with a lubricating oil by introducing to a combustion chamber of the engine from 0.1 to 5% by volume of the gasoline used a lubricating oil as a formulated oil, said formulated oil having a composition comprising (i) a major amount of a lubricating oil base stock comprising at least 80% by weight of one branched ester having at least 15% of the total carbons in the form of methyl groups, and (ii) a minor amount of at least one ashless amine phosphate antiwear additive.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: March 31, 2020
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Zhisheng Gao, Luca Salvi, Eugine Choi, Matthew W. Boland, Andrew E. Taggi, Andrew D. Satterfield
  • Patent number: 10584292
    Abstract: Naphtha boiling range compositions are provided that can have improved combustion properties (relative to the research octane number of the composition) in spark ignition engines and/or compression ignition engines. The improved combustion properties can be achieved by controlling the total combined amounts of n-paraffins and isoparaffins that include a straight-chain propyl group (R1—CH2—CH2—CH2—R2). For such a straight-chain propyl group, R2 can correspond to any convenient CxHy group that can appear in a paraffin or isoparaffin. R1 can correspond to a hydrogen atom, making the straight-chain propyl group a terminal n-propyl group; or R1 can correspond to any convenient CxHy group that can appear in a paraffin or isoparaffin.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: March 10, 2020
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Eugine Choi, Matthew W. Boland, Zhisheng Gao, Luca Salvi, Shamel Merchant, Bruce W. Crawley
  • Patent number: 10550344
    Abstract: Naphtha boiling range compositions are provided that can have improved combustion properties (relative to the research octane number of the composition) in spark ignition engines and/or compression ignition engines. The improved combustion properties can be achieved by controlling the total combined amounts of n-paraffins and isoparaffins that include a straight-chain propyl group (R1—CH2—CH2—CH2—R2). For such a straight-chain propyl group, R2 can correspond to any convenient CxHy group that can appear in a paraffin or isoparaffin. R1 can correspond to a hydrogen atom, making the straight-chain propyl group a terminal n-propyl group; or R1 can correspond to any convenient CxHy group that can appear in a paraffin or isoparaffin.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: February 4, 2020
    Assignee: ExxonMobil Reseach and Engineering Company
    Inventors: Eugine Choi, Matthew W. Boland, Zhisheng Gao, Luca Salvi, Shamel Merchant, Bruce W. Crawley
  • Publication number: 20200018268
    Abstract: A power system comprises an engine configured to combust an air/fuel mixture and produce a flow of exhaust gas; an exhaust passageway fluidly connected to the engine to receive the flow of exhaust gas; an exhaust gas recirculation loop fluidly connecting the exhaust passageway to a fuel intake for the engine; a first conversion zone containing a fuel reforming catalyst located within the exhaust gas recirculation loop; and a second conversion zone located within the exhaust gas recirculation loop separate from and downstream of the first conversion zone stream, the second conversion zone containing a fuel cracking catalyst.
    Type: Application
    Filed: July 3, 2019
    Publication date: January 16, 2020
    Inventors: Shamel Merchant, Eugine Choi, Walter Weissman, Tilman W. Beutel, John F. Brody, Gerardo Majano, Karl G. Strohmaier, Brian Weiss, Robert J. Colby, Makoto Koike, Hiroshi Miyagawa, Seiji Yamamoto
  • Publication number: 20190338213
    Abstract: A method for preventing or reducing engine knock or pre-ignition in a high compression spark ignition engine lubricated with a lubricating oil by introducing to a combustion chamber of the engine from 0.1 to 5% by volume of the gasoline used a lubricating oil as a formulated oil, said formulated oil having a composition comprising (i) a major amount of a lubricating oil base stock comprising at least 80% by weight of one branched ester having at least 15% of the total carbons in the form of methyl groups, and (ii) a minor amount of at least one ashless amine phosphate antiwear additive.
    Type: Application
    Filed: July 15, 2019
    Publication date: November 7, 2019
    Inventors: Zhisheng Gao, Luca Salvi, Eugine Choi, Matthew W. Boland, Andrew E. Taggi, Andrew D. Satterfield
  • Publication number: 20190062667
    Abstract: An ashless lubricating oil having a lubricating oil base stock as a major component, and a mixture of (i) at least one ashless antiwear additive, (ii) at least one ashless detergent, and (iii) at least one aminic antioxidant, as minor components. The lubricating oil base stock is a branched polyol ester. The lubricating oil base stock is present in an amount from about 30 to about 99.8 mass percent, based on the total mass of the ashless lubricating oil. A method for improving oxidative stability and high temperature stability of a lubricating oil in an engine or other mechanical component lubricated with the lubricating oil by using the ashless lubricating oil. The ashless lubricating oil is useful as a passenger vehicle engine oil (PVEO).
    Type: Application
    Filed: August 22, 2018
    Publication date: February 28, 2019
    Inventors: Zhisheng GAO, Luca SALVI, Eugine CHOI, Matthew W. BOLAND
  • Publication number: 20190062668
    Abstract: An ashless lubricating oil having a lubricating oil base stock as a major component, and a mixture of (i) at least one ashless antiwear additive, (ii) at least one ashless detergent, and (iii) at least one aminic antioxidant, as minor components. The lubricating oil base stock is a monoester obtained by a) reacting one Guerbet alcohol of 8 to 20 carbon atoms with a Guerbet acid, a linear or branched acid of 6 to 20 carbon atoms or b) reacting one linear or branched alcohol with at least 6 to 20 carbon atoms with a Guerbet acid of 8 to 20 carbon atoms. The lubricating oil base stock is present in an amount from 30 to 99.8 wt. % of the oil. A method for improving oxidative stability and high temperature stability of a lubricating oil in an engine or other mechanical component lubricated with the lubricating oil by using the ashless lubricating oil.
    Type: Application
    Filed: August 22, 2018
    Publication date: February 28, 2019
    Inventors: Zhisheng GAO, Luca SALVI, Eugine CHOI, Matthew W. BOLAND
  • Patent number: 10119090
    Abstract: A method for preventing or reducing engine knock or pre-ignition in a high compression spark ignition engine lubricated with a lubricating oil by using as the lubricating oil a formulated oil. The formulated oil has a composition that contains (i) a lubricating oil base stock comprising at least one ester including at least one group selected from the group consisting of Formula (1), Formula (2), and Formula (3): The lubricating oils of this disclosure are useful as passenger vehicle engine oil (PVEO) products.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: November 6, 2018
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Jason Z. Gao, Eugine Choi, Matthew W. Boland, Luca Salvi
  • Patent number: 10119093
    Abstract: A lubricant composition for high compression spark ignition engines that contains at least one bismuth-containing compound (e.g., a bismuth salt of a carboxylic acid). A method for preventing or reducing engine knock and pre-ignition in an engine lubricated with a formulated oil. The formulated oil has a composition including at least one bismuth-containing compound (e.g., a bismuth salt of a carboxylic acid). A fuel composition for high compression spark ignition engines that contains at least one bismuth-containing compound (e.g., a bismuth salt of a carboxylic acid). A method for preventing or reducing engine knock and pre-ignition in an engine by using a fuel additive composition in a gasoline fuel composition. The fuel additive composition contains at least one bismuth-containing compound (e.g., a bismuth salt of a carboxylic acid). The lubricating oils of this disclosure are useful as passenger vehicle engine oil (PVEO) products.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: November 6, 2018
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Jason Z. Gao, Eugine Choi, Matthew W. Boland, Luca Salvi
  • Publication number: 20180169623
    Abstract: Zn-promoted and/or Ga-promoted cracking catalysts, such as cracking catalysts comprising an MSE framework zeolite or an MFI framework zeolite can provide unexpectedly superior conversion of branched paraffins when used as part of a catalyst during reforming of a hydrocarbon fuel stream. The conversion and reforming of the hydrocarbon fuel stream can occur, for example, in an internal combustion engine. The conversion and reforming can allow for formation of higher octane compounds from the branched paraffins.
    Type: Application
    Filed: December 5, 2017
    Publication date: June 21, 2018
    Inventors: Brian M. Weiss, Gerardo J. Majano, Tilman W. Beutel, Karl G. Strohmaier, John F. Brody, Samia Ilias, Scott J. Weigel, Shamel Merchant, Eugine Choi, Robert J. Colby, Walter Weissman
  • Publication number: 20180171253
    Abstract: A method for preventing or reducing engine knock or pre-ignition in a high compression spark ignition engine with relatively high oil consumption, lubricated with a lubricating oil by using as the lubricating oil a formulated oil. The formulated oil has a composition that contains a lubricating oil base stock comprising at least one ester including at least one group selected from the group consisting of Formula (1), Formula (2), Formula (3) and Formula (4) below or at least one ester having at least 25% of its carbons in the form of methyl groups: The lubricating oils of this disclosure are useful as passenger vehicle engine oil (PVEO) products.
    Type: Application
    Filed: December 11, 2017
    Publication date: June 21, 2018
    Inventors: Zhisheng Gao, Eugine Choi, Luca Salvi, Matthew W. Boland
  • Patent number: 10001091
    Abstract: Catalyst compositions suitable for use in the exhaust gas recycle stream of an internal combustion engine are provided. Such catalyst compositions typically provide significant amounts of methane in addition to syngas. A reformer incorporating such a catalyst for use in an exhaust gas recycle portion of an internal combustion engine powertrain is described. A powertrain incorporating such a reformer, a method of increasing the octane rating of an exhaust gas recycle stream, and a method of operating an internal combustion engine using methane-assisted combustion are also described.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: June 19, 2018
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Brian M. Weiss, Walter Weissman, Tilman W. Beutel, John F. Brody, Eugine Choi, Wenjun Li, Paul D. Madiara, Chris E. Esther Kliewer, Karl G. Strohmaier, Scott J. Weigel, Brett Loveless, Makoto Kioke, Hiroshi Miyagawa
  • Publication number: 20180134975
    Abstract: Naphtha boiling range compositions are provided that can have improved combustion properties (relative to the research octane number of the composition) in spark ignition engines and/or compression ignition engines. The improved combustion properties can be achieved by controlling the total combined amounts of n-paraffins and isoparaffins that include a straight-chain propyl group (R1—CH2—CH2—CH2—R2). For such a straight-chain propyl group, R2 can correspond to any convenient CxHy group that can appear in a paraffin or isoparaffin. R1 can correspond to a hydrogen atom, making the straight-chain propyl group a terminal n-propyl group; or R1 can correspond to any convenient CxHy group that can appear in a paraffin or isoparaffin.
    Type: Application
    Filed: October 20, 2017
    Publication date: May 17, 2018
    Inventors: Eugine CHOI, Matthew W. BOLAND, Zhisheng GAO, Luca SALVI, Shamel MERCHANT, Bruce W. CRAWLEY
  • Publication number: 20180134978
    Abstract: Naphtha boiling range compositions are provided that can have improved combustion properties (relative to the research octane number of the composition) in spark ignition engines and/or compression ignition engines. The improved combustion properties can be achieved by controlling the total combined amounts of n-paraffins and isoparaffins that include a straight-chain propyl group (R1—CH2—CH2—CH2—R2). For such a straight-chain propyl group, R2 can correspond to any convenient CxHy group that can appear in a paraffin or isoparaffin. R1 can correspond to a hydrogen atom, making the straight-chain propyl group a terminal n-propyl group; or R1 can correspond to any convenient CxHy group that can appear in a paraffin or isoparaffin.
    Type: Application
    Filed: October 20, 2017
    Publication date: May 17, 2018
    Inventors: Eugine CHOI, Matthew W. BOLAND, Zhisheng GAO, Luca SALVI, Shamel MERCHANT, Bruce W. CRAWLEY
  • Patent number: 9944877
    Abstract: A method for preventing or reducing engine knock or pre-ignition in a high compression spark ignition engine lubricated with a lubricating oil by using as the lubricating oil a formulated oil. The formulated oil has a composition that contains at least one branched hydrocarbon having at least about 25% of the carbons in the form of methyl groups, or at least one polyol ester of at least one branched mono-carboxylic acid. A lubricating engine oil having a composition that contains at least one branched hydrocarbon having at least about 25% of the carbons in the form of methyl groups, or at least one polyol ester of at least one branched mono-carboxylic acid. The lubricating engine oils are useful as passenger vehicle engine oil (PVEO) products.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: April 17, 2018
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Jason Z. Gao, Eugine Choi, Luca Salvi, Matthew W. Boland
  • Publication number: 20180057769
    Abstract: A method for preventing or reducing engine knock or pre-ignition in a high compression spark ignition engine lubricated with a lubricating oil by introducing to a combustion chamber of the engine from 0.1 to 5% by volume of the gasoline used a lubricating oil as a formulated oil, said formulated oil having a composition comprising (i) a major amount of a lubricating oil base stock comprising at least 80% by weight of one branched ester having at least 15% of the total carbons in the form of methyl groups, and (ii) a minor amount of at least one ashless amine phosphate antiwear additive. Also provided is a lubricating engine oil for high compression spark ignition engines including (i) a major amount of a lubricating oil base stock comprising at least 80% by weight a trimethylol propane ester of 50:50 mixture of isobutyric acid and 3,5,5-trimethylhexanoic acid and (ii) a minor amount of at least one amine phosphate ashless antiwear additive.
    Type: Application
    Filed: October 24, 2017
    Publication date: March 1, 2018
    Inventors: Zhisheng Gao, Luca Salvi, Eugine Choi, Matthew W. Boland
  • Patent number: 9896634
    Abstract: A method for preventing or reducing engine knock or pre-ignition in an engine lubricated with a lubricating oil by using as the lubricating oil a formulated oil. The formulated oil has a composition comprising at least one ester of a non-aromatic dicarboxylic acid. The at least one ester of a non-aromatic dicarboxylic acid preferably comprises at least one adipate ester (e.g., dialkyl adipate ester). A lubricating engine oil having a composition comprising at least one ester of a non-aromatic dicarboxylic acid (e.g., adipate ester). A fuel additive composition for use in a gasoline fuel composition or a diesel fuel composition. The gasoline fuel composition or the diesel fuel composition is used in a spark ignition internal combustion engine. The fuel additive composition comprises at least one ester of a non-aromatic dicarboxylic acid (e.g., adipate ester). The lubricating oils of this disclosure are particularly advantageous as passenger vehicle engine oil products.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: February 20, 2018
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Jason Zhisheng Gao, Eric M. Bunnelle, Eugine Choi, Tomasz M. Young, Samuel C. Bainbridge
  • Patent number: 9617490
    Abstract: Catalyst compositions suitable for use in the exhaust gas recycle stream of an internal combustion engine are provided. Such catalyst compositions typically provide significant amounts of methane in addition to syngas. A reformer incorporating such a catalyst for use in an exhaust gas recycle portion of an internal combustion engine powertrain is described. A powertrain incorporating such a reformer, a method of increasing the octane rating of an exhaust gas recycle stream, and a method of operating an internal combustion engine using methane-assisted combustion are also described.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: April 11, 2017
    Assignees: ExxonMobil Research and Engineering Company, Toyota Central Research and Development Labs, Inc.
    Inventors: Brian Michael Weiss, Walter Weissman, Tilman Wolfram Beutel, John Francis Brody, Eugine Choi, Wenjun Li, Paul Dmitri Madiara, Chris Esther Kliewer, Karl Gottlieb Strohmaier, Scott J. Weigel, Brett Loveless, Makota Koike, Hiroshi Miyagawa