Patents by Inventor Jeffrey C. Huang
Jeffrey C. Huang 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: 10982639Abstract: A fuel injector is provided that includes various precise configuration parameters, including dimensions, shape and/or relative positioning of fuel injector features, resulting in improved efficiency of fuel flow through the fuel injector.Type: GrantFiled: December 13, 2017Date of Patent: April 20, 2021Assignee: Cummins Intellectual Property, Inc.Inventors: Lester L. Peters, Jeffrey C. Huang, David L. Buchanan, Corydon Edward Morris, Gary L. Gant, Denis Gill, Heribert Kammerstetter, Ernst Winklhofer
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Patent number: 9903329Abstract: A fuel injector is provided that includes various precise configuration parameters, including dimensions, shape and/or relative positioning of fuel injector features, resulting in improved efficiency of fuel flow through the fuel injector.Type: GrantFiled: April 16, 2012Date of Patent: February 27, 2018Assignee: CUMMINS INTELLECTUAL PROPERTY, INC.Inventors: Lester L. Peters, Jeffrey C. Huang, David L. Buchanan, Corydon Edward Morris, Gary Gant, Denis Gill, Heribert Kammerstetter, Ernst Winklhofer
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Patent number: 9719457Abstract: This disclosure provides system and method that can determine hydraulic start of injection (SOI) in engines using an in-cylinder pressure sensor. The system and method determine apparent heat release rate (AHRR) curve data for the cylinder from the pressure information provided by the in-cylinder pressure sensors, and the hydraulic SOI from the derivative of the AHRR curve data. The system and method provide diagnostic, control and/or compensation opportunities for fuel injector operation in high pressure fuel rail engine systems without use of expensive or complex fuel injector components.Type: GrantFiled: April 20, 2015Date of Patent: August 1, 2017Assignee: Cummins Intellectual Property, Inc.Inventors: Paul V. Moonjelly, Richard A. Booth, Lester L. Peters, Jeffrey C. Huang, Phanindra Garimella
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Patent number: 9644590Abstract: A fuel injector has a plurality of injection fuel delivery passages, which transport fuel from a proximate end to an injector cavity near the distal end of the fuel injector, wherein less than a total number of injection fuel delivery passages include an orifice. This configuration provides a reduction in fueling variation from pulse to pulse (multi-pulse) with respect to pulse separation due to pressure variation while allowing a sufficient amount of fuel flow to the injector cavity. Thus, the consistency of Start-Of-Injection (SOI) and opening rate both improve significantly and advantageously. For compactness, the orifices may be positioned in a cover plate used to retain the components of the injection control valve assembly and may further be arranged in an arc segment when viewed along a longitudinal axis.Type: GrantFiled: January 31, 2014Date of Patent: May 9, 2017Assignee: CUMMINS INC.Inventors: Paul Peavler, Donald J. Benson, Paul Douglas Free, Jeffrey C. Huang, Eric Benham, C. Edward Morris, Jr.
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Publication number: 20150226149Abstract: This disclosure provides system and method that can determine hydraulic start of injection (SOI) in engines using an in-cylinder pressure sensor. The system and method determine apparent heat release rate (AHRR) curve data for the cylinder from the pressure information provided by the in-cylinder pressure sensors, and the hydraulic SOI from the derivative of the AHRR curve data. The system and method provide diagnostic, control and/or compensation opportunities for fuel injector operation in high pressure fuel rail engine systems without use of expensive or complex fuel injector components.Type: ApplicationFiled: April 20, 2015Publication date: August 13, 2015Inventors: Paul V. Moonjelly, Richard A. Booth, Lester L. Peters, Jeffrey C. Huang, Phanindra Garimella
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Publication number: 20150219054Abstract: A fuel injector has a plurality of injection fuel delivery passages, which transport fuel from a proximate end to an injector cavity near the distal end of the fuel injector, wherein less than a total number of injection fuel delivery passages include an orifice. This configuration provides a reduction in fueling variation from pulse to pulse (multi-pulse) with respect to pulse separation due to pressure variation while allowing a sufficient amount of fuel flow to the injector cavity. Thus, the consistency of Start-Of-Injection (SOI) and opening rate both improve significantly and advantageously. For compactness, the orifices may be positioned in a cover plate used to retain the components of the injection control valve assembly and may further be arranged in an arc segment when viewed along a longitudinal axis.Type: ApplicationFiled: January 31, 2014Publication date: August 6, 2015Applicant: Cummins IncInventors: Paul Peavler, Donald J. Benson, Paul Douglas Free, Jeffrey C. Huang, Eric Benham, C. Edward Morris, JR.
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Patent number: 9010303Abstract: This disclosure provides system and method that can determine hydraulic start of injection (SOI) in engines using an in-cylinder pressure sensor. The system and method determine apparent heat release rate (AHRR) curve data for the cylinder from the pressure information provided by the in-cylinder pressure sensors, and the hydraulic SOI from the derivative of the AHRR curve data. The system and method provide diagnostic, control and/or compensation opportunities for fuel injector operation in high pressure fuel rail engine systems without use of expensive or complex fuel injector components.Type: GrantFiled: January 30, 2012Date of Patent: April 21, 2015Assignee: Cummins Intellectual Property, Inc.Inventors: Paul Moonjelly, Richard A. Booth, Lester L. Peters, Jeffrey C. Huang, Phanindra V. Garimella
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Publication number: 20130270369Abstract: A fuel injector is provided that includes various precise configuration parameters, including dimensions, shape and/or relative positioning of fuel injector features, resulting in improved efficiency of fuel flow through the fuel injector.Type: ApplicationFiled: April 16, 2012Publication date: October 17, 2013Applicant: CUMMINS INTELLECTUAL PROPERTY, INC.Inventors: Lester L. PETERS, Jeffrey C. HUANG, David L. BUCHANAN, Corydon Edward MORRIS, Gary GANT, Denis GILL, Heribert KAMMERSTETTER, Ernst WINKLHOFER
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Publication number: 20120216777Abstract: This disclosure provides system and method that can determine hydraulic start of injection (SOI) in engines using an in-cylinder pressure sensor. The system and method determine apparent heat release rate (AHRR) curve data for the cylinder from the pressure information provided by the in-cylinder pressure sensors, and the hydraulic SOI from the derivative of the AHRR curve data. The system and method provide diagnostic, control and/or compensation opportunities for fuel injector operation in high pressure fuel rail engine systems without use of expensive or complex fuel injector components.Type: ApplicationFiled: January 30, 2012Publication date: August 30, 2012Applicant: CUMMINS INTELLECTUAL PROPERTY, INC.Inventors: Paul MOONJELLY, Richard A. BOOTH, Lester L. PETERS, Jeffrey C. HUANG, Phanindra V. GARIMELLA
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Patent number: 5685490Abstract: A fuel injector with a hydraulically actuated needle check includes a fuel pressurization chamber positioned between a low pressure fuel supply passage and a nozzle supply bore. A portion of the low pressure fuel supply passage is in direct fluid communication with the fuel pressurization chamber via a bleed hole. A bleed pin extends into a fluid supply chamber adjacent the bleed hole. The bleed pin is movable between a first position in which the bleed hole is open and a second position in which a portion of the bleed pin closes the bleed hole when the hydraulically actuated needle check moves between its closed position and its open position, respectively. A supply valve is positioned in the low pressure fuel supply passage between the low pressure fuel supply chamber and the fuel pressurization chamber in order to prevent the back flow of fuel from the pressurization chamber into the supply passageways.Type: GrantFiled: January 22, 1996Date of Patent: November 11, 1997Assignee: Caterpillar Inc.Inventors: Thomas G. Ausman, Timothy E. Delaney, Jeffrey C. Huang, Charles R. Riggert, Michael T. Zimmer
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Patent number: 5522545Abstract: A hydraulically actuated fuel injector includes an intensifier piston with a tapered or conical protuberance and an injector body with a conical seat. During the pre-injection stage, the piston is spring loaded to seat its conical protuberance against the conical seat of the injector body. To start the injection, actuation fluid is admitted to the injector. The injector actuation volume is pressurized and the pressure acts initially only on the top of the conical protuberance of the piston. The displacement of the piston is temporarily retarded during the first stage of injection due to a throttling effect in allowing the high pressure fluid to act on the remaining top surface of the piston. The throttling effect is provided by the relatively narrow flow area between the conical protuberance and the conically shaped seat.Type: GrantFiled: January 25, 1995Date of Patent: June 4, 1996Assignee: Caterpillar Inc.Inventors: Frederick A. Camplin, Jeffrey C. Huang
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Patent number: 5297523Abstract: An improved actuating fluid inlet manifold for a plurality of hydraulically-actuated fuel injectors. The manifold includes fluid dynamic tuning apparatus for controlling the flow of relatively high pressure actuating fluid between the common rail passage of the manifold and the injectors. The fluid dynamic tuning apparatus includes a predetermined flow restriction defined in each of the rail branch passages of the manifold. Advantages of the fluid dynamic tuning apparatus include improved injector performance and/or a reduction in structural stresses of various engine components.Type: GrantFiled: February 26, 1993Date of Patent: March 29, 1994Assignee: Caterpillar Inc.Inventors: Gregory G. Hafner, Jeffrey C. Huang, Xiangying Liu