Patents by Inventor Jonathan W. Anders
Jonathan W. Anders 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: 11649761Abstract: An exhaust heater system includes an exhaust heater and an air supply tube disposed within the exhaust heater. Relatively hot exhaust gas from an engine is directed into the exhaust heater, whereby heat from the exhaust heats the interior of the air supply tube. The heat partially vaporizes liquid methanol injected into the air supply tube. To control the amount of heating, the exhaust can be directed to the air supply tube as well as an exhaust bypass, whereby exhaust directed to the exhaust bypass does not heat the interior of the air supply tube.Type: GrantFiled: December 22, 2021Date of Patent: May 16, 2023Assignee: Caterpillar Inc.Inventors: Kenth I. Svensson, Jonathan W. Anders, Naga Krishna Chaitanya Kavuri
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Patent number: 11598300Abstract: Operating an engine includes injecting a first charge of liquid fuel using a first set of nozzle outlets in a fuel injector, and injecting a second charge of liquid fuel using a second set of nozzle outlets in a fuel injector. The first charge is autoignited in a first engine cycle, and the second charge is autoignited in a second engine cycle, and may be used to pilot ignite a charge of gaseous fuel. Operating the engine further includes limiting errors in targeting of the second charge of liquid fuel caused by transitioning the engine from a first combination to a second combination of speed, load, and boost, by varying an injection pressure of the liquid fuel from the first engine cycle to the second engine cycle.Type: GrantFiled: February 16, 2021Date of Patent: March 7, 2023Assignee: Caterpillar Inc.Inventors: Jonathan W. Anders, Bobby John, Robert Campion
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Patent number: 11415083Abstract: An engine system includes a first cylinder including a first piston, a second cylinder including a second piston, and a fuel injector fluidly connected to the first cylinder. The first cylinder is a combustion cylinder, and the second cylinder is an expansion cylinder. The second cylinder is fluidly connected to the first cylinder when the first piston is in at least one position in the first cylinder. The fuel injector is configured to deliver hydrogen gas to the first cylinder.Type: GrantFiled: July 9, 2021Date of Patent: August 16, 2022Assignee: Caterpillar Inc.Inventors: Chaitanya Kavuri, Jonathan W. Anders
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Publication number: 20210164428Abstract: Operating an engine includes injecting a first charge of liquid fuel using a first set of nozzle outlets in a fuel injector, and injecting a second charge of liquid fuel using a second set of nozzle outlets in a fuel injector. The first charge is autoignited in a first engine cycle, and the second charge is autoignited in a second engine cycle, and may be used to pilot ignite a charge of gaseous fuel. Operating the engine further includes limiting errors in targeting of the second charge of liquid fuel caused by transitioning the engine from a first combination to a second combination of speed, load, and boost, by varying an injection pressure of the liquid fuel from the first engine cycle to the second engine cycle.Type: ApplicationFiled: February 16, 2021Publication date: June 3, 2021Applicant: Caterpillar Inc.Inventors: Jonathan W. Anders, Bobby John, Robert Campion
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Patent number: 10989153Abstract: Operating an engine includes injecting a first charge of liquid fuel using a first set of nozzle outlets in a fuel injector, and injecting a second charge of liquid fuel using a second set of nozzle outlets in a fuel injector. The first charge is autoignited in a first engine cycle, and the second charge is autoignited in a second engine cycle, and may be used to pilot ignite a charge of gaseous fuel. Operating the engine further includes limiting errors in targeting of the second charge of liquid fuel caused by transitioning the engine from a first combination to a second combination of speed, load, and boost, by varying an injection pressure of the liquid fuel from the first engine cycle to the second engine cycle.Type: GrantFiled: August 21, 2018Date of Patent: April 27, 2021Assignee: Caterpillar Inc.Inventors: Jonathan W. Anders, Bobby John, Robert Campion
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Patent number: 10982601Abstract: A method of controlling a dual fuel engine system includes adjusting a phasing control parameter such as air-fuel ratio (AFR), based on a phasing signal to limit an error in a phasing of combustion of gaseous fuel. The cylinder is switched to a dual fuel liquid pilot-ignited mode by commanding direct injection of an early pilot shot of liquid fuel, based on the adjustment to the phasing control parameter, and production of a spark to ignite gaseous fuel in the cylinder. Switching the cylinder to the dual fuel liquid pilot-ignited mode is completed by commanding direct injection of an early pilot shot and a second pilot shot of liquid fuel to ignite gaseous fuel in response to combustion of the early and second pilot shots in the cylinder.Type: GrantFiled: March 15, 2019Date of Patent: April 20, 2021Assignee: Caterpillar Inc.Inventors: Jonathan W. Anders, Bobby John
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Patent number: 10934966Abstract: A combustion control system for a dual fuel engine includes a combustion control unit structured to receive phasing data for combustion of a main charge of gaseous fuel ignited by way of pilot shots of a liquid fuel, output a pilot fueling command based on the phasing data, and output a valve timing command. The combustion control unit is further structured to vary a phasing of combustion of a main charge of a gaseous fuel ignited by pilot shots of a liquid fuel based on an adjustment to at least one of a pilot shot delivery parameter or a valve timing parameter such as intake valve closing timing from a first engine cycle to a second engine cycle. Control of the intake valve timing can be based on a main pilot shot timing error.Type: GrantFiled: February 19, 2019Date of Patent: March 2, 2021Assignee: Caterpillar Inc.Inventors: Jonathan W. Anders, Jason Jon Rasmussen, Bobby John
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Publication number: 20210040925Abstract: A fuel system for an internal combustion engine includes a fuel injector having a nozzle with first and second sets of spray orifices formed therein. The fuel injector also includes a first and a second outlet check movable to open and close the first and second sets of spray orifices. Spray plume ducts are supported at fixed orientations relative to a nozzle of the fuel injector, and each are oriented in-line with a center axis defined by one of the spray orifices. The spray plume ducts may be directly attached to the fuel injector or to a duct carrier mounted to an engine head.Type: ApplicationFiled: August 5, 2019Publication date: February 11, 2021Applicants: Caterpillar Inc., Perkins Engines Company LimitedInventors: Bobby John, Robert Michael Campion, Jonathan W. Anders
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Patent number: 10900450Abstract: A fuel system for an internal combustion engine includes a fuel injector having a nozzle with first and second sets of spray orifices formed therein. The fuel injector also includes a first and a second outlet check movable to open and close the first and second sets of spray orifices. Spray plume ducts are supported at fixed orientations relative to a nozzle of the fuel injector, and each are oriented in-line with a center axis defined by one of the spray orifices. The spray plume ducts may be directly attached to the fuel injector or to a duct carrier mounted to an engine head.Type: GrantFiled: August 5, 2019Date of Patent: January 26, 2021Assignees: Caterpillar Inc., Perkins Engines Company LimitedInventors: Bobby John, Robert Michael Campion, Jonathan W. Anders
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Patent number: 10876464Abstract: A piston for an internal combustion engine includes a crown portion having a bowl that includes a plurality of protrusions. Each of the plurality of protrusions includes a first side surface and a second side surface. Other features including at least one ledge formed between protrusions in segments, and a generally flat, inward facing surface on the protrusions may also be used.Type: GrantFiled: September 25, 2018Date of Patent: December 29, 2020Assignee: Caterpillar Inc.Inventors: Kenth I. Svensson, Jonathan W. Anders, Adam Dempsey
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Patent number: 10876495Abstract: A component of a piston may include a crown portion configured to face a flame deck surface disposed at one end of a cylinder bore in which the piston is configured to reciprocate, such that a combustion chamber is defined within the cylinder bore and between a top surface of the crown portion and the flame deck surface. The component may include an indent formed in the top surface. The indent may be aligned with a fuel jet centerline along which a fuel jet is to be injected into the combustion chamber. The indent may include a first arcuate indent portion, that curves in a first direction from a center of the crown portion, and a second arcuate indent portion that curves in a second direction from a break in a reentrant feature that overhangs the first arcuate indent portion. The component may be included in an internal combustion engine.Type: GrantFiled: October 11, 2018Date of Patent: December 29, 2020Assignee: Caterpillar Inc.Inventors: Bobby John, Jonathan W. Anders
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Publication number: 20200362791Abstract: Operating a dual fuel engine system includes injecting an early shot and a second shot of a liquid fuel into a cylinder after a late closing timing of an intake valve, and producing a first and a second pilot flame based on ignition of the early shot and the second shot of liquid fuel. The early shot of liquid fuel is targeted such that a distribution of ignition points of the first pilot flame is biased outwardly of a combustion bowl in the piston. Propagation of the first and second pilot flames from geometrically distinct ignition locations rapidly increases pressure and temperature in the cylinder to provide fast combustion of a lean mixture of a gaseous fuel and air in a main charge in the cylinder.Type: ApplicationFiled: May 13, 2019Publication date: November 19, 2020Applicant: Caterpillar Inc.Inventors: Bobby John, Jonathan W. Anders
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Patent number: 10823106Abstract: Operating a dual fuel engine system includes injecting an early shot and a second shot of a liquid fuel into a cylinder after a late closing timing of an intake valve, and producing a first and a second pilot flame based on ignition of the early shot and the second shot of liquid fuel. The early shot of liquid fuel is targeted such that a distribution of ignition points of the first pilot flame is biased outwardly of a combustion bowl in the piston. Propagation of the first and second pilot flames from geometrically distinct ignition locations rapidly increases pressure and temperature in the cylinder to provide fast combustion of a lean mixture of a gaseous fuel and air in a main charge in the cylinder.Type: GrantFiled: May 13, 2019Date of Patent: November 3, 2020Assignee: Caterpillar Inc.Inventors: Bobby John, Jonathan W. Anders
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Publication number: 20200291875Abstract: A method of controlling a dual fuel engine system includes adjusting a phasing control parameter such as air-fuel ratio (AFR), based on a phasing signal to limit an error in a phasing of combustion of gaseous fuel. The cylinder is switched to a dual fuel liquid pilot-ignited mode by commanding direct injection of an early pilot shot of liquid fuel, based on the adjustment to the phasing control parameter, and production of a spark to ignite gaseous fuel in the cylinder. Switching the cylinder to the dual fuel liquid pilot-ignited mode is completed by commanding direct injection of an early pilot shot and a second pilot shot of liquid fuel to ignite gaseous fuel in response to combustion of the early and second pilot shots in the cylinder.Type: ApplicationFiled: March 15, 2019Publication date: September 17, 2020Applicant: Caterpillar Inc.Inventors: Jonathan W. Anders, Bobby John
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Patent number: 10767610Abstract: A liquid fuel injector for a fuel system in an internal combustion engine includes two injection control valves for controlling two outlet checks. A common nozzle supply cavity is fluidly connected to an inlet passage and supplies each of the two sets of nozzle outlets opened and closed by the outlet checks. A first nozzle outlet set forms a narrower spray angle and has a first combination of outlet number and outlet size, and a second nozzle outlet set forms a wider spray angle and has a second combination of outlet number and outlet size. The first nozzle outlet set has a greater steady flow than the second nozzle outlet set.Type: GrantFiled: August 21, 2018Date of Patent: September 8, 2020Assignee: Caterpillar Inc.Inventors: Jonathan W Anders, Bobby John, Robert Campion
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Publication number: 20200263627Abstract: A combustion control system for a dual fuel engine includes a combustion control unit structured to receive phasing data for combustion of a main charge of gaseous fuel ignited by way of pilot shots of a liquid fuel, output a pilot fueling command based on the phasing data, and output a valve timing command. The combustion control unit is further structured to vary a phasing of combustion of a main charge of a gaseous fuel ignited by pilot shots of a liquid fuel based on an adjustment to at least one of a pilot shot delivery parameter or a valve timing parameter such as intake valve closing timing from a first engine cycle to a second engine cycle. Control of the intake valve timing can be based on a main pilot shot timing error.Type: ApplicationFiled: February 19, 2019Publication date: August 20, 2020Applicant: Caterpillar Inc.Inventors: Jonathan W. Anders, Jason Jon Rasmussen, Bobby John
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Patent number: 10718257Abstract: A method of operating a dual-fuel combustion system includes reciprocating a piston between a bottom dead center and a top dead center of a cylinder, the piston including a piston bowl, a circumferentially extending recess located radially outside of the piston bowl, and a plurality of diverters in the recess. The method includes opening an intake valve to introduce a first fuel, and injecting, by a set of fuel injector orifices substantially aligned with the diverters, a second fuel toward the diverters. The method also includes autoigniting the second fuel to ignite the first fuel.Type: GrantFiled: January 15, 2019Date of Patent: July 21, 2020Assignee: Caterpillar Inc.Inventors: Jonathan W. Anders, Bobby John
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Publication number: 20200224604Abstract: A piston for an internal combustion engine includes a piston head having a central axis and a top surface. The top surface of the piston includes a piston bowl, a circumferentially extending recess located radially outside the piston bowl, a plurality of diverters located within the recess, and a crown portion located radially outside the recess and extending to an outer surface of the piston.Type: ApplicationFiled: January 15, 2019Publication date: July 16, 2020Applicant: Caterpillar Inc.Inventors: Jonathan W. Anders, Bobby John
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Publication number: 20200224583Abstract: A method of operating a dual-fuel combustion system includes reciprocating a piston between a bottom dead center and a top dead center of a cylinder, the piston including a piston bowl, a circumferentially extending recess located radially outside of the piston bowl, and a plurality of diverters in the recess. The method includes opening an intake valve to introduce a first fuel, and injecting, by a set of fuel injector orifices substantially aligned with the diverters, a second fuel toward the diverters. The method also includes autoigniting the second fuel to ignite the first fuel.Type: ApplicationFiled: January 15, 2019Publication date: July 16, 2020Applicant: Caterpillar Inc.Inventors: Jonathan W. Anders, Bobby JOHN
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Patent number: 10704492Abstract: A piston for an internal combustion engine includes a piston head having a central axis and a top surface. The top surface of the piston includes a piston bowl, a circumferentially extending recess located radially outside the piston bowl, a plurality of diverters located within the recess, and a crown portion located radially outside the recess and extending to an outer surface of the piston.Type: GrantFiled: January 15, 2019Date of Patent: July 7, 2020Assignee: Caterpillar Inc.Inventors: Jonathan W. Anders, Bobby John