Patents by Inventor CHAD KOCI
CHAD KOCI 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).
-
Publication number: 20240044308Abstract: A dual fuel system for an internal combustion engine includes a first fuel supply of a liquid pilot fuel, a primary fuel supply of a liquid primary fuel, and a dual fuel injector. The dual fuel injector includes a spill valve fluidly connected with a plunger cavity and movable to control a start of injection and an end of injection, and an admission valve. The admission valve is movable to admit a pilot fuel into the fuel injector, such that the pilot fuel is conveyed through an outlet check to form, within a primary fuel passage fluidly connected to the plunger cavity, a segmented fuel charge of leading pilot fuel and trailing primary fuel by displacing some of the primary fuel. The liquid pilot fuel may be a higher cetane/lower octane liquid fuel, and the primary fuel may be a lower cetane/higher octane liquid fuel.Type: ApplicationFiled: October 19, 2023Publication date: February 8, 2024Applicant: Caterpillar Inc.Inventors: Eric Lee Schroeder, David Todd Montgomery, Dana Ray Coldren, Chad Koci
-
Patent number: 11815054Abstract: A dual fuel system for an internal combustion engine includes a first fuel supply of a liquid pilot fuel, a primary fuel supply of a liquid primary fuel, and a dual fuel injector. The dual fuel injector includes a spill valve fluidly connected with a plunger cavity and movable to control a start of injection and an end of injection, and an admission valve. The admission valve is movable to admit a pilot fuel into the fuel injector, such that the pilot fuel is conveyed through an outlet check to form, within a primary fuel passage fluidly connected to the plunger cavity, a segmented fuel charge of leading pilot fuel and trailing primary fuel by displacing some of the primary fuel. The liquid pilot fuel may be a higher cetane/lower octane liquid fuel, and the primary fuel may be a lower cetane/higher octane liquid fuel.Type: GrantFiled: June 3, 2022Date of Patent: November 14, 2023Assignee: Caterpillar Inc.Inventors: Eric Lee Schroeder, David Todd Montgomery, Dana Ray Coldren, Chad Koci
-
Patent number: 11639701Abstract: An engine system includes an engine housing having a cylinder block and a cylinder head. An intake opening and an exhaust opening and an igniter opening are formed in a fire deck surface of the cylinder head. A plurality of always-open fuel admission ports are fluidly connected to a combustion chamber and arranged in at least one of the cylinder block or the cylinder head. The always-open fuel admission ports convey a gaseous fuel such as a gaseous hydrogen fuel, a gaseous hydrocarbon fuel, or still others, to the combustion chamber.Type: GrantFiled: June 1, 2022Date of Patent: May 2, 2023Assignee: Caterpillar Inc.Inventors: Chad Koci, Bobby John, Naga Krishna Chaitanya Kavuri, Jonathan William Anders
-
Publication number: 20220325501Abstract: A power system may include a high-speed flywheel connected to an engine of a machine; a battery; a motor-generator unit (MGU) connected to the engine and the battery; and a turbocharger connected to the engine. One or more of the high-speed flywheel, the battery and the MGU, or the turbocharger may be configured to provide supplemental power to power provided by the engine to operate the machine, or provide replacement power when no power is provided by the engine to operate the machine.Type: ApplicationFiled: April 9, 2021Publication date: October 13, 2022Applicant: Caterpillar Inc.Inventors: Chad KOCI, Jay R. STEFFEN, Fang GUO, Richard W. KRUISWYK, Gaurav VASUDEVA, Robert Michael MCDAVID, Timothy Adam BAZYN
-
Publication number: 20220290641Abstract: A dual fuel system for an internal combustion engine includes a first fuel supply of a liquid pilot fuel, a primary fuel supply of a liquid primary fuel, and a dual fuel injector. The dual fuel injector includes a spill valve fluidly connected with a plunger cavity and movable to control a start of injection and an end of injection, and an admission valve. The admission valve is movable to admit a pilot fuel into the fuel injector, such that the pilot fuel is conveyed through an outlet check to form, within a primary fuel passage fluidly connected to the plunger cavity, a segmented fuel charge of leading pilot fuel and trailing primary fuel by displacing some of the primary fuel. The liquid pilot fuel may be a higher cetane/lower octane liquid fuel, and the primary fuel may be a lower cetane/higher octane liquid fuel.Type: ApplicationFiled: June 3, 2022Publication date: September 15, 2022Applicant: Caterpillar Inc.Inventors: Eric Lee Schroeder, David Todd Montgomery, Dana Ray Coldren, Chad Koci
-
Publication number: 20220243691Abstract: A dual fuel system for an internal combustion engine includes a first fuel supply of a liquid pilot fuel, a primary fuel supply of a liquid primary fuel, and a dual fuel injector. The dual fuel injector includes a spill valve fluidly connected with a plunger cavity and movable to control a start of injection and an end of injection, and an admission valve. The admission valve is movable to admit a pilot fuel into the fuel injector, such that the pilot fuel is conveyed through an outlet check to form, within a primary fuel passage fluidly connected to the plunger cavity, a segmented fuel charge of leading pilot fuel and trailing primary fuel by displacing some of the primary fuel. The liquid pilot fuel may be a higher cetane/lower octane liquid fuel, and the primary fuel may be a lower cetane/higher octane liquid fuel.Type: ApplicationFiled: February 4, 2021Publication date: August 4, 2022Applicant: Caterpillar Inc.Inventors: Eric Lee Schroeder, David Todd Montgomery, Dana Ray Coldren, Chad Koci
-
Patent number: 11384721Abstract: A dual fuel system for an internal combustion engine includes a first fuel supply of a liquid pilot fuel, a primary fuel supply of a liquid primary fuel, and a dual fuel injector. The dual fuel injector includes a spill valve fluidly connected with a plunger cavity and movable to control a start of injection and an end of injection, and an admission valve. The admission valve is movable to admit a pilot fuel into the fuel injector, such that the pilot fuel is conveyed through an outlet check to form, within a primary fuel passage fluidly connected to the plunger cavity, a segmented fuel charge of leading pilot fuel and trailing primary fuel by displacing some of the primary fuel. The liquid pilot fuel may be a higher cetane/lower octane liquid fuel, and the primary fuel may be a lower cetane/higher octane liquid fuel.Type: GrantFiled: February 4, 2021Date of Patent: July 12, 2022Assignee: Caterpillar Inc.Inventors: Eric Lee Schroeder, David Todd Montgomery, Dana Ray Coldren, Chad Koci
-
Patent number: 10612508Abstract: A fuel injector for an internal combustion engine is disclosed. The fuel injector includes a body defining an orifice. The orifice is configured to provide passage to a fuel into a combustion chamber of the internal combustion engine. The orifice includes an inlet port having a first oval shape and an outlet port having a second oval shape. The second al shape is orthogonal to the first oval shape. Moreover, a transition from the first oval shape to the second oval shape defines a stagnation plane, facilitating an exit of the fuel as a fan spray from the outlet port.Type: GrantFiled: June 28, 2017Date of Patent: April 7, 2020Assignee: Caterpillar Inc.Inventors: David Ginter, Chad Koci, Russell P. Fitzgerald, Jonathan W. Anders
-
Publication number: 20190003438Abstract: A fuel injector for an internal combustion engine is disclosed. The fuel injector includes a body defining an orifice. The orifice is configured to provide passage to a fuel into a combustion chamber of the internal combustion engine. The orifice includes an inlet port having a first oval shape and an outlet port having a second oval shape. The second al shape is orthogonal to the first oval shape. Moreover, a transition from the first oval shape to the second oval shape defines a stagnation plane, facilitating an exit of the fuel as a fan spray from the outlet port.Type: ApplicationFiled: June 28, 2017Publication date: January 3, 2019Applicant: Caterpillar Inc.Inventors: David Ginter, Chad Koci, Russell P. Fitzgerald, Jonathan W. Anders
-
Patent number: 9915190Abstract: A ducted combustion system is disclosed. The ducted combustion system may include a combustion chamber, which is defined as an enclosure bound at a first end by a flame deck surface of a cylinder head of an internal combustion engine and bound at a second end by a piston top surface of a piston disposed within the internal combustion engine. The system may further include a fuel injector, having at least one orifice, injecting fuel into the combustion chamber as at least one fuel jet. The system may further include at least one Venturi duct disposed within the combustion chamber between the flame deck surface and the piston top surface, the at least one Venturi duct being disposed such that each of the at least one fuel jet, at least partially, enters the at least one Venturi duct structure upon being injected into the combustion chamber.Type: GrantFiled: July 13, 2015Date of Patent: March 13, 2018Assignee: Caterpillar, Inc.Inventor: Chad Koci
-
Patent number: 9803538Abstract: A ducted combustion system is disclosed. The ducted combustion system includes a combustion chamber bound by a flame deck surface of a cylinder head of an internal combustion engine and by a piston top surface of a piston disposed within the internal combustion engine. The system includes a fuel injector including a plurality of orifices, the plurality of orifices injecting fuel into the combustion chamber as a plurality of fuel jets. The system includes a duct structure defining a plurality of ducts and disposed within the combustion chamber between the flame deck surface and the piston top surface, the plurality of ducts being disposed such that each of the plurality of fuel jets at least partially enters one of the plurality of ducts upon being injected into the combustion chamber.Type: GrantFiled: April 13, 2015Date of Patent: October 31, 2017Assignee: Caterpillar Inc.Inventors: Jonathan Anders, Kenth Svensson, Bobby John, Chad Koci, Christopher Gehrke, Glen Martin, Timothy Bazyn
-
Patent number: 9797351Abstract: A ducted combustion system is disclosed. The ducted combustion system may include a combustion chamber and a fuel injector in fluid connection with the combustion chamber and including at least one orifice opening from an injector tip of the fuel injector, the at least one orifice injecting fuel into the combustion chamber as at least one fuel jet. The system may further include at least one duct disposed within the combustion chamber such that the at least one fuel jet, at least partially, enters the at least one duct upon being injected into the combustion chamber. The system may further include a duct cooling system configured to cool a mixture of fuel and air of the at least one fuel jet.Type: GrantFiled: July 6, 2015Date of Patent: October 24, 2017Assignee: Caterpillar Inc.Inventors: Kenth Svensson, Chad Koci, Christopher Gehrke
-
Patent number: 9638131Abstract: An internal combustion engine includes a cylinder case forming a cylinder bore having a centerline and an inner bore surface. A piston disposed within the cylinder bore forms a crown surface. A region defined between the piston and the cylinder bore in a radial direction has an annularly shaped mouth opening surrounding the crown surface. A cylinder head is disposed to cover an open end of the cylinder bore such that a variable volume is defined within the cylinder bore between the cylinder head and the piston. The cylinder head also forms a flame deck in fluid contact with the variable volume. A deflector structure forms a portion of the inner bore surface adjacent the flame deck surface, and is disposed between the flame deck and a topmost ring seal groove of the piston when the piston is at a TDC position.Type: GrantFiled: September 26, 2014Date of Patent: May 2, 2017Assignee: Caterpillar Inc.Inventors: Chad Koci, Steven C. Zoz, Jonathan Anders, Kenth I. Svensson
-
Patent number: 9587606Abstract: A ducted combustion system is disclosed. The ducted combustion system includes a combustion chamber bound by a flame deck surface of a cylinder head of an internal combustion engine and by a piston top surface of a piston disposed within the internal combustion engine. The system includes a fuel injector including one or more orifices, the one or more orifices injecting fuel into the combustion chamber as one or more fuel jets. The system includes one or more ducts disposed within the combustion chamber between the flame deck surface and the piston top surface, the one or more ducts being generally tubular shaped structures and being disposed such that each of the one or more fuel jets at least partially enters one of the one or more ducts upon being injected into the combustion chamber.Type: GrantFiled: April 13, 2015Date of Patent: March 7, 2017Assignee: Caterpillar Inc.Inventors: Jonathan Anders, Kenth Svensson, Bobby John, Chad Koci, Christopher Gehrke, Glen Martin, Timothy Bazyn
-
Publication number: 20170016384Abstract: A ducted combustion system is disclosed. The ducted combustion system may include a combustion chamber, which is defined as an enclosure bound at a first end by a flame deck surface of a cylinder head of an internal combustion engine and bound at a second end by a piston top surface of a piston disposed within the internal combustion engine. The system may further include a fuel injector, having at least one orifice, injecting fuel into the combustion chamber as at least one fuel jet. The system may further include at least one Venturi duct disposed within the combustion chamber between the flame deck surface and the piston top surface, the at least one Venturi duct being disposed such that each of the at least one fuel jet, at least partially, enters the at least one Venturi duct structure upon being injected into the combustion chamber.Type: ApplicationFiled: July 13, 2015Publication date: January 19, 2017Applicant: Caterpillar Inc.Inventor: Chad Koci
-
Publication number: 20170009712Abstract: A ducted combustion system is disclosed. The ducted combustion system may include a combustion chamber and a fuel injector in fluid connection with the combustion chamber and including at least one orifice opening from an injector tip of the fuel injector, the at least one orifice injecting fuel into the combustion chamber as at least one fuel jet. The system may further include at least one duct disposed within the combustion chamber such that the at least one fuel jet, at least partially, enters the at least one duct upon being injected into the combustion chamber. The system may further include a duct cooling system configured to cool a mixture of fuel and air of the at least one fuel jet.Type: ApplicationFiled: July 6, 2015Publication date: January 12, 2017Applicant: Caterpillar Inc.Inventors: Kenth Svensson, Chad Koci, Christopher Gehrke
-
Patent number: 9506439Abstract: A ducted combustion system is disclosed. The ducted combustion system includes a combustion chamber bound by a flame deck surface of a cylinder head of an internal combustion engine and by a piston top surface of a piston disposed within the internal combustion engine. The system includes a fuel injector including one or more orifices, the one or more orifices injecting fuel into the combustion chamber as one or more fuel jets. The system includes one or more adjustable length ducts disposed within the combustion chamber between the flame deck surface and the piston top surface, the one or more adjustable length ducts being disposed such that each of the one or more fuel jets, at least partially, enters one of the one or more adjustable length ducts upon being injected into the combustion chamber.Type: GrantFiled: April 13, 2015Date of Patent: November 29, 2016Assignee: Caterpillar Inc.Inventors: Jonathan Anders, Kenth Svensson, Chad Koci
-
Publication number: 20160298531Abstract: A ducted combustion system is disclosed. The ducted combustion system includes a combustion chamber bound by a flame deck surface of a cylinder head of an internal combustion engine and by a piston top surface of a piston disposed within the internal combustion engine. The system includes a fuel injector including one or more orifices, the one or more orifices injecting fuel into the combustion chamber as one or more fuel jets. The system includes one or more adjustable length ducts disposed within the combustion chamber between the flame deck surface and the piston top surface, the one or more adjustable length ducts being disposed such that each of the one or more fuel jets, at least partially, enters one of the one or more adjustable length ducts upon being injected into the combustion chamber.Type: ApplicationFiled: April 13, 2015Publication date: October 13, 2016Applicant: CATERPILLAR INC.Inventors: Jonathan Anders, Kenth Svensson, Chad Koci
-
Publication number: 20160298584Abstract: A ducted combustion system is disclosed. The ducted combustion system includes a combustion chamber bound by a flame deck surface of a cylinder head of an internal combustion engine and by a piston top surface of a piston disposed within the internal combustion engine. The system includes a fuel injector including at least one orifice, the at least one orifice injecting fuel into the combustion chamber as at least one fuel jet. The system includes at least one duct disposed within the combustion chamber between the flame deck surface and the piston top surface. The system includes an air injector configured to receive air from an outside source, independent of the combustion chamber, and inject the air into the combustion chamber proximate to the at least one duct.Type: ApplicationFiled: April 13, 2015Publication date: October 13, 2016Applicant: CATERPILLAR INC.Inventors: Kenth Svensson, Christopher Gehrke, Jonathan Anders, Chad Koci, Timothy Bazyn
-
Publication number: 20160298583Abstract: A ducted combustion system is disclosed. The ducted combustion system includes a combustion chamber bound by a flame deck surface of a cylinder head of an internal combustion engine and by a piston top surface of a piston disposed within the internal combustion engine. The system includes a fuel injector including one or more orifices, the one or more orifices injecting fuel into the combustion chamber as one or more fuel jets. The system includes one or more ducts disposed within the combustion chamber between the flame deck surface and the piston top surface, the one or more ducts being generally tubular shaped structures and being disposed such that each of the one or more fuel jets at least partially enters one of the one or more ducts upon being injected into the combustion chamber.Type: ApplicationFiled: April 13, 2015Publication date: October 13, 2016Applicant: Caterpillar Inc.Inventors: Jonathan Anders, Kenth Svensson, Bobby John, Chad Koci, Christopher Gehrke, Glen Martin, Timothy Bazyn