-
11.发明授权公开(公告)号：US12104546B2
公开(公告)日：2024-10-01
申请号：US17895551
申请日：2022-08-25
Applicant: Caterpillar Inc.
Inventor： Andrew Joseph Loetz , Jaswinder Singh , David Todd Montgomery
CPC classification number: F02D19/081 , F02D19/0602 , F02D19/0644
Abstract: Operating a gaseous fuel engine system includes conveying hydrogen fuel and hydrocarbon fuel into a cylinder in a gaseous fuel engine for combustion. Operating a gaseous fuel engine system further includes receiving an increased engine power output request, boosting a power output of the gaseous fuel engine by varying a ratio of the hydrogen fuel and the hydrocarbon fuel combusted in the cylinder, and varying an in-cylinder combustion parameter based on the varying a ratio. Perturbation to a performance profile of the gaseous fuel engine is thereby limited. Related apparatus and control logic is also disclosed.
-
公开(公告)号：US11566545B2
公开(公告)日：2023-01-31
申请号：US16401765
申请日：2019-05-02
Applicant: Caterpillar Inc.
Inventor： David Yu Zhang Chang , David Todd Montgomery , Scott Fiveland , Scott F. Shafer
Abstract: A gas engine is disclosed. The gas engine may include a combustion cylinder. The combustion cylinder may include an intake with an intake valve. The combustion cylinder may include an exhaust with an exhaust valve. The gas engine may include a gas admission valve assembly coupled to the intake. The gas admission assembly may include a trimmable electro-hydraulically actuatable gas admission valve to control a gas flow into the intake.
-
公开(公告)号：US20220243691A1
公开(公告)日：2022-08-04
申请号：US17167211
申请日：2021-02-04
Applicant: Caterpillar Inc.
Inventor： Eric Lee Schroeder , David Todd Montgomery , Dana Ray Coldren , Chad Koci
Abstract: 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.
-
公开(公告)号：US11384721B1
公开(公告)日：2022-07-12
申请号：US17167211
申请日：2021-02-04
Applicant: Caterpillar Inc.
Inventor： Eric Lee Schroeder , David Todd Montgomery , Dana Ray Coldren , Chad Koci
Abstract: 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.
-
公开(公告)号：US11933240B2
公开(公告)日：2024-03-19
申请号：US17734625
申请日：2022-05-02
Applicant: Caterpillar Inc.
Inventor： Kenth I Svensson , David Todd Montgomery
IPC: F02D41/14 , F02D41/00 , F02M25/022 , F02M25/03 , F02M25/035
CPC classification number: F02D41/1461 , F02D41/0027 , F02D41/1406 , F02M25/0227 , F02M25/035 , F02D2250/36
Abstract: Operating an internal combustion engine system includes feeding a stream of pressurized intake air to a plurality of cylinders in an engine for combustion with a methanol fuel. An engine parameter indicative of at least one of an exhaust NOx level or a change to the exhaust NOx level of the engine is monitored, and water injected into an intake conduit for the engine based on the monitored engine parameter to limit the exhaust NOx level of the engine. Related apparatus and control logic is disclosed.
-
Patent Agency Ranking
公开(公告)号：US20240044308A1
公开(公告)日：2024-02-08
申请号：US18490231
申请日：2023-10-19
Applicant: Caterpillar Inc.
Inventor： Eric Lee Schroeder , David Todd Montgomery , Dana Ray Coldren , Chad Koci
CPC classification number: F02M43/04 , F02D19/0694 , F02D19/0649 , F02D19/10
Abstract: 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.
-
公开(公告)号：US20230358186A1
公开(公告)日：2023-11-09
申请号：US17737528
申请日：2022-05-05
Applicant: Caterpillar Inc.
CPC classification number: F02D41/0027 , F02D41/1452
Abstract: Operating an engine system includes combusting a gaseous hydrogen fuel (H2) and a gaseous hydrocarbon fuel (HC) at a first substitution ratio in a cylinder in an engine, determining at least one of an H2 fueling command or an HC fueling command based on an H2 availability input and an H2 cost, and outputting the H2 fueling command and the HC fueling command to an H2 injector and an HC admission valve, respectively. Operating the engine system further includes combusting H2 and HC at a varied substitution ratio based on the H2 fueling command and the HC fueling command. At least one of the H2 fueling command or the HC fueling command may be based on a monitored CO2 exhaust level which may be used to populate a stored history of CO2 output.
-
公开(公告)号：US11415034B2
公开(公告)日：2022-08-16
申请号：US17101745
申请日：2020-11-23
Applicant: Caterpillar Inc.
Inventor： David Todd Montgomery
Abstract: An aftertreatment system for treatment of exhaust gases exiting an engine includes a first Selective Catalytic Reduction (SCR) device in fluid communication with the engine. The first SCR device receives the exhaust gases exiting the engine for reducing a first quantity of oxides of nitrogen (NOx) present in the exhaust gases. The aftertreatment system also includes an oxidation catalyst in fluid communication with the first SCR device. The oxidation catalyst receives the exhaust gases exiting the first SCR device for oxidizing ammonia present in the exhaust gases into a second quantity of NOx. The aftertreatment system further includes a second SCR device in fluid communication with the oxidation catalyst. The second SCR device receives the exhaust gases exiting the oxidation catalyst for reducing the second quantity of NOx.
-
公开(公告)号：US11384708B1
公开(公告)日：2022-07-12
申请号：US17355680
申请日：2021-06-23
Applicant: Caterpillar Inc.
Inventor： Eric Lee Schroeder , David Todd Montgomery , Arnold Myoungjin Kim , Michael Bardell , Nikolas Karl Landin , Kenth I. Svensson
IPC: F02D41/30 , F02D19/06 , F02M35/104 , F02M31/20
Abstract: Operating an engine includes injecting a liquid alcohol fuel such as methanol into a stream of compressed intake air at an upstream injection location, and injecting the liquid fuel at a plurality of downstream injection locations into a plurality of streams of the compressed intake air from an intake manifold to combustion cylinders in the engine. A fueling control unit apportions a total injected quantity of the liquid fuel between the upstream injection location and the plurality of downstream injection locations based on a temperature parameter of the compressed intake air. The compressed intake air is combusted with the liquid fuel and a compression ignition pilot fuel in the plurality of combustion cylinders.
-
公开(公告)号：US11365712B2
公开(公告)日：2022-06-21
申请号：US16949742
申请日：2020-11-12
Applicant: Caterpillar Inc.
Inventor： David Todd Montgomery , Greg Hampson
Abstract: A controller for a dedicated exhaust gas recirculation (D-EGR) engine is disclosed. The controller may receive a plurality of cylinder pressure signals, each of which is associated with a respective cylinder in a plurality of cylinders of the D-EGR engine. The plurality of cylinders includes at least one donor cylinder and a set of non-donor cylinders. The controller may receive a crankshaft angle signal associated with a crankshaft of the D-EGR engine. The controller may selectively adjust ignition timing of a cylinder, of the plurality of cylinders, based on the crankshaft angle signal and a cylinder pressure signal, of the plurality of cylinder pressure signals, associated with the cylinder; or a fuel rate of the at least one donor cylinder based on the crankshaft angle signal and a set of cylinder pressure signals, of the plurality of cylinder pressure signals, associated with the set of non-donor cylinders.
-
-
-
-
-
-
-
-
-
Search Results
20
records
(took 0.015 seconds)
