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公开(公告)号：US20240200513A1
公开(公告)日：2024-06-20
申请号：US18082099
申请日：2022-12-15
Applicant: Caterpillar Inc.
Inventor： Jonathan W. Anders , Bobby John , Chad Palmer Koci , Naga Krishna Chaitanya Kavuri
CPC classification number: F02M21/023 , F02F1/24 , F02F2001/244
Abstract: A gaseous fuel engine includes an engine housing having a cylinder block with a combustion cylinder therein, and an engine head including an intake port, an exhaust port, a fuel port, and an igniter bore, each extending to a fire deck. The gaseous fuel engine includes a fuel admission valve movable to close and open the fuel port. A non-axisymmetric clearance is defined between an inner port surface and the fuel admission valve and directionally biases a flow of gaseous fuel from the fuel port. Related methodology is also disclosed.
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公开(公告)号：US20210040925A1
公开(公告)日：2021-02-11
申请号：US16531826
申请日：2019-08-05
Applicant: Caterpillar Inc. , Perkins Engines Company Limited
Inventor： Bobby John , Robert Michael Campion , Jonathan W. Anders
Abstract: 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.
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公开(公告)号：US10900450B1
公开(公告)日：2021-01-26
申请号：US16531826
申请日：2019-08-05
Applicant: Caterpillar Inc. , Perkins Engines Company Limited
Inventor： Bobby John , Robert Michael Campion , Jonathan W. Anders
Abstract: 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.
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公开(公告)号：US10823106B1
公开(公告)日：2020-11-03
申请号：US16410269
申请日：2019-05-13
Applicant: Caterpillar Inc.
Inventor： Bobby John , Jonathan W. Anders
Abstract: 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.
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5.发明申请公开(公告)号：US20200277925A1
公开(公告)日：2020-09-03
申请号：US16289594
申请日：2019-02-28
Applicant: Caterpillar Inc.
Inventor： Bobby John , Jonathan Anders
Abstract: Operating a dual fuel engine system includes igniting a main charge of gaseous fuel in response to combustion of an early pilot shot of liquid fuel and production of a spark. Operating the system also includes covarying a spark timing parameter and a pilot shot delivery parameter, and reducing an error in a phasing of combustion of another main charge based on the covarying of the spark timing parameter and the pilot shot delivery parameter.
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Patent Agency Ranking
公开(公告)号：US20190128228A1
公开(公告)日：2019-05-02
申请号：US15796916
申请日：2017-10-30
Applicant: Caterpillar Inc.
Inventor： Bobby John , Glen Martin , Jonathan W. Anders , Robert Campion
CPC classification number: F02M47/06 , F02M55/002 , F02M57/02 , F02M61/1886 , F02M63/0043 , F02M2200/46
Abstract: A fuel system includes a fuel injector having a fuel passage and a purging fluid passage formed therein. A nozzle tip inner surface defines a sac forming a blind end of the fuel passage in the fuel injector. A coaxial concentric check assembly includes a purging check movable to admit a purging fluid such as pressurized air into the fuel passage to purge the sac of fuel. Reduced injector dribble is observed from the purging of fuel.
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公开(公告)号：US20160298583A1
公开(公告)日：2016-10-13
申请号：US14685264
申请日：2015-04-13
Applicant: Caterpillar Inc.
Inventor： Jonathan Anders , Kenth Svensson , Bobby John , Chad Koci , Christopher Gehrke , Glen Martin , Timothy Bazyn
CPC classification number: F02M55/00 , F02M61/14 , F02M61/1806 , F02M61/1813 , F02M61/182 , F02M61/1833
Abstract: 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.
Abstract translation: 公开了管道燃烧系统。 管道燃烧系统包括由内燃机的气缸盖的火焰甲板表面和设置在内燃机内的活塞的活塞顶表面结合的燃烧室。 该系统包括一个燃料喷射器，该燃料喷射器包括一个或多个喷孔，一个或多个喷嘴将燃料喷射到燃烧室中作为一个或多个燃料喷射。 该系统包括设置在火焰甲板表面和活塞顶表面之间的燃烧室内的一个或多个管道，一个或多个管道通常是管状结构，并且被布置成使得一个或多个燃料喷嘴中的每一个至少部分地进入 一个或多个管道中的一个被注入到燃烧室中。
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8.发明申请REACTIVITY CONTROLLED COMPRESSION IGNITION ENGINE AND METHOD OF COMBUSTION PHASING CONTROL 审中-公开反应控制压缩点火发动机和燃烧相位控制方法公开(公告)号：US20150285178A1
公开(公告)日：2015-10-08
申请号：US14243181
申请日：2014-04-02
Applicant: Caterpillar Inc.
Inventor： Bobby John
CPC classification number: F02D41/0025 , F02D19/10 , F02D21/08 , F02D35/023 , F02D41/005 , F02D41/107 , F02D41/3047 , F02D41/402 , Y02T10/36 , Y02T10/44 , Y02T10/47
Abstract: A reactivity controlled compression ignition engine compression ignites a stratified reactivity charge mixture, of recirculated exhaust gas, air, a low reactivity fuel and a high reactivity fuel. During steady state operating conditions, combustion phasing control includes adjusting an exhaust gas recirculation (EGR) rate relative to a base EGR rate associated with the steady speed and load. When transitioning to a new speed and load during a transient condition, combustion phasing control does not utilize EGR rate control, but does include adjustments to quantities and timings of at least three injection sequences of the high reactivity fuel.
Abstract translation: 反应性控制的压缩点火发动机压缩点燃分层反应性电荷混合物，再循环废气，空气，低反应性燃料和高反应性燃料。 在稳态运行条件下，燃烧定相控制包括相对于与稳定速度和负载相关联的基本EGR率来调节废气再循环（EGR）速率。 当在瞬态条件下转变到新的速度和负载时，燃烧定相控制不利用EGR率控制，而是包括对高反应性燃料的至少三个喷射序列的量和定时的调整。
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公开(公告)号：US12209560B1
公开(公告)日：2025-01-28
申请号：US18639212
申请日：2024-04-18
Applicant: Caterpillar Inc.
Inventor： Jonathan Anders , Bobby John , Kenth I. Svensson , Naga Krishna Chaitanya Kavuri , William J. Barnes
Abstract: A gaseous fuel engine system includes an engine housing forming a plurality of intake ports, and a plurality of fuel admission tubes oriented to admit a gaseous fuel into the plurality of intake ports. The fuel admission tubes include mixers having flow-impinged surfaces exposed to at least one of a flow of gaseous fuel or a flow of intake air and each including a detachment edge. The mixers may include fins, wedge structures, and/or a contoured outer surface of the fuel admission tube. Related apparatus and methodology is also disclosed.
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公开(公告)号：US12078129B2
公开(公告)日：2024-09-03
申请号：US18082099
申请日：2022-12-15
Applicant: Caterpillar Inc.
Inventor： Jonathan W. Anders , Bobby John , Chad Palmer Koci , Naga Krishna Chaitanya Kavuri
CPC classification number: F02M21/023 , F02F1/24 , F02F2001/244
Abstract: A gaseous fuel engine includes an engine housing having a cylinder block with a combustion cylinder therein, and an engine head including an intake port, an exhaust port, a fuel port, and an igniter bore, each extending to a fire deck. The gaseous fuel engine includes a fuel admission valve movable to close and open the fuel port. A non-axisymmetric clearance is defined between an inner port surface and the fuel admission valve and directionally biases a flow of gaseous fuel from the fuel port. Related methodology is also disclosed.
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