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公开(公告)号：US12297795B1
公开(公告)日：2025-05-13
申请号：US18732686
申请日：2024-06-04
Applicant: Caterpillar Inc.
Inventor： Eric L. Schroeder , Dana R. Coldren , Robert Graumüller , Kaushik Krishnamurthy , Dean C. Diers , Lifeng Wang , Jianhua Zhang
Abstract: A fuel injector in a fuel system having a first fuel supply of a first fuel and a second fuel supply of a second fuel includes a multifunctional control valve movable in the fuel injector to control admission of the first fuel to a combined-fuel outlet passage, and to control a timing and an injection pressure of a fuel charge containing the first fuel. In an embodiment the first fuel includes a compression-ignition fuel such as diesel and the second fuel includes an alcohol fuel such as methanol. Related apparatus and methodology is disclosed.
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2.发明申请公开(公告)号：US20200088146A1
公开(公告)日：2020-03-19
申请号：US16134170
申请日：2018-09-18
Applicant: Caterpillar Inc.
Inventor： Wade Robel , Thomas Jeffrey Crowell , Lifeng Wang
Abstract: A fuel injector includes an injector body, and a plunger movable within a plunger cavity in the injector body. The fuel injector also includes a spill valve positioned at least partially within a main fuel passage, a fill passage forming a fluid connection between the plunger cavity and the main fuel passage, and a cross passage forming a second fluid connection between the plunger cavity and the main fuel passage. The fuel injector also includes a metering edge within the plunger cavity and positioned such that the plunger passes the metering edge during pumping to the plunger for valvetrain noise suppression. A metering slot may be formed in the injector body or the plunger.
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公开(公告)号：US20170016416A1
公开(公告)日：2017-01-19
申请号：US14802162
申请日：2015-07-17
Applicant: Caterpillar Inc.
Inventor： Scott F. Shafer , Martin Lehman , Lifeng Wang , David E. Hackett , Taylor Tang , Andrew Marrack , Dennis H. Gibson
CPC classification number: F02M37/08 , F02D41/3082 , F02D41/3845 , F02D2041/3881 , F02D2200/0602 , F02M37/0047 , F02M37/0052 , F02M63/0225 , F02M63/0265 , F02M2037/087 , F02M2200/247
Abstract: A fluid injection system includes a fluid injector assembly; a fluid conditioning module having an outlet port that is fluidly coupled to an inlet port of the fluid injector assembly; an injector assembly outlet conduit fluidly coupled to an outlet port of the fluid injector assembly and disposed downstream of the fluid injector assembly, the injector assembly outlet conduit defining a pressure measurement port and a flow-restricting orifice, the pressure measurement port being disposed upstream of the flow-restricting orifice along the direction of fluid flow through the fluid injector assembly; a pressure sensor fluidly coupled to the pressure measurement port; and a controller operatively coupled to the fluid conditioning module and the pressure sensor. The controller is configured to adjust a flowrate of a fluid through the injector assembly inlet conduit based on a pressure signal from the pressure sensor.
Abstract translation: 流体注射系统包括流体注射器组件; 流体调节模块，其具有流体耦合到流体喷射器组件的入口的出口; 喷射器组件出口导管，其流体地联接到流体喷射器组件的出口并且设置在流体喷射器组件的下游，喷射器组件出口导管限定压力测量端口和限流孔口，压力测量端口设置在 所述流动限制孔口沿着流体流过所述流体喷射器组件的方向流动; 压力传感器，其流体地联接到所述压力测量端口; 以及可操作地耦合到流体调节模块和压力传感器的控制器。 控制器被配置成基于来自压力传感器的压力信号来调节通过喷射器组件入口导管的流体的流量。
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公开(公告)号：US20150198124A1
公开(公告)日：2015-07-16
申请号：US14154946
申请日：2014-01-14
Applicant: Caterpillar, Inc.
Inventor： David Elliot Hackett , Scott Shafer , Martin Lehman , Alan Willard Wells , Lifeng Wang
CPC classification number: F02M37/22 , F02M19/025 , F02M37/0052 , F02M37/0058 , F15D1/025
Abstract: An asymmetrical orifice for bypass control in a clean fuel module may include a body having first and second end surfaces and an inner surface defining a bore through the body extending from a first opening through the first end surface to a second opening through the second end surface. The first opening has a first opening inner diameter and the second opening has a second opening inner diameter that is less than the first opening inner diameter. The asymmetrical orifice also includes a flow control contour in the second end surface surrounding the second opening of the bore. The configuration may give the asymmetrical orifice a first discharge coefficient for fluid flowing from the first opening to the second opening that is greater than a second discharge coefficient for fluid flowing in a second direction from the second opening to the first opening
Abstract translation: 用于在清洁燃料模块中旁路控制的不对称孔口可以包括具有第一和第二端面的主体和限定穿过主体的孔的内表面，该孔从第一开口穿过第一端面延伸穿过第二端表面的第二开口 。 第一开口具有第一开口内径，第二开口具有小于第一开口内径的第二开口内径。 不对称孔口还包括围绕孔的第二开口的第二端表面中的流动控制轮廓。 该配置可以使非对称孔口具有用于从第一开口到第二开口流动的流体的第一排放系数，该第一排放系数大于用于在从第二开口到第一开口的第二方向上流动的流体的第二排放系数
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公开(公告)号：US12253041B1
公开(公告)日：2025-03-18
申请号：US18535083
申请日：2023-12-11
Applicant: Caterpillar Inc.
Inventor： Andrew O. Marrack , Lifeng Wang , Satya Naga Deepak Pillarisetti
IPC: F02D41/30
Abstract: Operating an engine system includes cold starting an engine, closing spill valves to pressurize fuel in a plurality of plunger cavities, opening injection valves in some of a plurality of fuel injectors to inject fuel into firing cylinders in an engine cycle, and opening spill valves in some of the plurality of fuel injectors while injection valves therein remain closed to bleed fuel to a lower pressure space in the engine cycle. The pressurization of fuel in the fuel injectors remaining closed parasitically loads the engine to increase a fuel burned amount hastening warm up and limiting misfire. Related apparatus and control logic is also disclosed.
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Patent Agency Ranking
公开(公告)号：US10975815B2
公开(公告)日：2021-04-13
申请号：US15985170
申请日：2018-05-21
Applicant: Caterpillar Inc.
Inventor： Wade James Robel , Thomas Jeffrey Crowell , Lifeng Wang
Abstract: A fuel system for an internal combustion engine includes a fuel system, a valve train, and a fuel injector including a cam actuated plunger. The fuel injector has a noise suppressor fluidly connecting a plunger cavity to each of a spill passage and a nozzle supply passage in the fuel injector. The noise suppressor has an inlet configuration forming a fuel admission flow area to the plunger cavity, and an outlet configuration forming a fuel discharge flow area. The fuel discharge flow area is smaller than the fuel admission flow area, and the noise suppressor adjusts to the outlet configuration to throttle discharging of fuel from the plunger cavity to limit valve train noise.
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公开(公告)号：US10760513B1
公开(公告)日：2020-09-01
申请号：US16389299
申请日：2019-04-19
Applicant: Caterpillar Inc.
Inventor： Spencer Huhn , Wade J. Robel , Lifeng Wang , Dana Coldren , Kevin Weiss
Abstract: A method of increasing parasitic load on an internal combustion engine includes injecting a fuel into a combustion chamber of an active cylinder of the internal combustion engine, combusting the injected fuel in the combustion chamber of the active cylinder, and determining that increasing a temperature of an exhaust aftertreatment device is required. The method includes increasing a parasitic load on the internal combustion engine by deactivating a cylinder, wherein no fuel is injected in the deactivated cylinder for a combustion cycle of the internal combustion engine, and further increasing the parasitic load by pulsing a spill valve member of a spill valve of a fuel injector in the deactivated cylinder between a fully closed position and an at least partially open position.
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公开(公告)号：US10570863B1
公开(公告)日：2020-02-25
申请号：US16134170
申请日：2018-09-18
Applicant: Caterpillar Inc.
Inventor： Wade Robel , Thomas Jeffrey Crowell , Lifeng Wang
Abstract: A fuel injector includes an injector body, and a plunger movable within a plunger cavity in the injector body. The fuel injector also includes a spill valve positioned at least partially within a main fuel passage, a fill passage forming a fluid connection between the plunger cavity and the main fuel passage, and a cross passage forming a second fluid connection between the plunger cavity and the main fuel passage. The fuel injector also includes a metering edge within the plunger cavity and positioned such that the plunger passes the metering edge during pumping to the plunger for valvetrain noise suppression. A metering slot may be formed in the injector body or the plunger.
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公开(公告)号：US10247122B1
公开(公告)日：2019-04-02
申请号：US15866711
申请日：2018-01-10
Applicant: Caterpillar Inc.
Inventor： Dana R Coldren , Ryan Thomas Sunley , Jianhua Zhang , Lifeng Wang
Abstract: An engine control system is structured for operating a turbocharged engine system and includes an electronic control unit. The electronic control unit is structured to switch the engine system from operation in a parasitically loaded mode where fuel pressurized by a fuel pump is dumped to a low pressure space, to operation in a second mode, where an engine load increase is detected. Turbocharger lag in the engine system is limited during increasing the engine load by way of exhaust energy produced in response to the parasitic loading. Related methodology is disclosed.
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公开(公告)号：US09797342B2
公开(公告)日：2017-10-24
申请号：US14525810
申请日：2014-10-28
Applicant: CATERPILLAR INC.
Inventor： Scott F. Shafer , Dennis Henderson Gibson , Lifeng Wang , Alan Ray Stockner
CPC classification number: F02M21/0233 , F02M21/0215 , F02M21/0242 , F02M21/0278 , Y02T10/32
Abstract: A port injection system for gaseous fuels may include an injector body defining a hydraulic fluid inlet chamber, a hydraulic fluid exit passageway, a hydraulic fluid actuation passageway, a check valve inlet passageway fluidly connected with the hydraulic fluid actuation passageway, a valve chamber, and a gaseous fuel inlet chamber. An electrical solenoid actuator may be mounted to the injector body, with the electrical solenoid actuator including a movable armature, and a poppet valve connected to the movable armature and disposed within the valve chamber. The poppet valve may be movable between a pressurized hydraulic fluid flow blocking position and a pressurized hydraulic fluid flow passing position. A check valve may be disposed within the check valve inlet passageway. A gas admission valve may be disposed at least partially within the gaseous fuel inlet chamber and in contact with the check valve such that movement of the check valve by hydraulic fluid entering the check valve inlet passageway results in actuation of the gas admission valve away from a normally closed position closing off the gaseous fuel inlet chamber to a fuel injection position wherein gaseous fuel is allowed to flow from the gaseous fuel inlet chamber into an intake manifold or intake port of an engine on which the injector body is mounted.
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