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31.发明授权Gaseous common rail fuel system and high compression ratio engine using same 有权气体共轨燃油系统和高压缩比发动机使用相同公开(公告)号：US09200560B2
公开(公告)日：2015-12-01
申请号：US13739115
申请日：2013-01-11
Applicant: Caterpillar Inc.
Inventor： Dana R. Coldren , Cory A. Brown , Martin L. Willi
CPC classification number: F02B19/12 , F02M21/0245 , F02M21/0275 , F02M21/0281 , Y02T10/32
Abstract: A gaseous fuel engine combines the efficiencies associated with high compression ratio engines with the attractiveness of fueling with natural gas. Each engine cylinder has an associated fuel injector positioned for direct injection and supplied with gaseous fuel from a high pressure common rail. A separate ignition prechamber is also supplied with natural gas and includes an ignition device. Hot gas generated by igniting a mixture of gaseous fuel and air in the prechamber are used to ignite a much larger charge of gaseous fuel injected into the engine cylinder from the fuel injector. The engine has a compression ratio greater than 14: to 1.
Abstract translation: 气体燃料发动机将与高压缩比发动机相关联的效率与天然气加燃料的吸引力相结合。 每个发动机气缸具有相关联的燃料喷射器，定位用于直接喷射并从高压共轨供应气态燃料。 单独的点火前置机还配有天然气，并包括点火装置。 通过点燃预燃室中的气体燃料和空气的混合物而产生的热气体用于点燃从燃料喷射器喷射到发动机气缸中的更大量的气体燃料。 发动机的压缩比大于14：1。
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公开(公告)号：US20140346254A1
公开(公告)日：2014-11-27
申请号：US14453646
申请日：2014-08-07
Applicant: Caterpillar Inc.
Inventor： Dana R. Coldren , Alan R. Stockner , David T. Montgomery
CPC classification number: F02M55/002 , F02D19/0694 , F02M43/04 , F02M47/027 , Y02T10/36
Abstract: A fuel injector comprises a liquid fuel cavity and a gas fuel cavity disposed within an injector cavity housing a liquid needle valve stem and a gas needle valve stem, respectively. The gas needle valve stem includes a guide stem portion distal to the injector tip and a check proximal to the injector tip. A drain passage terminates in a drain annulus groove disposed in a guide cavity wall of a gas valve guide cavity. The gas valve guide cavity houses the guide stem portion defining a clearance between the guide cavity wall below the drain annulus groove and the guide stem portion. The liquid fuel from the drain passage flows to the gas needle valve stem and an inner surface of the gas fuel cavity, through the clearance. The liquid fuel drained through the clearance collects in a plurality of grooves on the check.
Abstract translation: 燃料喷射器包括液体燃料腔和设置在分别容纳液体针阀杆和气针阀杆的注射器腔内的气体燃料腔。 气针阀杆包括远离喷射器尖端的导杆部分和靠近喷射器尖端的支架。 排水通道终止于设置在气阀导向腔的引导腔壁中的排水环形槽。 气阀导向腔容纳导向杆部分，该导向杆部分在排水环形槽下方的引导腔壁与引导杆部分之间形成间隙。 来自排水通道的液体燃料通过间隙流到气针阀杆和气体燃料腔的内表面。 通过间隙排出的液体燃料收集在支票上的多个凹槽中。
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公开(公告)号：US20180347560A1
公开(公告)日：2018-12-06
申请号：US15609493
申请日：2017-05-31
Applicant: Caterpillar Inc.
Inventor： Alan Stockner , Aaron M. Brown , Sridhar Thangaswamy , Dana R. Coldren , Dennis Gibson
IPC: F04B53/14
Abstract: A pushrod assembly 5 may include a seal carrier 50 for a spaced seal assembly 60 and/or a seal carrier 70 for a stacked seal assembly 74, the spaced seal assembly including first and second annular seals 61, 62 separated by a spacer 63 to isolate between the seals a vented region 28 of the pushrod housing 6, the stacked seal assembly including at least two annular seals 80 stacked on the seal carrier. Each seal assembly can be removed and replaced via an access end 52, 72 of the seal carrier after detaching the access end from an adjacent component of the assembly. The seal carriers may be incorporated into a cryogenic pump 2 wherein at least one annular seal is arranged on each seal carrier to seal the pushrod assembly 5 within its housing 6.
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公开(公告)号：US10006449B2
公开(公告)日：2018-06-26
申请号：US14597019
申请日：2015-01-14
Applicant: Caterpillar Inc.
Inventor： Bryan E. Nelson , Daniel R. Baldwin , Alan R. Stockner , Robert M. Campion , Cory A. Brown , Joshua W. Steffen , Dana R. Coldren , Sana Mahmood
CPC classification number: F04B27/1054 , F04B27/1063 , F04B37/08 , F16C19/06 , F16C19/30 , F16C19/547 , F16C23/086 , F16C2360/00
Abstract: A bearing arrangement for a wobble plate piston pump includes first, second, third, and fourth bearing assemblies. The first and second bearing assemblies support the drive shaft portion for rotation within the housing about the central longitudinal axis, while the third and fourth bearing assemblies support the load plate for rotation relative to the offset shaft portion of the shaft. The second bearing assembly is distally disposed from the first, the third disposed distally to second, and the fourth disposed distally to third. The fourth bearing assembly is the most distally disposed bearing assembly along the shaft.
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公开(公告)号：US09909576B2
公开(公告)日：2018-03-06
申请号：US14603898
申请日：2015-01-23
Applicant: Caterpillar Inc.
Inventor： Cory A. Brown , Bryan E. Nelson , Dana R. Coldren
CPC classification number: F04B9/109 , F04B1/16 , F04B15/08 , F04B19/22 , F04B37/08 , F04B39/0005 , F04B53/14 , F04B53/16 , F04B2015/081
Abstract: A cryogenic pump comprising a shaft disposed in a bearing. The shaft rotates with respect to the bearing housing, and the shaft includes an end with an angled face. The pump includes a drive at one end of the bearing housing. A tappet passage is formed through the drive housing. A pushrod housing connects to the drive housing. The pump includes a piston and a tappet sliding within the tappet passage. The tappet has a base end disposed within the tappet passage and a rod end extending below the tappet end of the drive housing. A fluid cavity is in the tappet passage between the piston and the tappet. The pump includes a pushrod connected to the tappet. The angled face of the shaft rotates and drives the piston toward the drive housing, pushing fluid within the fluid cavity against the tappet, driving the pushrod away from the drive housing.
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Patent Agency Ranking
公开(公告)号：US09664122B2
公开(公告)日：2017-05-30
申请号：US14807947
申请日：2015-07-24
Applicant: Caterpillar, Inc.
Inventor： Dana R. Coldren , Cory A. Brown
CPC classification number: F02D19/0642 , F02D19/0694 , F02D19/08 , F02D19/10 , F02M43/04 , F02M45/086 , F02M47/027 , Y02T10/36
Abstract: A dual fuel engine utilizes a compression ignited pilot injection of liquid diesel fuel to ignite a mixture of gaseous fuel and air in each engine cylinder. The gaseous fuel is injected at a relatively low pressure directly into the engine cylinder from a fuel injector. The liquid diesel fuel is injected directly into the engine cylinder from the same fuel injector. In-cylinder dynamic gas blending during the compression stroke can reduce potential hydrocarbon slip that could occur when unburned fuel resides in crevice volumes within the engine cylinder.
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公开(公告)号：US20170016434A1
公开(公告)日：2017-01-19
申请号：US14798058
申请日：2015-07-13
Applicant: CATERPILLAR INC.
Inventor： Joshua W. Steffen , Dana R. Coldren
CPC classification number: F04B15/08 , F04B9/113 , F04B9/1172 , F04B53/04 , F04B2015/081
Abstract: A pump has a pump body and at least first and second pumping elements, each pumping element including a piston defining a head-end and a rod-end. The pump receives a pressurized fluid at an inlet, and returns fluid through a drain outlet. A hydraulic distributor operates to fluidly connect the head end of an extending piston to the pressurized fluid, and the rod end of the extending piston to the drain outlet. The hydraulic distributor further connects the rod-end of a retracting piston to the drain outlet, and the rod-end of one or more retracting pistons to the drain or to a return pressure, which is lower than an extending pressure.
Abstract translation: 泵具有泵体和至少第一和第二泵送元件，每个泵送元件包括限定头端和杆端的活塞。 泵在入口处接收加压流体，并通过排水口返回流体。 液压分配器用于将延伸活塞的头端流体连接到加压流体，并且延伸活塞的杆端流体到排出口。 液压分配器还将回缩活塞的杆端连接到排水出口，将一个或多个回缩活塞的杆端连接到排水口或低于延伸压力的返回压力。
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公开(公告)号：US09371784B2
公开(公告)日：2016-06-21
申请号：US13725161
申请日：2012-12-21
Applicant: Caterpillar Inc.
Inventor： Joshua W. Steffen , Dana R. Coldren
CPC classification number: F02D19/06 , B64C27/51 , F02D19/024 , F02D19/027 , F02M37/0041 , Y02T10/32 , Y02T10/36
Abstract: A dual fuel system for an engine is disclosed. The dual fuel system may have a first fuel supply providing a first fuel to the engine, and a second fuel supply providing a second fuel. The dual fuel system may also have a regulator configured to pass the second fuel from the second fuel supply to the engine, with the regulator also in fluid communication with the first fuel supply. The dual fuel system may further have a damper in fluid communication with the first fuel supply and an output of the regulator.
Abstract translation: 公开了一种用于发动机的双燃料系统。 双燃料系统可以具有向发动机提供第一燃料的第一燃料供应和提供第二燃料的第二燃料供应。 双燃料系统还可以具有调节器，其被配置为将第二燃料从第二燃料供应传递到发动机，调节器也与第一燃料供应流体连通。 双燃料系统还可以具有与第一燃料供应和调节器的输出流体连通的阻尼器。
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公开(公告)号：US09228507B2
公开(公告)日：2016-01-05
申请号：US13732673
申请日：2013-01-02
Applicant: Caterpillar Inc.
Inventor： Cory A. Brown , Joshua W. Steffen , Dana R. Coldren , Alan R. Stockner , Hoisan Kim , Dianqi Fang
Abstract: A dual fuel common rail system may be operated in a regular mode in which a relatively large charge of gaseous fuel is ignited by compression igniting a relatively small injection quantity of liquid diesel fuel. The dual fuel system may be operated in a single fuel limp home mode in which liquid diesel fuel is injected at higher pressures. Over pressurization of the gaseous fuel side of the fuel system due to leaked liquid fuel is avoided by regularly injecting leaked liquid fuel, but not gaseous fuel, from the gaseous nozzle outlet set during the limp home mode of operation.
Abstract translation: 双燃料共轨系统可以以常规模式操作，其中相对较大量的气体燃料通过压缩点燃，点燃相对较小量的液体柴油燃料。 双燃料系统可以在单一燃料跛行家庭模式中操作，其中液体柴油燃料在较高压力下喷射。 由于泄漏的液体燃料，燃料系统的气体燃料侧的过度加压通过在跛行家庭操作模式期间从设置的气体喷嘴出口定期注入泄漏的液体燃料而不是气体燃料来避免。
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40.发明授权Debris robust fuel injector with co-axial control valve members and fuel system using same 有权具有同轴控制阀构件和使用其的燃料系统的碎屑牢固的燃料喷射器公开(公告)号：US09212639B2
公开(公告)日：2015-12-15
申请号：US13667650
申请日：2012-11-02
Applicant: Caterpillar, Inc.
Inventor： Hoisan Kim , Dana R. Coldren , Mayank Mittal
CPC classification number: F02M43/04 , F02D19/0689 , F02D19/0694 , F02D19/10 , F02M21/0281 , F02M45/086 , F02M63/0035 , F02M2200/44 , Y02T10/32 , Y02T10/36
Abstract: A dual fuel injector utilizes first and second control valves to open and close first and second nozzle outlet sets to inject a first fuel and a second fuel, respectively. The first and second control valves have concentric lines of action, and include a self alignment feature with respect to a flat seat. The two fuels may differ in at least one of chemical identity, matter phase and pressure.
Abstract translation: 双燃料喷射器利用第一和第二控制阀打开和关闭第一和第二喷嘴出口组，以分别注入第一燃料和第二燃料。 第一和第二控制阀具有同心的作用线，并且包括相对于平的座椅的自对准特征。 这两种燃料可能在化学特性，物质相和压力中至少有一种不同。
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