公开(公告)号：US09657653B2

公开(公告)日：2017-05-23

申请号：US14299185

申请日：2014-06-09

申请人： Caterpillar Inc

发明人： Behnaz Ensan ,  Steven Thomas Grant ,  Matthew Benjamin Yandell ,  Hardikkumar Shah ,  Sunil Jefferey Bean

IPC分类号： F02D19/06 ,  G01L13/00 ,  F02D41/00 ,  F02D41/38 ,  F02D19/10 ,  F02D41/22

CPC分类号： F02D19/0628 ,  F02D19/0647 ,  F02D19/105 ,  F02D41/0027 ,  F02D41/3836 ,  F02D2041/224 ,  F02D2200/0602 ,  G01L13/00 ,  Y02T10/36

摘要： A system and method for detecting pressure deviation of a first fluid in an engine is disclosed. The method may comprise calculating, for each of a plurality of measurements, a delta between an actual first fluid pressure and a target pressure, summing each delta obtained from the calculating, and determining pressure deviation of the first fluid based on a cumulative sum of the deltas. In an embodiment, the first fluid may be natural gas.

公开(公告)号：US09556805B2

公开(公告)日：2017-01-31

申请号：US14625125

申请日：2015-02-18

申请人： Caterpillar Inc.

发明人： David Kalu Mumford ,  Josh Steffen ,  Derek Puzzuoli

IPC分类号： F02D19/06 ,  F02M43/02

CPC分类号： F02D19/0605 ,  F02D19/0673 ,  F02D19/105 ,  F02D41/0025 ,  F02D41/0027 ,  F02M43/02 ,  Y02T10/36

摘要： An improved fuel system for a dual-fuel internal combustion engine. During normal operation, the primary fuel passes through a pressure regulator before arriving at a primary fuel rail. Further, pressurized secondary fuel is delivered to both a secondary fuel rail and to the pressure regulator for purposes of regulating the output pressure of the primary fuel that is delivered to the primary fuel rail. When the pressure at the primary fuel supply or between the primary fuel supply and the pressure regulator drops below a minimum operating pressure, the pressure regulator is isolated from the secondary fuel and the secondary fuel continues to be pressurized until it reaches a suitable pressure for operating in a limp mode. Then, the secondary fuel, which is pressurized to greater than a normal operating pressure, may be injected at the higher pressure for improved performance of the engine in the limp mode.

摘要翻译： 一种用于双燃料内燃机的改进的燃料系统。 在正常操作期间，主燃料在到达主燃料轨之前通过压力调节器。 此外，为了调节输送到主燃料轨的主要燃料的输出压力，加压二次燃料被输送到二次燃料轨和压力调节器。 当主要燃料供应或主要燃料供应和压力调节器之间的压力下降到最低工作压力以下时，压力调节器与次级燃料隔离，并且次级燃料继续被加压，直到达到合适的压力以进行操作 处于跛脚模式。 然后，被加压到大于正常工作压力的二次燃料可以以更高的压力喷射，以改善发动机在跛行模式下的性能。

公开(公告)号：US09482167B2

公开(公告)日：2016-11-01

申请号：US14175739

申请日：2014-02-07

申请人： Caterpillar Paving Products Inc.

发明人： Yanchai Zhang ,  Mallikharjuna R. Boddu ,  Evan E. Jacobson

IPC分类号： F02M1/00 ,  F02D41/00 ,  F02D41/04 ,  F02M21/02 ,  H02J7/34 ,  F02D19/06 ,  F02D19/10

CPC分类号： F02D41/0027 ,  F02D19/0684 ,  F02D19/105 ,  F02D41/0025 ,  F02D41/04 ,  F02D41/3082 ,  F02M21/0224 ,  F02M21/0245 ,  H02J7/007 ,  H02J7/34 ,  Y02T10/32 ,  Y02T10/36

摘要： In an engine system of a machine having a multi fuel engine system, an energy accumulator is provide to accumulate and store energy when the engine system is in a low engine power usage or low engine load state, and to discharge energy from the energy accumulator when the engine system is in a high engine usage or high engine load state. The energy accumulator may be implemented, for example, in the form of a gaseous fuel accumulator that delivers gaseous fuel to the engine, a hydraulic fuel accumulator that provides pressurized fluid to power a fuel pump, or a battery pack that powers an electric hydraulic pump.

摘要翻译： 在具有多燃料发动机系统的机器的发动机系统中，当发动机系统处于低发动机功率使用或低发动机负载状态时，提供蓄能器以累积和储存能量，并且当能量蓄能器 发动机系统处于高发动机使用状态或高发动机负载状态。 蓄能器可以例如以将气态燃料输送到发动机的气体燃料蓄积器的形式，提供加压流体来为燃料泵供电的液压燃料蓄能器或为电动液压泵供电的电池组 。

公开(公告)号：US09464583B2

公开(公告)日：2016-10-11

申请号：US14174276

申请日：2014-02-06

申请人： Cummins Inc.

发明人： Axel Otto zur Loye ,  Geomy George ,  Timothy P. Lutz ,  Steven J. Kolhouse ,  C. Larry Bruner

IPC分类号： F02D13/02 ,  F02D19/06 ,  F02D41/00 ,  F02M25/07 ,  F02B3/06 ,  F02D19/10 ,  F02D35/02 ,  F02B37/16 ,  F02B37/18

CPC分类号： F02D19/081 ,  F02B3/06 ,  F02B37/16 ,  F02B37/18 ,  F02B37/183 ,  F02D9/02 ,  F02D13/0215 ,  F02D19/0626 ,  F02D19/0647 ,  F02D19/105 ,  F02D35/023 ,  F02D35/027 ,  F02D41/0002 ,  F02D41/0007 ,  F02D41/0025 ,  F02D41/0027 ,  F02D2041/001 ,  F02M26/05 ,  F02M26/06 ,  F02M26/24 ,  F02M26/25 ,  Y02T10/18 ,  Y02T10/36 ,  Y02T10/42

摘要： Systems and methods for controlling operation of dual fuel internal combustion engines in response to cylinder pressure based determinations are disclosed. The techniques control fuelling contributions from a first fuel source and a second fuel source to achieve desired operational outcomes in response to the cylinder pressure based determinations.

摘要翻译： 公开了用于响应于基于气缸压力的确定来控制双燃料内燃机的操作的系统和方法。 这些技术控制来自第一燃料源和第二燃料源的燃料贡献，以响应于基于汽缸压力的确定实现期望的运行结果。

公开(公告)号：US20160097338A1

公开(公告)日：2016-04-07

申请号：US14858474

申请日：2015-09-18

申请人： GE Jenbacher GmbH & Co OG

发明人： Friedrich GRUBER ,  Nikolaus SPYRA ,  Christian TRAPP ,  Georg TINSCHMANN ,  Ettore MUSU

IPC分类号： F02D41/30 ,  F02D19/10 ,  F02D19/06 ,  F02B1/14 ,  F02B7/04

CPC分类号： F02D41/3047 ,  F02B1/14 ,  F02B7/04 ,  F02D19/0642 ,  F02D19/0647 ,  F02D19/105 ,  F02D41/0025 ,  F02D41/0027 ,  Y02T10/36

摘要： A method of operating a compression ignition engine uses an engine having a cylinder and a piston moveable in the cylinder. The method includes forming a combustible mixture by mixing generally homogeneously a first fuel and air and introducing this mixture into the at least one cylinder, and compressing the combustible mixture with the piston in a compression stroke. During the compression stroke but before start of combustion, a second fuel is added to the combustible mixture, thus creating a cylinder charge, the second fuel being easier to autoignite than the first fuel. The compression stroke is continued until combustion starts at those locations in the cylinder where concentration of the second fuel and/or temperature of the mixture is highest. A temperature of the cylinder charge and/or the amount of second fuel added to the combustible mixture is chosen such that a desired duration of combustion can be achieved.

摘要翻译： 一种压缩点火式发动机的操作方法是使用具有可在气缸内移动的气缸和活塞的发动机。 该方法包括通过大体上均匀地混合第一燃料和空气并将该混合物引入到至少一个气缸中，并在压缩行程中与活塞一起压缩可燃混合物来形成可燃混合物。 在压缩冲程期间，但是在开始燃烧之前，将第二燃料添加到可燃混合物中，从而产生汽缸充气，第二燃料比第一燃料更容易自燃。 在第二燃料的浓度和/或混合物的温度最高的气缸中的那些位置持续燃烧开始燃烧。 气瓶加料温度和/或添加到可燃混合物中的第二种燃料的量被选择为使得能够实现期望的燃烧持续时间。

公开(公告)号：US09303610B2

公开(公告)日：2016-04-05

申请号：US13991067

申请日：2011-11-30

申请人： David Jay

发明人： David Jay

IPC分类号： F02M63/02 ,  F02M43/04 ,  F02M45/08 ,  F02M55/04

CPC分类号： F02M63/0225 ,  F02D19/0694 ,  F02D19/105 ,  F02M43/04 ,  F02M45/086 ,  F02M55/04 ,  F02M2200/315 ,  F02M2200/40 ,  F02M2200/44

摘要： A novel fuel injection unit for a large internal combustion engine includes a common rail fuel system. The fuel injection unit of the invention is constructed of at least a high pressure fuel accumulator specific for the fuel injection unit, a flow fuse, a first fuel injection valve with a control valve, and a second fuel injection valve with a control valve. The first fuel injection valve is a smaller one used for injecting at most 30% of the fuel required in full load operation of a diesel mode.

摘要翻译： 一种用于大型内燃机的新型燃料喷射单元包括共轨燃料系统。 本发明的燃料喷射单元由至少一个专用于燃料喷射单元的高压燃料蓄积器，流量保险丝，具有控制阀的第一燃料喷射阀和具有控制阀的第二燃料喷射阀构成。 第一个燃油喷射阀是一个较小的燃油喷射阀，用于在柴油机模式的全负载运行中喷射至多30％的燃油。

公开(公告)号：US09279391B2

公开(公告)日：2016-03-08

申请号：US13868339

申请日：2013-04-23

申请人： Caterpillar Inc.

发明人： Dianqi Fang ,  Daniel Puckett

IPC分类号： F02M43/04 ,  F02M21/02 ,  F02D19/06 ,  F02D19/10 ,  F02M47/02 ,  F02M55/00 ,  F02M55/02 ,  F02M63/02 ,  F02M63/00

CPC分类号： F02M21/0284 ,  F02D19/0621 ,  F02D19/0647 ,  F02D19/0694 ,  F02D19/105 ,  F02M21/0281 ,  F02M43/04 ,  F02M47/027 ,  F02M55/002 ,  F02M55/02 ,  F02M63/0019 ,  F02M63/0064 ,  F02M63/0295 ,  F02M2200/44 ,  Y02T10/32 ,  Y02T10/36

摘要： A dual fuel system for an internal combustion engine includes a gaseous fuel subsystem and a liquid fuel subsystem. A plurality of fuel injectors each define a gaseous fuel passage fluidly connected to a gaseous fuel manifold of the gaseous fuel subsystem, a liquid fuel passage fluidly connected to a liquid fuel manifold of the liquid fuel subsystem, and a liquid fuel leak path from the liquid fuel passage to the gaseous fuel passage. A liquid fuel purging mechanism includes a drain conduit and at least one valve positioned fluidly between the drain conduit and the gaseous fuel manifold, and being adjustable to fluidly connect the drain conduit to the gaseous fuel manifold, to drain leaked liquid fuel to a low pressure outlet.

摘要翻译： 用于内燃机的双燃料系统包括气体燃料子系统和液体燃料子系统。 多个燃料喷射器各限定一个气体燃料通道，其流体地连接到气体燃料子系统的气体燃料歧管，流体连接到液体燃料子系统的液体燃料歧管的液体燃料通道，以及来自液体的液体燃料泄漏路径 燃料通向气体燃料通道。 液体燃料清除机构包括排水管道和至少一个阀，其位于排水管道和气体燃料歧管之间流体流动，并且可调节以将排水管道流体连接到气体燃料歧管，以将泄漏的液体燃料排出到低压 出口。

公开(公告)号：US20150361943A1

公开(公告)日：2015-12-17

申请号：US14734587

申请日：2015-06-09

申请人： Caterpillar Motoren GmbH & Co. KG

发明人： Eike Joachim SIXEL ,  Hauke HOLST

IPC分类号： F02P5/153 ,  F02D35/02

CPC分类号： F02P5/153 ,  F02D19/024 ,  F02D19/0647 ,  F02D19/105 ,  F02D35/023 ,  F02D35/028 ,  F02D41/0027 ,  F02M21/0278 ,  G01L23/221 ,  Y02T10/32 ,  Y02T10/36 ,  Y02T10/46

摘要： A method for controlling an engine is disclosed. The method may include receiving a pressure data set of a combustion event. The pressure data set may correspond to a temporal development of a cylinder pressure during the combustion event in a cylinder. The method may also include determining using a controller that the received pressure data set indicates an actual ignition timing within a preset ignition timing window. Further, the method may include deriving an actual combustion duration (D1) of the combustion event from the received pressure data set. The method may also include determining whether the actual combustion duration (D1) is shorter than a preset combustion duration for the cylinder. In addition, the method may include providing a control signal to control an operation of the internal combustion engine when the actual combustion duration is shorter than the preset combustion duration.

摘要翻译： 公开了一种用于控制发动机的方法。 该方法可以包括接收燃烧事件的压力数据集。 压力数据集可以对应于气缸内的燃烧事件期间气缸压力的时间变化。 该方法还可以包括使用控制器确定所接收的压力数据集指示在预设点火正时窗口内的实际点火正时。 此外，该方法可以包括从接收的压力数据集导出燃烧事件的实际燃烧持续时间（D1）。 该方法还可以包括确定实际燃烧持续时间（D1）是否短于气缸的预设燃烧持续时间。 此外，该方法可以包括当实际燃烧持续时间短于预设燃烧持续时间时提供控制信号来控制内燃机的操作。

公开(公告)号：US09169758B2

公开(公告)日：2015-10-27

申请号：US14111428

申请日：2011-04-13

申请人： Yusuke Nakayama ,  Toru Kidokoro ,  Kenji Sakurai

发明人： Yusuke Nakayama ,  Toru Kidokoro ,  Kenji Sakurai

IPC分类号： F01N3/18 ,  F02D19/10 ,  F01N13/00 ,  F01N3/08 ,  F01N3/10

CPC分类号： F01N3/18 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/101 ,  F01N13/009 ,  F02D19/105 ,  Y02T10/22 ,  Y02T10/36

摘要： The present invention has its object to provide a technique which can eliminate HC poisoning of an exhaust gas purification catalyst in a suitable manner in a fuel injection control system of an internal combustion engine which can use a liquid fuel and a gas fuel. In order to achieve this object, the present invention is constructed such that in the fuel injection control system of an internal combustion engine capable of using a liquid fuel and a gas fuel, when HC poisoning of the exhaust gas purification catalyst has occurred, HC poisoning is intended to be eliminated by causing the internal combustion engine to operate by the use of the gas fuel if the temperature of the exhaust gas purification catalyst is less than a specified value, whereas the elimination of HC poisoning is intended by causing the internal combustion engine to operate by the use of the liquid fuel if the temperature of an exhaust gas purification device is not less than the specified value.

摘要翻译： 本发明的目的是提供一种能够以能够使用液体燃料和气体燃料的内燃机的燃料喷射控制系统中适当的方式消除排气净化催化剂的HC中毒的技术。 为了实现该目的，本发明构成为在能够使用液体燃料和气体燃料的内燃机的燃料喷射控制系统中，在已经发生排气净化催化剂的HC中毒的情况下，HC中毒 如果排气净化催化剂的温度小于规定值，则通过使用燃气燃料来使内燃机运转，而排除HC中毒的目的是通过使内燃机 如果废气净化装置的温度不小于规定值，则通过使用液体燃料进行操作。

公开(公告)号：US20150252741A1

公开(公告)日：2015-09-10

申请号：US14639982

申请日：2015-03-05

申请人： Caterpillar Motoren GmbH & Co. KG

发明人： Eike Joachim SIXEL ,  Daniel WESTER ,  Adam STUBBS ,  Michael SNOPKO

IPC分类号： F02D35/02 ,  F02D19/06

CPC分类号： F02D35/023 ,  F02D19/0621 ,  F02D19/0623 ,  F02D19/0628 ,  F02D19/0642 ,  F02D19/0647 ,  F02D19/105 ,  F02D41/0025 ,  F02D41/0027 ,  F02D41/221 ,  F02D2041/224 ,  Y02T10/36

摘要： A method of evaluating operability of a gaseous fuel admission valve of an internal combustion engine is disclosed. The internal combustion engine includes a plurality of cylinders and at least one gaseous fuel admission valve for each cylinder of the plurality of cylinders. The method includes operating the dual fuel internal combustion engine on liquid fuel. The method further includes supplying gaseous fuel to the gaseous fuel admission valves at a pressure above an intake manifold air pressure thereby setting a differential gas pressure across the gaseous fuel admission valves. The method also includes operating the gaseous fuel admission valves to add gaseous fuel to intake air while operating the dual fuel internal combustion engine primarily on liquid fuel. Further, the method includes measuring combustion process parameters for the cylinders. The method also includes evaluating operability of the gaseous fuel admission valves based on the measured combustion process parameters.

摘要翻译： 公开了一种评估内燃机的气体燃料入口阀的可操作性的方法。 所述内燃机包括多个气缸和用于所述多个气缸中的每个气缸的至少一个气体燃料入口阀。 该方法包括在液体燃料上操作双燃料内燃机。 该方法还包括在高于进气歧管空气压力的压力下将气体燃料供应到气体燃料入口阀，从而在气体燃料入口阀上设定差压气体压力。 该方法还包括操作气体燃料入口阀以将气体燃料添加到进气中，同时主要以液体燃料操作双燃料内燃机。 此外，该方法包括测量气缸的燃烧过程参数。 该方法还包括基于所测量的燃烧过程参数评估气体燃料进入阀的可操作性。