-
公开(公告)号：US20180363539A1
公开(公告)日：2018-12-20
申请号：US15622364
申请日：2017-06-14
CPC分类号： F02B19/16 , F02B19/108 , F02B19/12
摘要： Methods and systems are provided for purging a pre-chamber. In one example, a system is provided with a combustion chamber formed by a cylinder head coupled to a cylinder block and a pre-chamber in fluidic communication with the combustion chamber. The system is also provided with a purge port coupled to the pre-chamber and structured to flow purge air into the pre-chamber, where the flow of the purge air is driven by operation a purge pump and a piston disposed within the combustion chamber.
-
公开(公告)号：US20180038270A1
公开(公告)日：2018-02-08
申请号：US15784095
申请日：2017-10-14
CPC分类号： F02B19/1095 , F02B1/04 , F02B17/005 , F02B19/1009 , F02B19/1014 , F02B19/108 , F02B19/12 , F02B19/16 , F02B23/04 , F02B23/0672 , F02B23/0675 , H01T13/54 , Y02T10/125
摘要： In certain embodiments, a two-stage precombustion chamber may be used to reduce engine NOx levels, with fueled precombustion chambers, while maintaining comparable engine power output and thermal efficiency. One or more fuel admission points may be located in either the first prechamber stage or the second prechamber stage. A more efficient overall combustion characterized by low levels of NOx formation may be achieved by a two-stage precombustion chamber system while generating very high energy flame jets emerging from the second prechamber stage into the main combustion chamber. A first prechamber stage may be substantially smaller than a second prechamber stage. The volumes and aspect ratios of the two prechamber stages, along with the location of the electrodes within the first stage prechamber, the hole patterns, angles and the separate fueling, may be selected to create a distribution of fuel concentration that is substantially higher in the first stage prechamber compared to the second prechamber stage.
-
公开(公告)号：US09874158B2
公开(公告)日：2018-01-23
申请号：US14815469
申请日：2015-07-31
发明人： Mark Vincent Scotto
IPC分类号： F02D19/06 , H01M8/04223 , H01M8/04701 , H01M8/04746 , H01M8/04791 , F02D19/08 , F02M31/20 , F02M27/02 , F02B19/16 , H01M8/0637 , H01M8/0444 , F02B47/06 , F02M25/12 , H01M8/124
CPC分类号： F02D19/0644 , F02B19/16 , F02B47/06 , F02D19/0671 , F02D19/081 , F02D2200/0606 , F02M25/12 , F02M27/02 , F02M31/20 , H01M8/04231 , H01M8/04268 , H01M8/04455 , H01M8/04708 , H01M8/04738 , H01M8/04753 , H01M8/04776 , H01M8/04798 , H01M8/0637 , H01M2008/1293 , Y02E60/566 , Y02T10/121 , Y02T10/125 , Y02T10/126 , Y02T10/36
摘要： One embodiment of the present invention is a unique method for operating an engine. Another embodiment is a unique engine system. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for engines and engine systems. Further embodiments, forms, features, aspects, benefits, and advantages of the present application will become apparent from the description and figures provided herewith.
-
公开(公告)号：US09476347B2
公开(公告)日：2016-10-25
申请号：US13347448
申请日：2012-01-10
CPC分类号： F02B19/12 , F02B19/16 , F02P9/007 , F02P13/00 , F02P15/001 , F02P21/02 , F02P23/04 , H01T13/32 , H01T13/54 , Y02T10/125
摘要： A pre-chamber spark plug that includes a shell. Additionally, the pre-chamber spark plug includes an insulator disposed within the shell. In a particular embodiment, a center electrode has a first portion surrounded by the insulator, and a second portion that extends from the insulator into a pre-chamber. The pre-chamber defined by the shell. In a further embodiment, a ground electrode is attached to the insulator. In particular embodiments, the ground electrode is tubular in shape and includes an inner spark surface ring spaced in surrounding relation to the center electrode to create a spark gap, an outer ring attached to the shell, and a plurality of rounded spokes connecting the inner and outer rings. In a particular embodiment, the ground and center electrodes accommodate attachment of precious metal alloys to increase electrode surface life. In another embodiment the ground electrode and insulator is coaxial to the center electrode.
摘要翻译： 包括壳体的预燃烧器火花塞。 此外，预燃烧器火花塞包括设置在壳体内的绝缘体。 在特定实施例中，中心电极具有由绝缘体包围的第一部分和从绝缘体延伸到预充电室的第二部分。 由壳体定义的预制室。 在另一实施例中，接地电极附接到绝缘体。 在特定实施例中，接地电极是管状形状并且包括内部火花表面环，该内部火花表面环围绕中心电极间隔开以产生火花间隙，附接到壳体的外环以及连接内部和 外圈。 在特定实施例中，接地和中心电极适应贵金属合金的附着以增加电极的表面寿命。 在另一个实施例中，接地电极和绝缘体与中心电极同轴。
-
公开(公告)号：US20160252007A1
公开(公告)日：2016-09-01
申请号：US15149455
申请日：2016-05-09
申请人： Caterpillar Inc.
发明人： Xinyu Ge , Xinqiang Xu , Liang Wang
IPC分类号： F02B19/16
CPC分类号： F02B19/16 , F02B19/108 , F02B19/12 , F02B43/00 , F02M21/02 , Y02T10/125 , Y02T10/32
摘要： A pre-chamber assembly for an engine having a cylinder head defining a coolant passage is provided. The pre-chamber assembly includes a body member defining pre-combustion chamber received within the cylinder head, and a plurality of fins projecting radially from an outer surface of the body member. The plurality of fins includes a first set of fins proximate to the pre-combustion chamber, a second set of fins spaced apart from the first set of fins along a longitudinal axis, and a third set of fins disposed between the first set of fins and the second set of fins. A number of fins of the first set of fins is greater than a number of fins of the third set of fins, and the number of fins of the third set of fins is greater than a number of fins of the second set of fins.
摘要翻译： 提供了一种用于具有限定冷却剂通道的气缸盖的用于发动机的预室组件。 预组件组件包括限定在气缸盖内容纳的预燃室的主体构件和从主体构件的外表面径向突出的多个翅片。 所述多个翅片包括靠近所述预燃烧室的第一组翅片，沿着纵向轴线与所述第一组翅片间隔开的第二组翅片，以及设置在所述第一组鳍片之间的第三组翅片，以及 第二组鳍。 第一组叶片的多个翅片大于第三组叶片的翅片数，并且第三组翼片的翅片数量大于第二组翼片的翅片数。
-
46.发明申请Fuel Combustion System Having Component with Thermal Conductor Member and Method of Making Same 审中-公开具有热导体部件的燃料燃烧系统及其制造方法公开(公告)号：US20160237879A1
公开(公告)日：2016-08-18
申请号：US14623216
申请日：2015-02-16
申请人： Caterpillar Inc.
发明人： Matthew I. Rowan
CPC分类号： F02B19/1009 , B33Y10/00 , B33Y80/00 , F01P3/02 , F01P2003/024 , F02B19/1014 , F02B19/16 , F02M31/145 , Y02T10/125 , Y02T10/126
摘要： A component of a fuel combustion system of an engine includes a body and a thermal conductor member. The body includes a fuel surface configured to be in heat-transferring relationship with a fuel source within the fuel combustion system. The body is made from a first material having a first thermal conductivity value. The thermal conductor member is disposed within the body and is made from a second material, which is different from the first material and has a second thermal conductivity value that is higher than the first thermal conductivity value. The thermal conductor member includes a first end disposed adjacent the fuel surface and a second end in distal relationship thereto. The thermal conductor member extends between the first and second ends along a thermal conduction path defined within the body and extending away from the fuel surface.
摘要翻译： 发动机的燃料燃烧系统的部件包括主体和热导体部件。 本体包括被配置为与燃料燃烧系统内的燃料源处于热传递关系的燃料表面。 主体由具有第一热导率值的第一材料制成。 热导体构件设置在主体内并且由与第一材料不同的第二材料制成，并且具有高于第一热导率值的第二热导率值。 热导体构件包括邻近燃料表面设置的第一端和与其远离关系的第二端。 热导体构件沿第一和第二端之间沿着限定在主体内并延伸远离燃料表面的热传导路径延伸。
-
公开(公告)号：US20160061096A1
公开(公告)日：2016-03-03
申请号：US14934175
申请日：2015-11-06
申请人： Caterpillar Inc.
发明人： Andrew J. Loetz
CPC分类号： F02B19/18 , F01N2510/06 , F02B19/1028 , F02B19/12 , F02B19/16 , F02B75/10 , F02B77/02 , Y02T10/125
摘要： A combustion cylinder for an engine is disclosed. The combustion cylinder includes a main combustion chamber and a pre-combustion chamber. The pre-combustion chamber is fluidly connected to the main combustion chamber through a plurality of passages. The pre-combustion chamber includes an inner peripheral portion. The inner peripheral portion and the plurality of passages are coated with a layer of a NOx reducing catalyst.
摘要翻译： 公开了一种用于发动机的燃烧缸。 燃烧筒包括主燃烧室和预燃烧室。 预燃室通过多个通道流体地连接到主燃烧室。 预燃烧室包括内周部分。 内周部分和多个通道涂覆有一层NOx还原催化剂。
-
公开(公告)号：US20160053673A1
公开(公告)日：2016-02-25
申请号：US14929397
申请日：2015-11-01
CPC分类号： F02B19/18 , F02B19/1014 , F02B19/1023 , F02B19/12 , F02B19/16 , F02P13/00 , Y02T10/125
摘要： In certain embodiments with large size prechambers and/or with prechambers that have large spark-gap electrode assemblies, a poor scavenge of the crevice volume may cause deterioration of the preignition margin, which then may limit the power rating of the engine, may cause the flow velocity field of the fuel-air mixture to be excessively uneven and may result in the deterioration of the misfire limit. One or more auxiliary scavenging ports may allow admission of fuel rich mixture to the crevice volume, thereby cooling the residual gases and preventing occurrence of preignition. More organized and powerful flow velocity fields may be obtained in the spark-gap electrode assembly region. This condition may result in a significant extension of the flammability limit and may significantly improve the combustion efficiency of the prechamber. Passive prechambers using the active scavenge concept may increase the engine power output and reduce the emission of pollutants from engine combustion.
-
公开(公告)号：US09003765B1
公开(公告)日：2015-04-14
申请号：US13182489
申请日：2011-07-14
申请人： Barry A. Muth
发明人： Barry A. Muth
CPC分类号： F02B19/1019 , F02B19/02 , F02B19/16 , Y02T10/125
摘要： A poppet valve engine incorporates a single rotary combustion chamber serving multiple cylinders to decrease emissions and increase thermodynamic efficiency. Virtually zero emissions are achievable by on-board fuel reforming to hydrogen. Limited heat range exposure of the rotary combustion chamber, low temperature combustion, and ceramic coatings reduce heat loss while three stage combustion, intake and fuel preheating, and fuel reforming reduce combustion process irreversibility. A supercharger increases the power density to allow engine displacement reduction. A z-crankshaft assembly coupled with a pre-combustion chamber allow knock-less and stable hydrogen combustion at virtually all load and speed conditions. Variable compression, possible in certain configurations of the z-crankshaft assembly, further increases thermal efficiency.
摘要翻译： 提升阀发动机包括一个用于多个气缸的旋转燃烧室，以减少排放并提高热力学效率。 通过车载燃料重整为氢气可实现零排放。 旋转燃烧室，低温燃烧和陶瓷涂层的有限的热范围暴露减少了热损失，而三级燃烧，进气和燃料预热以及燃料重整降低了燃烧过程的不可逆性。 增压器增加功率密度，以减少发动机排量。 与预燃室连接的z型曲轴组件实际上在所有负载和速度条件下都能实现无爆震和稳定的氢气燃烧。 可变压缩，可能在z曲轴组件的某些配置中，进一步提高了热效率。
-
公开(公告)号：US20140261299A1
公开(公告)日：2014-09-18
申请号：US14212878
申请日：2014-03-14
申请人： Kurt AMPLATZ
发明人： Kurt AMPLATZ
IPC分类号： F02B19/16
CPC分类号： F02B19/16 , Y02T10/125
摘要： An internal combustion engine is described that includes an expansion cylinder adjacent to a first combustion cylinder (or power cylinder). Combustion gases from the first cylinder are directed to the expansion cylinder to act on the piston in the expansion cylinder. The expansion cylinder has a larger bore (i.e. larger diameter piston) and/or a longer stroke than the first cylinder. The longer stroke also results in a much larger crankshaft arm resulting in a significantly improved mechanical advantage (i.e. torque). In addition, the expansion cylinder includes a check valve that is designed to automatically open the expansion chamber to atmosphere if a negative pressure develops due to the varying amount of exhaust gases at different speeds. In one embodiment, two power cylinders can be connected to one expansion cylinder.
摘要翻译： 描述了一种内燃机，其包括与第一燃烧气缸（或动力气缸）相邻的膨胀气缸。 来自第一气缸的燃烧气体被引导到膨胀气缸以作用在膨胀气缸中的活塞上。 膨胀缸具有比第一气缸更大的孔（即更大直径的活塞）和/或更长的冲程。 较长的行程也会导致更大的曲轴臂导致显着改善的机械优点（即扭矩）。 此外，膨胀气缸包括止回阀，该止回阀被设计成如果由于不同速度的废气的变化量而产生负压，则自动将膨胀室打开到大气中。 在一个实施例中，两个动力缸可以连接到一个膨胀缸。
-
-
-
-
-
-
-
-
-
搜索结果
113 条记录 (耗时 0.023 秒)
