公开(公告)号：US20170335834A1

公开(公告)日：2017-11-23

申请号：US15162024

申请日：2016-05-23

Applicant: Caterpillar Inc.

Inventor： Sunil Bean ,  Daniel Puckett ,  Andrew Neaville

IPC: F04B17/03 ,  F02M59/10

CPC classification number: F04B17/03 ,  F02D19/0647 ,  F02D19/0663 ,  F02M21/0218 ,  F02M21/0221 ,  F02M21/0275 ,  F02M21/0281 ,  F02M21/0287 ,  F02M43/02 ,  F02M53/02 ,  F02M59/105 ,  F02M2200/245 ,  F04B1/124 ,  F04B1/128 ,  F04B9/107 ,  F04B9/1176 ,  F04B49/06 ,  F04B2201/0201 ,  Y02T10/32 ,  Y02T10/36

Abstract: A fluid system such as a fuel system includes a fluid supply and a pump coupled between the fluid supply and a plurality of fluid delivery devices. The pump can be a cryogenic pump such as for liquefied natural gas, with valve mechanisms to control hydraulic actuation of a piston used to pump the liquefied natural gas. An electrically conductive coil is coupled with the piston. Related methodology is disclosed.

公开(公告)号：US08909457B2

公开(公告)日：2014-12-09

申请号：US13732619

申请日：2013-01-02

Applicant: Caterpillar Inc.

Inventor： Daniel Puckett ,  Steven Thomas Grant ,  Frank Lombardi

IPC: F02D19/10 ,  F02D19/06

CPC classification number: F02D19/0615 ,  F02D19/061 ,  F02D19/0623 ,  F02D19/0684 ,  F02D19/0694 ,  F02D19/105 ,  F02M21/0281 ,  F02M63/0063 ,  F02M63/029 ,  Y02T10/32 ,  Y02T10/36

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. When transitioning from the single fuel limp home mode to the dual fuel regular mode, accumulated leaked liquid fuel in the gaseous nozzle chamber of each fuel injector is purged and burned in the respective engine cylinder.

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。 当从单一燃料跛行家庭模式转换到双重燃料正常模式时，每个燃料喷射器的气体喷嘴室中累积的泄漏的液体燃料在相应的发动机气缸中被清除和燃烧。

公开(公告)号：US20140311451A1

公开(公告)日：2014-10-23

申请号：US13868339

申请日：2013-04-23

Applicant: CATERPILLAR INC.

Inventor： Dianqi Fang ,  Daniel Puckett

IPC: F02M21/02

CPC classification number: 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

Abstract: 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.

Abstract translation: 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。