公开(公告)号：US09027534B2

公开(公告)日：2015-05-12

申请号：US13661461

申请日：2012-10-26

Applicant: Caterpillar Inc.

Inventor： Hoisan Kim ,  Alan Stockner ,  Mark F. Sommars

IPC: F02M21/02 ,  F02B13/00 ,  F02D19/06 ,  F02D41/00

CPC classification number: F02D41/0025 ,  F02D19/0605 ,  F02D19/0623 ,  F02D19/0647 ,  F02D19/0694 ,  F02D41/0027 ,  F02M21/0221 ,  F02M21/0239 ,  F02M21/0278 ,  Y02T10/32 ,  Y02T10/36

Abstract: A compression ignition dual fuel engine supplies natural gas fuel and liquid diesel fuel to each engine cylinder from a common fuel injector. Each fuel injector is fluidly connected to both a liquid fuel common rail and a gaseous fuel common rail. The engine includes a surplus gas system for capturing surplus gas, such as evaporated gas from the gaseous fuel supply and pressure control system, or left over pressurized natural gas produced by engine shut down. Rather than being vented to atmosphere, the surplus gas can be burned in the engine when operating conditions present burn opportunities.

Abstract translation: 压缩点火双燃料发动机从共同的燃料喷射器向每个发动机气缸供应天然气燃料和液体柴油燃料。 每个燃料喷射器流体地连接到液体燃料共轨和气体燃料共轨两者。 发动机包括用于捕获多余气体的剩余气体系统，例如来自气体燃料供应和压力控制系统的蒸发气体，或者由发动机关闭产生的加压天然气。 而不是被排放到大气中，当操作条件存在燃烧机会时，剩余气体可以在发动机中燃烧。

公开(公告)号：US20150047614A1

公开(公告)日：2015-02-19

申请号：US13987653

申请日：2013-08-19

Applicant: Caterpillar, Inc.

Inventor： Hoisan Kim ,  Cory Andrew Brown ,  Glenn B. Cox

IPC: F02M43/04

CPC classification number: F02M43/04 ,  F02D19/0647 ,  F02D19/0694 ,  F02D19/081 ,  F02M21/0281 ,  Y02T10/32 ,  Y02T10/36

Abstract: A dual fuel system includes liquid and gaseous fuel supplies and a fuel injector in fluid communication therewith. A gaseous fuel check in the fuel injector forms a leak path with a fuel injector body between gaseous and liquid fuel passages, and a leakage limiting seal is positioned about the gaseous fuel check and deformable into sealing contact with the gaseous fuel check responsive to an increase in a pressure drop from the liquid fuel passage to the gaseous fuel passage in the fuel injector.

公开(公告)号：US20140116375A1

公开(公告)日：2014-05-01

申请号：US13661461

申请日：2012-10-26

Applicant: CATERPILLAR INC.

Inventor： Hoisan Kim ,  Alan Stockner ,  Mark F. Sommars

IPC: F02M21/02 ,  F02M33/00 ,  F02M55/00 ,  F02M69/46

CPC classification number: F02D41/0025 ,  F02D19/0605 ,  F02D19/0623 ,  F02D19/0647 ,  F02D19/0694 ,  F02D41/0027 ,  F02M21/0221 ,  F02M21/0239 ,  F02M21/0278 ,  Y02T10/32 ,  Y02T10/36

Abstract: A compression ignition dual fuel engine supplies natural gas fuel and liquid diesel fuel to each engine cylinder from a common fuel injector. Each fuel injector is fluidly connected to both a liquid fuel common rail and a gaseous fuel common rail. The engine includes a surplus gas system for capturing surplus gas, such as evaporated gas from the gaseous fuel supply and pressure control system, or left over pressurized natural gas produced by engine shut down. Rather than being vented to atmosphere, the surplus gas can be burned in the engine when operating conditions present burn opportunities.

Abstract translation: 压缩点火双燃料发动机从共同的燃料喷射器向每个发动机气缸供应天然气燃料和液体柴油燃料。 每个燃料喷射器流体地连接到液体燃料共轨和气体燃料共轨两者。 发动机包括用于捕获多余气体的剩余气体系统，例如来自气体燃料供应和压力控制系统的蒸发气体，或者由发动机关闭产生的加压天然气。 而不是被排放到大气中，当操作条件存在燃烧机会时，剩余气体可以在发动机中燃烧。