公开(公告)号：US20140238350A1

公开(公告)日：2014-08-28

申请号：US13775735

申请日：2013-02-25

Applicant: CATERPILLAR INC.

Inventor： Scott Fiveland ,  David Montgomery ,  Alan Stockner

IPC: F02M69/04

CPC classification number: F02M69/04 ,  F02B25/04 ,  F02B43/02 ,  F02D19/10 ,  F02M21/0251 ,  F02M21/0269 ,  F02M21/0281 ,  F02M57/025 ,  Y02T10/32 ,  Y02T10/36

Abstract: Apparatus and methods for injecting gaseous fuel into a compression ignition engine are disclosed. A gaseous fuel injector includes a pintle valve and an intensifier. The pintle valve includes a pintle body defining a pintle bore therethrough, a first sealing surface disposed on a distal end of the pintle body, and a pintle disposed within the pintle bore. The pintle includes a shaft, a radially flared portion, and a second sealing surface disposed on a proximal face of the radially flared portion, such that the first sealing surface faces the second sealing surface. The intensifier includes an intensifier body defining a fuel pump chamber therein, the fuel pump chamber being fluidly coupled to a gaseous fuel supply and the pintle bore, a plunger having a distal end disposed in the fuel pump chamber, and an intensifier piston disposed on a proximal end of the plunger.

Abstract translation: 公开了将气体燃料注入压燃式发动机的装置和方法。 气体燃料喷射器包括枢轴阀和增压器。 枢栓阀包括枢轴，该枢轴体限定穿过其中的枢轴孔，设置在枢轴体的远端上的第一密封表面和设置在枢轴孔内的枢栓。 枢轴包括轴，径向扩张部分和设置在径向扩张部分的近侧面上的第二密封表面，使得第一密封表面面向第二密封表面。 增压器包括在其中限定燃料泵室的增压器主体，燃料泵室流体地联接到气体燃料供应器和枢轴孔，具有设置在燃料泵室中的远端的柱塞和设置在燃料泵室上的增压器活塞 柱塞的近端。

公开(公告)号：US11566545B2

公开(公告)日：2023-01-31

申请号：US16401765

申请日：2019-05-02

Applicant: Caterpillar Inc.

Inventor： David Yu Zhang Chang ,  David Todd Montgomery ,  Scott Fiveland ,  Scott F. Shafer

IPC: F01L1/24 ,  F01L1/04 ,  F02D41/14

Abstract: A gas engine is disclosed. The gas engine may include a combustion cylinder. The combustion cylinder may include an intake with an intake valve. The combustion cylinder may include an exhaust with an exhaust valve. The gas engine may include a gas admission valve assembly coupled to the intake. The gas admission assembly may include a trimmable electro-hydraulically actuatable gas admission valve to control a gas flow into the intake.

公开(公告)号：US09133808B2

公开(公告)日：2015-09-15

申请号：US13775735

申请日：2013-02-25

Applicant: Caterpillar Inc.

Inventor： Scott Fiveland ,  David Montgomery ,  Alan Stockner

IPC: F02M69/04

CPC classification number: F02M69/04 ,  F02B25/04 ,  F02B43/02 ,  F02D19/10 ,  F02M21/0251 ,  F02M21/0269 ,  F02M21/0281 ,  F02M57/025 ,  Y02T10/32 ,  Y02T10/36

Abstract: Apparatus and methods for injecting gaseous fuel into a compression ignition engine are disclosed. A gaseous fuel injector includes a pintle valve and an intensifier. The pintle valve includes a pintle body defining a pintle bore therethrough, a first sealing surface disposed on a distal end of the pintle body, and a pintle disposed within the pintle bore. The pintle includes a shaft, a radially flared portion, and a second sealing surface disposed on a proximal face of the radially flared portion, such that the first sealing surface faces the second sealing surface. The intensifier includes an intensifier body defining a fuel pump chamber therein, the fuel pump chamber being fluidly coupled to a gaseous fuel supply and the pintle bore, a plunger having a distal end disposed in the fuel pump chamber, and an intensifier piston disposed on a proximal end of the plunger.

Abstract translation: 公开了将气体燃料注入压燃式发动机的装置和方法。 气体燃料喷射器包括枢轴阀和增压器。 枢栓阀包括枢轴，该枢轴体限定穿过其中的枢轴孔，设置在枢轴体的远端上的第一密封表面和设置在枢轴孔内的枢栓。 枢轴包括轴，径向扩张部分和设置在径向扩张部分的近侧面上的第二密封表面，使得第一密封表面面向第二密封表面。 增压器包括在其中限定燃料泵室的增压器主体，燃料泵室流体地联接到气体燃料供应器和枢轴孔，具有设置在燃料泵室中的远端的柱塞和设置在燃料泵室上的增压器活塞 柱塞的近端。

公开(公告)号：US11035317B2

公开(公告)日：2021-06-15

申请号：US16433839

申请日：2019-06-06

Applicant: Caterpillar Inc.

Inventor： Scott Fiveland ,  Arvind Sivasubramanian ,  Shivangi Wagle ,  Shawn Damm ,  Christopher Gallmeyer ,  Andy Pierpont

IPC: F02D41/40 ,  F02D41/00 ,  F02D41/14 ,  F02D19/10 ,  F02D19/06

Abstract: A control system for controlling pilot fuel injection in a dual fuel engine is disclosed. The control system may determine, using measurements from one or more sensors, one or more combustion parameters associated with the dual fuel engine during operation of the dual fuel engine. The control system may determine an estimated nitrogen oxides (NOx) emissions level based on the one or more combustion parameters, and may determine a NOx error based on a comparison between the estimated NOx emissions level and a desired NOx emissions level. The control system may control a quantity of pilot fuel injected into the dual fuel engine based on the NOx error.