公开(公告)号：US11293370B1

公开(公告)日：2022-04-05

申请号：US16953841

申请日：2020-11-20

Applicant: Caterpillar Inc.

Inventor： Daniel R. Puckett ,  Andrew O. Marrack ,  Michael E. Sattler ,  Mitchell B. Juchems

IPC: F02D41/30 ,  F02D41/22 ,  F02D41/20

Abstract: A method for controlling a fuel injector of an engine system includes applying a pull-in current to close a spill valve of the fuel injector and detecting a timing at which the spill valve closes. The method also includes adjusting at least one of an amplitude of the pull-in current, a duration of the pull-in current, or a timing of a start of an application of the pull-in current based on the detected timing of the closing of the spill valve.

公开(公告)号：US11230990B2

公开(公告)日：2022-01-25

申请号：US16680247

申请日：2019-11-11

Applicant: Caterpillar Inc.

Inventor： Daniel R. Puckett ,  Kranti K. Nellutla ,  Gregory L. Armstrong

IPC: F02D41/38 ,  F02D41/20 ,  F02D41/14 ,  F02M63/00 ,  F02M45/00

Abstract: A fuel injection method includes applying a first method current to close a spill valve according to a first method, applying a control valve current to open a control valve, and discontinuing the application of the control valve current to thereby cause the control valve to close. The method also includes applying a second method current to maintain the spill valve closed according to a second method and detecting a timing of a closing of the control valve while applying the second method current according to the second method, the second method being different than the first method.

公开(公告)号：US10941738B1

公开(公告)日：2021-03-09

申请号：US16741386

申请日：2020-01-13

Applicant: Caterpillar Inc.

Inventor： Daniel R. Puckett ,  Andrew O. Marrack

IPC: F02M47/02 ,  F02M59/36 ,  F02M59/46 ,  F02M57/02 ,  F02D41/20

Abstract: A method of injecting fuel with a fuel injector includes applying a spill valve current to close a spill valve and applying a control valve current to move a control valve to an injection position. The method also includes discontinuing the application of the spill valve current to open the spill valve and preventing a return of the control valve to a non-injection position while detecting a timing when the spill valve opens.

公开(公告)号：US20180106249A1

公开(公告)日：2018-04-19

申请号：US15296215

申请日：2016-10-18

Applicant: Caterpillar Inc.

Inventor： Martin A. Lehman ,  Scott F. Shafer ,  Daniel R. Puckett

IPC: F04B49/20 ,  F02M37/22 ,  F02M37/04 ,  F04B23/02 ,  F04B49/22 ,  F04B49/06 ,  F02M37/00

CPC classification number: F04B49/20 ,  F02M37/0052 ,  F02M37/04 ,  F02M37/22 ,  F04B23/02 ,  F04B23/04 ,  F04B49/065 ,  F04B49/22

Abstract: A control system for a fuel supply module of an engine is provided. The control system includes a first fuel flow sensor in a fuel supply line which detects a first amount of fuel flowing through the fuel supply line and generates a first signal indicative of the first amount of fuel. The control system includes a second fuel flow sensor in the fuel return line which detects a second amount of fuel flowing through the fuel return line and generates a second signal indicative of the second amount of fuel. A controller receives the first signal and the second signal. The controller calculates a difference between the first signal and the second signal. The controller commands operation of the fuel supply module to supply a fuel flow to the engine independent of the engine speed, based on the difference between the first signal and the second signal.

公开(公告)号：US20160341136A1

公开(公告)日：2016-11-24

申请号：US14716603

申请日：2015-05-19

Applicant: Caterpillar Inc.

Inventor： Urvish Joshi ,  Travis Barnes ,  Eric W. Cler ,  Anand KrishnamurthyGopalan ,  Eric A. Hutchison ,  Kirti Tamhane ,  Andrew N. Schifferer ,  Tyler Bowman ,  Kevin Sergott ,  Matthew Mowers ,  Daniel R. Puckett

IPC: F02D41/00 ,  F02D41/26

CPC classification number: F02D41/0007 ,  F02B2037/125 ,  F02D31/001 ,  F02D41/0225 ,  F02D41/18 ,  Y02T10/144

Abstract: A method for operating an internal combustion engine includes monitoring engine parameters using an electronic controller, determining a surge speed limit for the engine based on a compressor map, determining an offset engine speed based on a margin between the surge speed limit and an engine speed, determining a minimum engine speed based on the margin, applying the offset engine speed to an engine speed signal to provide an adjusted engine speed, and applying the adjusted engine speed to a desired engine speed when a speed of the engine approaches the surge speed limit.

Abstract translation: 用于操作内燃机的方法包括使用电子控制器监测发动机参数，基于压缩机映射确定发动机的喘振速度限制，基于浪涌转速极限和发动机转速之间的余量来确定偏移发动机转速， 基于所述余量确定最小发动机速度，将所述偏移引擎速度应用于发动机速度信号以提供调整的发动机速度，以及当所述发动机的速度接近所述喘振速度极限时将调整后的发动机转速应用到期望的发动机转速。