公开(公告)号：US10591379B2

公开(公告)日：2020-03-17

申请号：US16477445

申请日：2017-12-27

Applicant: Cummins Inc.

Inventor： David Michael Carey ,  Shounak Mishra ,  Zachary L. Anslinger ,  Sarah E. Gnau ,  Srinivas K. Mulukutla ,  Edward Nathan Linen

IPC: F02D41/30 ,  G01M3/26 ,  F02D41/38 ,  F02D41/22 ,  F02D1/08

Abstract: A method for identifying a source of high pressure leakage of a fuel system of an engine comprising determining pressure decay values at a first pressure and at a second pressure and identifying the source of high pressure leakage based on the pressure decay values at each pressure.

公开(公告)号：US10302038B2

公开(公告)日：2019-05-28

申请号：US15292849

申请日：2016-10-13

Applicant: CUMMINS INC.

Inventor： Shounak Mishra ,  Norman C. Blizard ,  Edward Nathan Linen ,  Joseph Andrew Worthington

IPC: F02D41/30 ,  F02M37/08 ,  F02M37/18 ,  F02D41/38 ,  F02D41/22

Abstract: Systems and related methods for regulating fuel rail pressure for internal combustion engines utilizing an electronic fuel transfer pump (eFTP) on the low side to provide robust control of fuel pressure on the high side. The eFTP is in fluid communication with a low-pressure fuel circuit for providing a low-pressure fuel flow at a low pressure to a high-pressure pump. Upon failure of a fuel control valve, a pressure-responsive valve, and/or a pressure sensor impacting the high-side fuel pressure, the eFTP modulates the low-side fuel flow and/or low-side fuel pressure to mitigate damage to the engine. A controller in operative communication with the eFTP and/or one or more sensors is configured to provide a pump command to the eFTP in response to a failure condition impacting the high-side fuel pressure.

公开(公告)号：US11015540B2

公开(公告)日：2021-05-25

申请号：US16339634

申请日：2017-10-03

Applicant: CUMMINS INC.

Inventor： Chandan Mahato ,  John L. Hoehne ,  E. Nathan Linen ,  Shounak Mishra ,  Boopathi S. Mahadevan ,  Foy C. Henderson

IPC: F02D41/02 ,  B01D53/94 ,  F01N3/20 ,  F01L1/047 ,  F02B9/04 ,  F02D13/02 ,  F02D41/00 ,  F02D41/30 ,  F02D41/40 ,  F01L9/20

Abstract: An apparatus comprises a first circuit and a second circuit. The first circuit is structured to determine that a combustion cylinder is operating in a transition period between an exhaust stroke and an intake stroke of the combustion cylinder. The second circuit is structured to provide an injection command during the transition period to a fuel injector associated with the combustion cylinder, the injection command being to inject fuel into a combustion chamber of the combustion cylinder such that at least a portion of the fuel escapes from the combustion chamber through an exhaust port of the combustion cylinder.

公开(公告)号：US20190360888A1

公开(公告)日：2019-11-28

申请号：US16477445

申请日：2017-12-27

Applicant: Cummins Inc.

Inventor： David Michael Carey ,  Shounak Mishra ,  Zachary L. Anslinger ,  Sarah E. Gnau ,  Srinivas K. Mulukutla ,  Edward Nathan Linen

IPC: G01M3/26 ,  F02D41/38

Abstract: A method for identifying a source of high pressure leakage of a fuel system of an engine comprising determining pressure decay values at a first pressure and at a second pressure and identifying the source of high pressure leakage based on the pressure decay values at each pressure.

公开(公告)号：US20170101959A1

公开(公告)日：2017-04-13

申请号：US15292849

申请日：2016-10-13

Applicant: CUMMINS INC.

Inventor： Shounak Mishra ,  Norman C. Blizard ,  Edward Nathan Linen ,  Joseph Andrew Worthington

IPC: F02D41/30 ,  F02D41/22 ,  F02M65/00 ,  F02M37/08 ,  F02M37/18

CPC classification number: F02D41/3082 ,  F02D41/221 ,  F02D41/3854 ,  F02D2041/223 ,  F02M37/08 ,  F02M37/18

Abstract: Systems and related methods for regulating fuel rail pressure for internal combustion engines utilizing an electronic fuel transfer pump (eFTP) on the low side to provide robust control of fuel pressure on the high side. The eFTP is in fluid communication with a low-pressure fuel circuit for providing a low-pressure fuel flow at a low pressure to a high-pressure pump. Upon failure of a fuel control valve, a pressure-responsive valve, and/or a pressure sensor impacting the high-side fuel pressure, the eFTP modulates the low-side fuel flow and/or low-side fuel pressure to mitigate damage to the engine. A controller in operative communication with the eFTP and/or one or more sensors is configured to provide a pump command to the eFTP in response to a failure condition impacting the high-side fuel pressure.