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.

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：US20170226973A1

公开(公告)日：2017-08-10

申请号：US15500903

申请日：2014-07-31

Applicant: Cummins Inc.

Inventor： Norman C. Blizard ,  Timothy P. Lutz ,  David B. Snyder

IPC: F02M43/04 ,  F02D19/10 ,  F02D41/00 ,  F02D19/06

Abstract: A method of reducing carbonaceous deposits on a fuel injector is provided in which a first fuel composition is supplied to the fuel injector in a dual fuel engine, the first fuel composition comprising natural gas fuel and a first percentage of diesel fuel; and a second fuel composition is supplied to the fuel injector in a dual fuel engine, the second fuel composition comprising a second percentage of diesel fuel that is greater than the first percentage of diesel fuel to cause cavitation to occur within the fuel injector, thereby reducing carbonaceous deposits.

公开(公告)号：US10465643B2

公开(公告)日：2019-11-05

申请号：US15500903

申请日：2014-07-31

Applicant: Cummins Inc.

Inventor： Norman C. Blizard ,  Timothy P. Lutz ,  David B. Snyder

IPC: F02M43/04 ,  F02D19/06 ,  F02D19/08 ,  F02M43/00 ,  F02D19/10 ,  F02D41/00

Abstract: A method of reducing carbonaceous deposits on a fuel injector is provided in which a first fuel composition is supplied to the fuel injector in a dual fuel engine, the first fuel composition comprising natural gas fuel and a first percentage of diesel fuel; and a second fuel composition is supplied to the fuel injector in a dual fuel engine, the second fuel composition comprising a second percentage of diesel fuel that is greater than the first percentage of diesel fuel to cause cavitation to occur within the fuel injector, thereby reducing carbonaceous deposits.