公开(公告)号：US20160305383A1

公开(公告)日：2016-10-20

申请号：US15195075

申请日：2016-06-28

Applicant: Caterpillar Inc.

Inventor： Daniel R. Puckett ,  Bryan Moore ,  Michael E. Sattler ,  Prasanna M. Ballal ,  Bradley S. Bashore ,  Kranti K. Nellutla

IPC: F02M47/02 ,  F02D41/30 ,  F02M51/06 ,  F02M63/00 ,  F02D41/38 ,  F02D41/20

CPC classification number: F02M47/027 ,  F02D41/20 ,  F02D41/3082 ,  F02D41/3836 ,  F02D2041/2044 ,  F02D2041/2051 ,  F02D2041/2055 ,  F02D2041/2058 ,  F02M51/0625 ,  F02M63/0022 ,  F02M63/0075

Abstract: Fuel is injected by energizing a solenoid of a fuel injector for an on-time that terminates at a first end-of-current timing. An end-of-current trim is determined at least in part by estimating a duration between an induced current event in a circuit of the solenoid and a valve/armature interaction event. An induced current event occurs when an armature abruptly stops, and a valve/armature interaction event occurs when the armature couples with or de-couples from the valve member. Fuel is injected in a subsequent injection event by adjusting the end-of-current timing by the end-of-current trim.

公开(公告)号：US11415070B2

公开(公告)日：2022-08-16

申请号：US17102490

申请日：2020-11-24

Applicant: Caterpillar Inc.

Inventor： Daniel R. Puckett ,  Michael E. Sattler ,  Dustin K. Fee ,  Gregory L. Armstrong

IPC: F02D41/22 ,  F02M51/00 ,  G01R19/165 ,  F02D41/30

Abstract: A method for identifying a fuel injector characteristic may include generating a signal to supply electrical current to the fuel injector, and monitoring the electrical current supplied to the fuel injector. The method may also include identifying the characteristic of the fuel injector based on the electrical current, the characteristic including a type of fuel injector, and performing a corrective action based on the type of fuel injector which was identified based on the electrical current.

公开(公告)号：US12247526B2

公开(公告)日：2025-03-11

申请号：US18333453

申请日：2023-06-12

Applicant: Caterpillar Inc.

Inventor： Michael E. Sattler ,  Daniel R. Puckett ,  Bradley S. Bashore

IPC: F02D41/38 ,  F02M55/02 ,  F02M59/44 ,  F02M59/46

Abstract: According to one aspect of the present disclosure, a method of controlling a common rail fuel system of an engine system is provided. The common rail fuel system includes a fuel pump, a fuel rail, a plurality of fuel injectors, and a pressure-responsive relief valve fluidly coupled to the fuel rail. The method comprises identifying a pressure condition of the fuel rail indicative of the pressure-responsive relief valve being in an open and latched condition, the identification being based on detecting a rise and reduction in rail pressure within a threshold time period. The method further comprises terminating flow from the fuel pump, while the common rail fuel system is operating, to unlatch and close the pressure-responsive relief valve.

公开(公告)号：US09856840B2

公开(公告)日：2018-01-02

申请号：US15195075

申请日：2016-06-28

Applicant: Caterpillar Inc.

Inventor： Daniel R. Puckett ,  Bryan Moore ,  Michael E. Sattler ,  Prasanna M. Ballal ,  Bradley S. Bashore ,  Kranti K. Nellutla

IPC: F02B15/00 ,  F02M47/02 ,  F02D41/38 ,  F02M51/06 ,  F02D41/20 ,  F02M63/00 ,  F02D41/30

CPC classification number: F02M47/027 ,  F02D41/20 ,  F02D41/3082 ,  F02D41/3836 ,  F02D2041/2044 ,  F02D2041/2051 ,  F02D2041/2055 ,  F02D2041/2058 ,  F02M51/0625 ,  F02M63/0022 ,  F02M63/0075

Abstract: Fuel is injected by energizing a solenoid of a fuel injector for an on-time that terminates at a first end-of-current timing. An end-of-current trim is determined at least in part by estimating a duration between an induced current event in a circuit of the solenoid and a valve/armature interaction event. An induced current event occurs when an armature abruptly stops, and a valve/armature interaction event occurs when the armature couples with or de-couples from the valve member. Fuel is injected in a subsequent injection event by adjusting the end-of-current timing by the end-of-current trim.

公开(公告)号：US20220163006A1

公开(公告)日：2022-05-26

申请号：US17102490

申请日：2020-11-24

Applicant: Caterpillar Inc.

Inventor： Daniel R. Puckett ,  Michael E. Sattler ,  Dustin K. Fee ,  Gregory L. Armstrong

IPC: F02D41/22 ,  F02M51/00 ,  F02D41/30 ,  G01R19/165

Abstract: A method for identifying a fuel injector characteristic may include generating a signal to supply electrical current to the fuel injector, and monitoring the electrical current supplied to the fuel injector. The method may also include identifying the characteristic of the fuel injector based on the electrical current, the characteristic including a type of fuel injector, and performing a corrective action based on the type of fuel injector which was identified based on the electrical current.

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.