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：US11598302B2

公开(公告)日：2023-03-07

申请号：US17102524

申请日：2020-11-24

Applicant: Caterpillar Inc.

Inventor： Daniel R. Puckett ,  Bradley S. Bashore

IPC: G01M15/09 ,  F02M65/00

Abstract: A pump health assessment system and a method for providing a pump health of a pump is disclosed. The method includes: determining that there is an imbalance in the pump; increasing pump flow from the pump; measuring a rail pressure of a fuel rail; determining if the rail pressure is substantially equal to an expected rail pressure profile; and in accordance with a determination that the rail pressure is not substantially equal to the rail pressure profile, outputting an indication of pump damage.

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：US20220163010A1

公开(公告)日：2022-05-26

申请号：US17102524

申请日：2020-11-24

Applicant: Caterpillar Inc.

Inventor： Daniel R. Puckett ,  Bradley S. Bashore

IPC: F02M65/00 ,  G01M15/09

Abstract: A pump health assessment system and a method for providing a pump health of a pump is disclosed. The method includes: determining that there is an imbalance in the pump; increasing pump flow from the pump; measuring a rail pressure of a fuel rail; determining if the rail pressure is substantially equal to an expected rail pressure profile; and in accordance with a determination that the rail pressure is not substantially equal to the rail pressure profile, outputting an indication of pump damage.

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.