公开(公告)号：US11136935B2

公开(公告)日：2021-10-05

申请号：US17046887

申请日：2018-04-10

Applicant: Cummins Inc.

Inventor： Tommy J. Albing ,  David Michael Carey

IPC: F02D41/24 ,  F02D1/16 ,  F02D41/00 ,  F02D41/22 ,  F02M55/02 ,  F02M59/02

Abstract: A method of adaptively predicting, during operation of a pump, a mass of fuel pumped by the pump during a pumping event to a fuel accumulator (“Qpump”) to control operation of the pump is provided, comprising: generating an adaptive model of operation of the pump, including estimating a start of pumping (“SOP”) position of a plunger of the pump, estimating Qpump, determining a converged value of the estimated SOP position, and determining a converged value of the estimated Qpump; using the adaptive model to predict Qpump by inputting to the model the converged value of the estimated SOP position, a measured pressure of fuel in the fuel accumulator and a measured temperature of fuel in the fuel accumulator; and controlling operation of the pump in response to the predicted Qpump.

公开(公告)号：US20210156328A1

公开(公告)日：2021-05-27

申请号：US17046887

申请日：2018-04-10

Applicant: Cummins Inc.

Inventor： Tommy J. Albing ,  David Michael Carey

IPC: F02D41/24 ,  F02D41/00 ,  F02D1/16 ,  F02D41/22 ,  F02M55/02 ,  F02M59/02

Abstract: A method of adaptively predicting, during operation of a pump, a mass of fuel pumped by the pump during a pumping event to a fuel accumulator (“Qpump”) to control operation of the pump is provided, comprising: generating an adaptive model of operation of the pump, including estimating a start of pumping (“SOP”) position of a plunger of the pump, estimating Qpump, determining a converged value of the estimated SOP position, and determining a converged value of the estimated Qpump; using the adaptive model to predict Qpump by inputting to the model the converged value of the estimated SOP position, a measured pressure of fuel in the fuel accumulator and a measured temperature of fuel in the fuel accumulator; and controlling operation of the pump in response to the predicted Qpump.

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.