公开(公告)号：US20220180673A1

公开(公告)日：2022-06-09

申请号：US17247383

申请日：2020-12-09

Applicant: Cummins Inc.

Inventor： Jeffrey Diwakar Abraham ,  Marcela Schmalz de Bernardi ,  Avra Brahma ,  Timothy J. Greis ,  Michael Haas ,  Gregory H. Henderson ,  Adam W. Kidd ,  Lyle E. Kocher ,  Krithika Mohan ,  Daniel J. Smith ,  Christophe Tricaud ,  Ananth Vemuri ,  Easwar Yarrabikki

IPC: G07C5/08 ,  G07C5/00 ,  F02M26/02 ,  F02B37/24 ,  B60R16/023 ,  F02M35/10

Abstract: A system includes a controller configured to store a relationship matrix of a plurality of diagnostic estimators and a plurality of failure modes, each failure mode represents a type of failure that can occur with (i) a sensor or (ii) a vehicle component of a vehicle system, each diagnostic estimator is associated with a respective subset of the failure modes, each respective subset defines a control volume within the vehicle system that contains at least one of (i) one or more sensors or (ii) one or more vehicle components; store a healthy diagnostic vector regarding nominal operational parameters of the vehicle system; acquire diagnostic information regarding current operational parameters of the vehicle system to generate an error diagnostic vector; divide the error diagnostic vector by the healthy diagnostic vector to generate a ratio diagnostic vector; multiply the ratio diagnostic vector with the relationship matrix to generate a value for each failure mode.

公开(公告)号：US20190264581A1

公开(公告)日：2019-08-29

申请号：US16409193

申请日：2019-05-10

Applicant: Cummins Inc.

Inventor： Christophe Tricaud ,  James A. Zigan

IPC: F01K23/06 ,  F01K27/02 ,  F01K13/02

Abstract: An apparatus includes a pump circuit structured to receive pump data indicative of an operating characteristic of a pump feeding a fluid to a waste heat recovery (WHR) system; a flow circuit structured to receive valve position data indicative of a position of a valve downstream of the pump, estimate a flow rate of the fluid exiting the pump, and estimate the flow rate of the fluid exiting the valve; and a pressure circuit structured to receive pressure data indicative of the pressure of the fluid exiting the valve, estimate a change in pressure of the fluid across the WHR system, and determine a pressure of the fluid in a hot section of the WHR system based on the pressure of the fluid exiting the valve and the change in the pressure of the fluid across the WHR system.