公开(公告)号：US20240351573A1

公开(公告)日：2024-10-24

申请号：US18304746

申请日：2023-04-21

Applicant: Caterpillar Inc.

Inventor： Robert M. McDavid ,  Jonathan W. Anders ,  Bobby John ,  Timothy A. Bazyn ,  Youngjin Son ,  Aaron W. Costall ,  Radoslav B. Ivanov

IPC: B60W20/15 ,  F02B39/10 ,  F02D41/00 ,  F02D41/14

CPC classification number: B60W20/15 ,  F02B39/10 ,  F02D41/0027 ,  F02D41/1454

Abstract: Operating a hybrid power system for a machine includes combusting a direct injected gaseous hydrogen fuel in an engine operating an electrical generator, and increasing a load demand of the hybrid power system. Operating the hybrid power system further includes operating an electrical-assist compressor to supply an increased airflow into the engine based on an increased engine power demand to satisfy the increased load demand. Air-fuel equivalence ratio of the engine (so-called “lambda”) is maintained at a ratio of about 2 or greater to limit NOx emissions, and between a hydrogen fuel misfire limit and a hydrogen fuel preignition limit. Related apparatus and control logic is also disclosed.

公开(公告)号：US20220397070A1

公开(公告)日：2022-12-15

申请号：US17345370

申请日：2021-06-11

Applicant: Caterpillar Inc.

Inventor： Kevin WEISS ,  Adam Zuk ,  Ryan C. Eveler ,  Timothy A. Bazyn ,  Sylvain J. Charbonnel

IPC: F02D41/00 ,  F02D41/14 ,  F02B37/24

Abstract: In one aspect, a method for controlling an internal combustion engine system including an exhaust gas recirculation (EGR) valve and a variable-geometry turbocharger (VGT) having a compressor and a turbine includes receiving a plurality of requests for the internal combustion engine system. The method also includes predicting a plurality of expected states of the internal combustion engine system based on the plurality of requests and generating sets of candidate control points for actuating the EGR valve and the VGT based on the plurality of expected states. The method further includes selecting a set of candidate control points that avoids a surge condition of the compressor and based on the selected set of candidate control points, generating commands for actuating the EGR valve and the VGT.

公开(公告)号：US11614041B2

公开(公告)日：2023-03-28

申请号：US17345370

申请日：2021-06-11

Applicant: Caterpillar Inc.

Inventor： Kevin Weiss ,  Adam Zuk ,  Ryan C. Eveler ,  Timothy A. Bazyn ,  Sylvain J. Charbonnel

IPC: F02D41/00 ,  F02D41/14 ,  F02B37/24 ,  F02B37/12

Abstract: In one aspect, a method for controlling an internal combustion engine system including an exhaust gas recirculation (EGR) valve and a variable-geometry turbocharger (VGT) having a compressor and a turbine includes receiving a plurality of requests for the internal combustion engine system. The method also includes predicting a plurality of expected states of the internal combustion engine system based on the plurality of requests and generating sets of candidate control points for actuating the EGR valve and the VGT based on the plurality of expected states. The method further includes selecting a set of candidate control points that avoids a surge condition of the compressor and based on the selected set of candidate control points, generating commands for actuating the EGR valve and the VGT.