公开(公告)号：WO2019125616A1

公开(公告)日：2019-06-27

申请号：PCT/US2018/059324

申请日：2018-11-06

Applicant: CUMMINS INC.

Inventor： HALBE, Mayura H. ,  THOMAS, Robert J. ,  HSIEH, Ming-Feng

IPC: F02M26/05 ,  F02D21/06 ,  F02D21/08 ,  F02D41/00 ,  F02M26/02 ,  F02M26/06

Abstract: Systems, methods and apparatus are disclosed for producing a target compressor outlet pressure that is based on a desired pressure differential across an intake throttle of an internal combustion engine and an intake manifold pressure by opening or closing a compressor recirculation valve and a turbocharger wastegate to commanded positions based on the target compressor outlet pressure.

公开(公告)号：WO2020009825A1

公开(公告)日：2020-01-09

申请号：PCT/US2019/038682

申请日：2019-06-24

Applicant: CUMMINS INC.

Inventor： HALBE, Mayura H. ,  HSIEH, Ming-Feng

IPC: F02B37/12 ,  F02B37/16 ,  F02D23/00 ,  F02D41/00 ,  F02D41/10 ,  F02D41/18

Abstract: Systems, methods and apparatus are disclosed for providing or maintaining a target surge margin at the compressor during steady state engine operating conditions and to avoid compressor surge during transients by controlling a compressor recirculation valve position to a commanded position. The estimated surge margin can be determined in response to the measured pressure ratio across the compressor, an estimated compressor flow, and a compressor map for the compressor.