公开(公告)号：US10961941B1

公开(公告)日：2021-03-30

申请号：US16807951

申请日：2020-03-03

Applicant: GM Global Technology Operations LLC

Inventor： Wesley R. Haney ,  Layne K. Wiggins ,  Shawn W. Murphy

IPC: F02D41/00 ,  F02D41/02 ,  F02D41/26 ,  F02B29/04

Abstract: A physics-based charge temperature model to calculate a charge air temperature for an automobile vehicle includes multiple variables. The multiple variables include: a first variable defining an engine speed of an engine defining revolutions per minute of a crankshaft of the engine; a second variable defining a cam position; a third variable defining an engine coolant temperature; a fourth variable defining an air intake temperature; a fifth variable defining an engine air flow; and a sixth variable defining a firing fraction of the engine. A controller provides multiple lookup tables. The controller controls operation of the engine using the multiple variables and data in the multiple lookup tables to calculate a charge air temperature for individual intake strokes of at least one cylinder of the engine.

公开(公告)号：US20180313356A1

公开(公告)日：2018-11-01

申请号：US15582949

申请日：2017-05-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Shawn W. Murphy ,  Andrew J. Kosanka ,  Jay S. Meldrum ,  Layne K. Wiggins ,  Adam J. Heinzen

IPC: F04D27/00 ,  G01M15/08

CPC classification number: F04D27/001 ,  F04D17/10 ,  F04D25/024 ,  G01M15/08

Abstract: A method for compressor surge detection to enable model based air estimation includes determining if an intake air compressor pressure ratio is within a predetermined surge pressure range. Then the differences between mass air flow sensor signals measured at a start and finish of each count of a predetermined string length counter when the compressor pressure ratio is within the predetermined surge pressure range. Next, a transition is made to an air mass estimation model output signal from a mass air flow sensor signal when a sum of the air flow differences is greater than a predetermined compressor surge threshold.