公开(公告)号：US20200248618A1

公开(公告)日：2020-08-06

申请号：US16267499

申请日：2019-02-05

Applicant: GM Global Technology Operations LLC

Inventor： Colby T. Stanley ,  Xiangkun Kong ,  David S. Mathews ,  Nicholas J. Kalweit

IPC: F02B75/18 ,  F02D31/00 ,  F02D13/02 ,  F02D41/00

Abstract: An engine control system of a vehicle includes a cylinder control module configured to: determine a target sequence for at least activating and deactivating cylinders of an engine based on a torque request; and activate and deactivate the cylinders of the engine according to the target sequence. A values module is configured to determine, based on the target sequence, a plurality of coefficients and an offset value. An indicated mean effective pressure (IMEP) determination module is configured to determine an IMEP of a first cylinder based on: the plurality of coefficients; the offset value; and a plurality of engine speeds at a predetermined crankshaft positions, respectively.