公开(公告)号：US10801433B2

公开(公告)日：2020-10-13

申请号：US15960893

申请日：2018-04-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Nicholas Girardi ,  Neil Anderson

IPC: F02D41/22 ,  F02D41/08 ,  G07C5/08

Abstract: Methods for determining an irregular fuel request (IFR) for vehicle engines coupled to driveshafts via clutched transmissions are provided and include: determining an idle condition of the engine, generating one or more fuel requests during the idle condition, and determining an IFR based on a clutch control parameter and a fuel request generated during the idle condition. The idle condition of the engine is determined based on a vehicle speed and an engine speed if the vehicle speed and engine speed are below respective thresholds. An IFR is determined if a fuel request falls outside a range, and/or if the clutch control parameter is such that the clutch does not substantially impart load to the engine. The idle fuel request range is determined based on a combustion mode of the engine and/or a gear state of the transmission. The method further includes implementing a control action after determining an IFR.

公开(公告)号：US20200217266A1

公开(公告)日：2020-07-09

申请号：US16242675

申请日：2019-01-08

Applicant: GM Global Technology Operations LLC

Inventor： Eric M. Sisco ,  Douglas A. Kopp ,  Neil Anderson

IPC: F02D41/40 ,  F02M65/00 ,  F02D41/38

Abstract: A method of operating a fuel injector includes determining an actual energizing time correction value for a fuel injector at a first fuel rail pressure, calculating an extrapolated energizing time correction value by performing a mathematical calculation on the actual energizing time correction value, and controlling the operation of the fuel injector based on the actual energizing time correction value and the extrapolated energizing time correction value.

公开(公告)号：US20190323446A1

公开(公告)日：2019-10-24

申请号：US15960893

申请日：2018-04-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Nicholas Girardi ,  Neil Anderson

IPC: F02D41/22 ,  F02D41/08 ,  G07C5/08

Abstract: Methods for determining an irregular fuel request (IFR) for vehicle engines coupled to driveshafts via clutched transmissions are provided and include: determining an idle condition of the engine, generating one or more fuel requests during the idle condition, and determining an IFR based on a clutch control parameter and a fuel request generated during the idle condition. The idle condition of the engine is determined based on a vehicle speed and an engine speed if the vehicle speed and engine speed are below respective thresholds. An IFR is determined if a fuel request falls outside a range, and/or if the clutch control parameter is such that the clutch does not substantially impart load to the engine. The idle fuel request range is determined based on a combustion mode of the engine and/or a gear state of the transmission. The method further includes implementing a control action after determining an IFR.