公开(公告)号：US20210047974A1

公开(公告)日：2021-02-18

申请号：US16539060

申请日：2019-08-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Umberto FERRARA ,  Filippo LACHINA ,  Gianmaria MANASSERO ,  Domenico MACCARRONE ,  Claudio CORTASSA ,  Marco CIBELLA

IPC: F02D41/00 ,  F02D41/02 ,  F02D41/14 ,  F02B37/18

Abstract: A system includes a temperature sensor configured to measure a temperature of exhaust gas produced by an engine, and a boost error module configured to determine a boost error of the engine. The system further includes a combustion control module configured to select at least one of a target boost pressure of the engine, a target EGR flow rate of the engine, and a target fuel injection parameter of the engine from a first set of target values when the exhaust gas temperature is less than a predetermined temperature and the boost error is less than a predetermined value, and to select the at least one of the target boost pressure, the target EGR flow rate, and the target fuel injection parameter from a second set of target values when the exhaust gas temperature is less than the predetermined temperature and the boost error is greater than the predetermined value.

公开(公告)号：US20180334983A1

公开(公告)日：2018-11-22

申请号：US15597741

申请日：2017-05-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Gennaro MERLINO ,  Angelo CANCELLIERI ,  Umberto FERRARA ,  Francesco Concetto PESCE ,  Alessandro FORINA

IPC: F02D41/38 ,  F02D41/40 ,  F02D41/04

CPC classification number: F02D41/3827 ,  F02D41/04 ,  F02D41/403 ,  F02D41/405 ,  F02D2041/389 ,  F02D2200/06

Abstract: Methods and systems are provided for controlling fuel injections by a fuel injector in a cylinder of an internal combustion engine. First and second fuel injections are applied in each cycle of a piston in the cylinder. First and second electronic control signals are applied to the fuel injector to generate first and second fuel injections by the fuel injector during a first cycle of the piston. A hydraulic fusion state of the generated first and second fuel injections is determined. A parameter of the applied first and second electronic control signals is adjusted in response to determining the hydraulic fusion state and applied to the fuel injector to generate first and second fuel injections by the fuel injector during a second cycle of the piston subsequent to the first cycle.

公开(公告)号：US20190211772A1

公开(公告)日：2019-07-11

申请号：US15865706

申请日：2018-01-09

Applicant: GM Global Technology Operations LLC

Inventor： Paolo CASASSO ,  Tiziana BELVEDERE ,  Umberto FERRARA ,  Luca CHIAPUSSO

IPC: F02D41/40 ,  F02D41/38

Abstract: An injector driver module includes: a first node that is connected to a first terminal of a fuel injector; a first switch configured to, when closed, connect a first potential of a battery to the first node; a second switch configured to, when closed, connect a second potential that is greater than the first potential to the first node; a second node that is connected to a second terminal of the fuel injector; and a third switch configured to, when closed, connect a ground potential to the second node. A switch control module is configured to, starting at a target injecting timing for a fuel injection event of the fuel injector: maintain the third switch closed; and switch the second switch using a pulse width modulated (PWM) signal having (i) a duty cycle that is less than 100 percent and (ii) a predetermined frequency.