公开(公告)号：US20170107923A1

公开(公告)日：2017-04-20

申请号：US15298899

申请日：2016-10-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Massimiliano MELIS ,  Francesco Concetto PESCE ,  Joaquin DE LA MORENA

IPC: F02D41/00 ,  F02D41/26 ,  F02M26/41 ,  F02B37/12 ,  F02M26/17

CPC classification number: F02D41/0072 ,  F02B37/12 ,  F02D41/0007 ,  F02D41/0052 ,  F02D41/18 ,  F02D41/26 ,  F02D2200/04 ,  F02M26/17 ,  F02M26/41 ,  F02M26/47 ,  F02M26/50 ,  Y02T10/144 ,  Y02T10/47

Abstract: A method is disclosed for operating an internal combustion engine having a turbocharger and an exhaust gas recirculation pipe fluidly connecting an exhaust system to an air intake system upstream of a compressor of the turbocharger. A first value of a parameter indicative of the density of a mixture of fresh air and exhaust gas in the air intake system is determined. A flowing of exhaust gas through the exhaust gas recirculation pipe is interrupted if the first value is lower than a first reference value thereof.

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：US20160333799A1

公开(公告)日：2016-11-17

申请号：US15154251

申请日：2016-05-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Massimiliano MELIS ,  Francesco Concetto PESCE ,  Stefano NIEDDU ,  Andrea MOLLAR

IPC: F02D1/10 ,  F04B19/22 ,  F02M59/10 ,  F04B49/22 ,  F04B49/06 ,  F02D41/30 ,  F04B17/05

CPC classification number: F02D1/10 ,  F02D41/042 ,  F02D41/3005 ,  F02D41/3845 ,  F02D2041/224 ,  F02D2200/101 ,  F02M59/102 ,  F04B9/042 ,  F04B17/05 ,  F04B19/22 ,  F04B49/03 ,  F04B49/065 ,  F04B49/22 ,  F04B53/14

Abstract: A method for automatically operating a cam-driven pump is disclosed. The pump is monitored to determine whether a specified detachment condition or potential detachment of an actuator of the pump from a driving cam is occurring. The pump is operated in a minimal pressure holding mode to provide a minimal pressure within a working chamber of the pump so as to bias the actuator towards the cam if it is determined that the detachment condition is occurring.

Abstract translation: 公开了一种用于自动操作凸轮驱动泵的方法。 监测泵以确定是否发生指定的脱离状态或泵的致动器从驱动凸轮的潜在脱离。 泵以最小压力保持模式操作，以在泵的工作室内提供最小压力，以便如果确定发生脱离状况，则将致动器偏压到凸轮。