公开(公告)号：US20160252028A1

公开(公告)日：2016-09-01

申请号：US15056333

申请日：2016-02-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Andrea DUTTO ,  Giorgio NATI ,  Andrea DE FILIPPO ,  Cristian TAIBI ,  Adele DE DOMENICO

IPC: F02D41/02 ,  F02D41/14 ,  F02D41/30

CPC classification number: F02D41/025 ,  F01N3/08 ,  F01N9/00 ,  F01N2900/1602 ,  F02D41/0007 ,  F02D41/027 ,  F02D41/0275 ,  F02D41/029 ,  F02D41/14 ,  F02D41/1446 ,  F02D41/3005 ,  F02D41/402 ,  F02D41/405 ,  F02D2041/1409 ,  F02D2041/1422 ,  Y02T10/144 ,  Y02T10/44 ,  Y02T10/47

Abstract: An internal combustion engine includes an aftertreatment device, an injector for injecting fuel into a cylinder and an Electronic Control Unit configured to perform a regeneration process of the aftertreatment device. The regeneration process includes determining a nominal fuel quantity to be injected by an after-injection; monitoring a temperature value of the aftertreatment device; determining a fuel quantity correction value, as a function of a difference between the monitored temperature value and a target temperature value of the aftertreatment device; correcting the nominal fuel quantity value, using the fuel quantity correction value, in order to determine a corrected fuel quantity value; performing a fuel injection cycle including a plurality of after-injections; and injecting the corrected fuel quantity value into the cylinder during one of the after-injections of the cycle.

Abstract translation: 内燃机包括后处理装置，用于将燃料喷射到气缸中的喷射器和被配置为执行后处理装置的再生处理的电子控制单元。 再生过程包括确定通过后喷射注入的标称燃料量; 监测后处理装置的温度值; 确定燃料量校正值，作为所述监测温度值与所述后处理装置的目标温度值之间的差的函数; 使用燃料量校正值来校正标称燃料量值，以便确定校正燃料量值; 执行包括多次后喷射的燃料喷射循环; 以及在所述循环的所述后喷射之一期间将校正后的燃料量值注入所述气缸。

公开(公告)号：US20190101076A1

公开(公告)日：2019-04-04

申请号：US15721245

申请日：2017-09-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Giorgio NATI ,  Paolo OLMO ,  Nicola Pio SACCO ,  Davide GESSAROLI

IPC: F02D41/28 ,  F02D41/02 ,  F02D41/14 ,  F02D9/10

Abstract: A method and apparatus is provided for regenerating an after-treatment device associated with an exhaust system of an internal combustion engine. A lambda error control provides a lambda error signal based upon a measured lambda value and a predetermined lambda value indicative of rich operation. An after-injection map provides an after-injection preset based upon a speed and a torque of the internal combustion engine. A main injection map provides a torque-making main injection preset based upon the speed of the internal combustion engine and the torque of the internal combustion engine. A controller is configured to provide an after-injection quantity signal based upon the after-injection preset, the lambda error signal and a main injection quantity signal based upon the main injection preset and the lambda error signal such that the measured lambda value is maintained within a regeneration range.

公开(公告)号：US20160177859A1

公开(公告)日：2016-06-23

申请号：US14967468

申请日：2015-12-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Luca GATTI ,  Chiara POZZI ,  Giorgio NATI ,  Davide Francesco MERCURI ,  Luca CHIAPUSSO

IPC: F02D41/30 ,  F02D41/02

CPC classification number: F02D41/0255 ,  F02D41/0055 ,  F02D41/025 ,  F02D41/402 ,  F02D41/405 ,  Y02T10/26 ,  Y02T10/44 ,  Y02T10/47

Abstract: A method of operating an internal combustion engine is described, which includes executing a warm up strategy of an engine aftertreatment system, wherein the warm up strategy includes injecting fuel into the engine according to a multi-injection pattern having at least one after injection.

Abstract translation: 描述了一种操作内燃机的方法，其包括执行发动机后处理系统的预热策略，其中预热策略包括根据具有至少一次喷射后的多喷射模式将燃料喷射到发动机中。

公开(公告)号：US20170152808A1

公开(公告)日：2017-06-01

申请号：US15361814

申请日：2016-11-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Isadora RICCI ,  Giorgio NATI ,  Cosma NEGRO ,  Stefano PELLEGRINO

IPC: F02D41/40 ,  F02D41/38

CPC classification number: F02D41/405 ,  F02D41/027 ,  F02D41/029 ,  F02D41/3827 ,  F02D41/401 ,  F02D41/402 ,  F02D41/403 ,  F02D2041/389 ,  F02D2250/11 ,  Y02T10/44

Abstract: A method of operating a fuel injector of an internal combustion engine having a reciprocating piston includes performing a multi after-injection pattern having at least one pair of consecutive injection pulses both starting after a top dead center of the piston and separated by a dwell time shorter than 200 as.

公开(公告)号：US20160230685A1

公开(公告)日：2016-08-11

申请号：US15041731

申请日：2016-02-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Davide Francesco MERCURI ,  Paolo OLMO ,  Davide GESSAROLI ,  Giorgio NATI

IPC: F02D41/02 ,  F02B37/16 ,  F02D41/00 ,  F01N3/08

CPC classification number: F02D41/0275 ,  F01N3/0885 ,  F02B29/04 ,  F02B37/168 ,  F02B37/18 ,  F02D41/0007 ,  F02D2009/0225 ,  F02D2009/0228 ,  F02M26/05 ,  F02M26/25 ,  Y02T10/144 ,  Y02T10/146

Abstract: A method and apparatus for regenerating a Lean NOx Trap in an internal combustion engine is disclosed. The internal combustion engine includes a Lean NOx Trap, a turbocharger having a turbine. An electronic control unit is configured to execute a regeneration event of the Lean NOx Trap, and regulate a position of an actuator affecting a rotating speed of the turbine using a closed-loop control strategy of an air pressure into an intake duct downstream of a compressor of the turbocharger and upstream of a throttle valve during the execution of the regeneration event.

Abstract translation: 公开了一种用于再生内燃机中的精益NOx捕集阱的方法和装置。 内燃机包括精益NOx捕集阱，具有涡轮的涡轮增压器。 电子控制单元被配置为执行精益NOx捕集器的再生事件，并且使用空气压力的闭环控制策略来调节影响涡轮机的转速的致动器的位置到压缩机下游的进气管道 的涡轮增压器，并且在执行再生事件期间在节流阀的上游。