公开(公告)号：US09512793B2

公开(公告)日：2016-12-06

申请号：US13652549

申请日：2012-10-16

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Joel G. Toner ,  Kushal Narayanaswamy ,  Gerald A. Szekely, Jr. ,  Paul M. Najt

IPC: F01N3/20 ,  F02D41/00 ,  F01N3/10 ,  F02D41/02

CPC classification number: F02D41/008 ,  F01N3/101 ,  F01N3/2066 ,  F01N3/208 ,  F01N2240/25 ,  F01N2610/02 ,  F02D41/0235 ,  Y02T10/22 ,  Y02T10/24

Abstract: A method for controlling ammonia generation in an exhaust gas feedstream output from an internal combustion engine equipped with an exhaust aftertreatment system including a first aftertreatment device includes executing an ammonia generation cycle to generate ammonia on the first aftertreatment device. A desired air-fuel ratio output from the engine and entering the exhaust aftertreatment system conducive for generating ammonia on the first aftertreatment device is determined. Operation of a selected combination of a plurality of cylinders of the engine is selectively altered to achieve the desired air-fuel ratio entering the exhaust aftertreatment system.

Abstract translation: 一种用于控制从配备有包括第一后​​处理装置的排气后处理系统的内燃机输出的废气原料流中的氨生成方法，包括在第一后处理装置上执行氨生成循环以产生氨。 确定从发动机输出并进入排气后处理系统的有利于在第一后处理装置上产生氨的期望的空燃比。 选择性地改变发动机的多个气缸的选定组合的操作，以实现进入排气后处理系统的期望空燃比。

公开(公告)号：US09995260B2

公开(公告)日：2018-06-12

申请号：US14845339

申请日：2015-09-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mahmoud H. Abd Elhamid ,  Anne M. Dailly ,  Mei Cai ,  Herman K. Phlegm ,  Ronald O. Grover, Jr. ,  Kushal Narayanaswamy

IPC: F01B29/04 ,  F02M37/00 ,  F02B11/02 ,  F02B43/00

CPC classification number: F02M37/0088 ,  F02B11/02 ,  F02B43/00 ,  Y02T10/32

Abstract: A bi-fuel vehicle has an Internal Combustion Engine (ICE) to provide motive power to the vehicle by combustion of a liquid fuel and gas-phase fuel. The vehicle has a dual fuel tank including a liquid fuel tank to receive liquid fuel, contain the liquid fuel, and supply the liquid fuel for combustion in the ICE. The vehicle has a pressurizable gas-phase fuel tank defined by a wall. A gas-phase fuel is permeable through the wall. The pressurizable gas-phase fuel tank is to receive the gas-phase fuel, contain the gas-phase fuel, and supply the gas-phase fuel for combustion in the ICE. A shell envelops the pressurizable gas-phase fuel tank and defines an interior space of the liquid fuel tank. The wall is in fluid communication with the interior space. The interior space is to receive the permeated gas-phase fuel.

公开(公告)号：US08931257B2

公开(公告)日：2015-01-13

申请号：US13846967

申请日：2013-03-19

Applicant: GM Global Technology Operations LLC

Inventor： Kushal Narayanaswamy ,  Paul M. Najt

IPC: F01N3/00 ,  F01N3/10 ,  F01N3/20 ,  F02D41/00 ,  F02D41/02

CPC classification number: F01N3/20 ,  F01N3/2073 ,  F01N3/208 ,  F01N2240/25 ,  F01N2610/00 ,  F02D41/0082 ,  F02D41/0087 ,  F02D41/0235

Abstract: A powertrain includes an internal combustion engine with multiple cylinders and an aftertreatment system having a selective catalytic reduction device utilizing ammonia as a reductant. An ammonia generation cycle includes operating some portion of the cylinders at an air/fuel ratio conducive to producing molecular hydrogen and some portion of the cylinders at an air/fuel ratio conducive to producing NOx. An ammonia generation catalyst is utilized between the engine and the selective catalytic reduction device to produce ammonia.

Abstract translation: 动力系包括具有多个气缸的内燃机和具有利用氨作为还原剂的选择性催化还原装置的后处理系统。 氨生成循环包括以有利于产生分子氢的空气/燃料比操作一些气缸，以及有利于产生NOx的空气/燃料比的一部分气缸。 在发动机和选择性催化还原装置之间使用氨生成催化剂以产生氨。

公开(公告)号：US09903248B2

公开(公告)日：2018-02-27

申请号：US15097417

申请日：2016-04-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Kushal Narayanaswamy ,  Cherian A. Idicheria ,  Paul M. Najt ,  Gerald A. Szekely, Jr. ,  Joel G. Toner

IPC: F01N3/00 ,  F01N3/28 ,  F01N3/20

CPC classification number: F01N3/2882 ,  F01N3/021 ,  F01N3/101 ,  F01N3/20 ,  F01N3/2066 ,  F01N13/009 ,  F01N2240/28 ,  F01N2430/06 ,  Y02T10/22 ,  Y02T10/24

Abstract: An exhaust aftertreatment system for purifying an exhaust gas feedstream that is expelled from an internal combustion engine that is operable at an air/fuel ratio that is lean of stoichiometry is described. The exhaust aftertreatment system includes a barrier discharge plasma reactor that is disposed upstream relative to a catalytic reactor and electrically connected to a plasma controller. The barrier discharge plasma reactor is controlled to generate ozone from constituents of the exhaust gas feedstream when the internal combustion engine is operating at a lean air/fuel ratio and at a low temperature condition. The generated ozone reacts, in the catalytic reactor, to oxidize non-methane hydrocarbons contained in the exhaust gas feedstream when the internal combustion engine is operating at lean air/fuel ratio and at low temperature conditions.

公开(公告)号：US20140102081A1

公开(公告)日：2014-04-17

申请号：US13652549

申请日：2012-10-16

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Joel G. Toner ,  Kushal Narayanaswamy ,  Gerald A. Szekely, JR. ,  Paul M. Najt

IPC: F01N3/20

CPC classification number: F02D41/008 ,  F01N3/101 ,  F01N3/2066 ,  F01N3/208 ,  F01N2240/25 ,  F01N2610/02 ,  F02D41/0235 ,  Y02T10/22 ,  Y02T10/24

Abstract: A method for controlling ammonia generation in an exhaust gas feedstream output from an internal combustion engine equipped with an exhaust aftertreatment system including a first aftertreatment device includes executing an ammonia generation cycle to generate ammonia on the first aftertreatment device. A desired air-fuel ratio output from the engine and entering the exhaust aftertreatment system conducive for generating ammonia on the first aftertreatment device is determined. Operation of a selected combination of a plurality of cylinders of the engine is selectively altered to achieve the desired air-fuel ratio entering the exhaust aftertreatment system.

Abstract translation: 一种用于控制从配备有包括第一后​​处理装置的排气后处理系统的内燃机输出的废气原料流中的氨生成方法，包括在第一后处理装置上执行氨生成循环以产生氨。 确定从发动机输出并进入排气后处理系统的有利于在第一后处理装置上产生氨的期望的空燃比。 选择性地改变发动机的多个气缸的选定组合的操作，以实现进入排气后处理系统的期望空燃比。

公开(公告)号：US10519883B2

公开(公告)日：2019-12-31

申请号：US15995579

申请日：2018-06-01

Applicant: GM Global Technology Operations LLC

Inventor： Arun S. Solomon ,  Kushal Narayanaswamy ,  Gerald A. Szekely, Jr. ,  David P. Sczomak

IPC: F02D41/02 ,  F02M26/47 ,  F02D9/02 ,  F01N3/20 ,  F02D13/02 ,  F02P5/15 ,  F02D41/00 ,  F02D41/30 ,  F01N9/00

Abstract: A catalyst temperature control system of a vehicle includes a fuel control module configured to control fuel injection based on a target air/fuel ratio that is fuel lean relative to a stoichiometric air/fuel ratio and a target fuel injection start timing. An exhaust gas recirculation (EGR) control module is configured to control an EGR valve based on a target EGR opening. An adjustment module is configured to, when a temperature of a catalyst in an exhaust system is less than a sum of a predetermined light-out temperature of the catalyst and a predetermined temperature and the target air/fuel ratio is fuel lean relative to the stoichiometric air/fuel ratio, based on a comparison of an engine speed and a predetermined engine speed, selectively adjust at least one of: a target throttle opening, a target spark timing, the target fuel injection start timing, the target air/fuel ratio, and the target EGR opening.

公开(公告)号：US09957911B2

公开(公告)日：2018-05-01

申请号：US15046580

申请日：2016-02-18

Applicant: GM Global Technology Operations LLC

Inventor： David P. Sczomak ,  Kushal Narayanaswamy ,  Edward J. Keating

IPC: F02D41/30 ,  F02M26/15 ,  F02M26/35 ,  F02M26/38 ,  F02D35/00 ,  F02D41/00 ,  F01N3/20 ,  F02D41/14 ,  F02M26/05 ,  F02M26/43 ,  F02M26/71

CPC classification number: F02D41/3011 ,  F01N3/101 ,  F01N3/2066 ,  F01N3/2073 ,  F01N9/00 ,  F01N13/009 ,  F01N13/0093 ,  F01N2560/026 ,  F01N2900/0416 ,  F02D35/0015 ,  F02D41/005 ,  F02D41/0052 ,  F02D41/0065 ,  F02D41/008 ,  F02D41/1463 ,  F02M26/05 ,  F02M26/15 ,  F02M26/35 ,  F02M26/38 ,  F02M26/43 ,  F02M26/71 ,  Y02A50/2325 ,  Y02T10/22 ,  Y02T10/47

Abstract: An engine control system of a vehicle includes a fuel control module that controls fuel injection of a first cylinder of an engine based on a first target air/fuel ratio that is fuel lean relative to a stoichiometric air/fuel ratio and that controls fuel injection of a second cylinder of the engine based on a second target air/fuel ratio that is fuel rich relative to stoichiometry. The first cylinder outputs exhaust to a first three way catalyst (TWC), and the second cylinder outputs exhaust to an exhaust gas recirculation (EGR) valve. An EGR control module controls opening of the EGR valve to: (i) a second TWC that reacts with nitrogen oxides (NOx) in the exhaust and outputs ammonia to a selective catalytic reduction (SCR) catalyst; and (ii) a conduit that recirculates exhaust back to an intake system of the engine.

公开(公告)号：US09926825B2

公开(公告)日：2018-03-27

申请号：US15132601

申请日：2016-04-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Cherian A. Idicheria ,  Kushal Narayanaswamy ,  Paul M. Najt ,  Gerald A. Szekely, Jr. ,  Joel G. Toner

IPC: F01N3/00 ,  F01N9/00 ,  F01N3/20

CPC classification number: F01N9/00 ,  F01N3/021 ,  F01N3/101 ,  F01N3/2066 ,  F01N13/009 ,  F01N2240/28 ,  F01N2610/02 ,  Y02A50/2325 ,  Y02T10/22 ,  Y02T10/24 ,  Y02T10/47

Abstract: An exhaust aftertreatment system for purifying an exhaust gas feedstream expelled from an internal combustion engine that is operable at an air/fuel ratio that is lean of stoichiometry is described. The exhaust aftertreatment system includes a plasma reactor disposed upstream of a selective catalytic reactor device. The plasma reactor is electrically connected to a plasma controller. The plasma controller controls the plasma reactor to generate ozone from constituents of the exhaust gas feedstream, and the ozone reacts to oxidize nitrogen oxide contained in the exhaust gas feedstream to form nitrogen dioxide. The nitrogen dioxide reacts with a reductant in the selective catalytic reactor device to form elemental nitrogen and water.

公开(公告)号：US20170298800A1

公开(公告)日：2017-10-19

申请号：US15132601

申请日：2016-04-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Cherian A. Idicheria ,  Kushal Narayanaswamy ,  Paul M. Najt ,  Gerald A. Szekely, JR. ,  Joel G. Toner

IPC: F01N9/00 ,  F01N3/20

CPC classification number: F01N9/00 ,  F01N3/021 ,  F01N3/101 ,  F01N3/2066 ,  F01N13/009 ,  F01N2240/28 ,  F01N2610/02 ,  Y02A50/2325 ,  Y02T10/22 ,  Y02T10/24 ,  Y02T10/47

Abstract: An exhaust aftertreatment system for purifying an exhaust gas feedstream expelled from an internal combustion engine that is operable at an air/fuel ratio that is lean of stoichiometry is described. The exhaust aftertreatment system includes a plasma reactor disposed upstream of a selective catalytic reactor device. The plasma reactor is electrically connected to a plasma controller. The plasma controller controls the plasma reactor to generate ozone from constituents of the exhaust gas feedstream, and the ozone reacts to oxidize nitrogen oxide contained in the exhaust gas feedstream to form nitrogen dioxide. The nitrogen dioxide reacts with a reductant in the selective catalytic reactor device to form elemental nitrogen and water.

公开(公告)号：US20170298799A1

公开(公告)日：2017-10-19

申请号：US15097417

申请日：2016-04-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Kushal Narayanaswamy ,  Cherian A. Idicheria ,  Paul M. Najt ,  Gerald A. Szekely, JR. ,  Joel G. Toner

IPC: F01N3/28 ,  F01N3/20

CPC classification number: F01N3/2882 ,  F01N3/021 ,  F01N3/101 ,  F01N3/20 ,  F01N3/2066 ,  F01N13/009 ,  F01N2240/28 ,  F01N2430/06 ,  Y02T10/22 ,  Y02T10/24

Abstract: An exhaust aftertreatment system for purifying an exhaust gas feedstream that is expelled from an internal combustion engine that is operable at an air/fuel ratio that is lean of stoichiometry is described. The exhaust aftertreatment system includes a barrier discharge plasma reactor that is disposed upstream relative to a catalytic reactor and electrically connected to a plasma controller. The barrier discharge plasma reactor is controlled to generate ozone from constituents of the exhaust gas feedstream when the internal combustion engine is operating at a lean air/fuel ratio and at a low temperature condition. The generated ozone reacts, in the catalytic reactor, to oxidize non-methane hydrocarbons contained in the exhaust gas feedstream when the internal combustion engine is operating at lean air/fuel ratio and at low temperature conditions.