US20150107242A1 - Exhaust system with post-operation cooling for a vehicle, and a method thereof - Google Patents

Exhaust system with post-operation cooling for a vehicle, and a method thereof Download PDF

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Publication number
US20150107242A1
US20150107242A1 US14/057,012 US201314057012A US2015107242A1 US 20150107242 A1 US20150107242 A1 US 20150107242A1 US 201314057012 A US201314057012 A US 201314057012A US 2015107242 A1 US2015107242 A1 US 2015107242A1
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US
United States
Prior art keywords
exhaust gas
conduit
air
air intake
air pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US14/057,012
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English (en)
Inventor
Michael G. Long
Gerald M. Simon
Kulbir S. Dhuga
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GM Global Technology Operations LLC
Original Assignee
GM Global Technology Operations LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GM Global Technology Operations LLC filed Critical GM Global Technology Operations LLC
Priority to US14/057,012 priority Critical patent/US20150107242A1/en
Assigned to GM Global Technology Operations LLC reassignment GM Global Technology Operations LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DHUGA, KULBIR S., LONG, MICHAEL G., SIMON, GERALD M.
Assigned to WILMINGTON TRUST COMPANY reassignment WILMINGTON TRUST COMPANY SECURITY INTEREST Assignors: GM Global Technology Operations LLC
Priority to DE201410114863 priority patent/DE102014114863A1/de
Priority to CN201410544902.1A priority patent/CN104564254A/zh
Assigned to GM Global Technology Operations LLC reassignment GM Global Technology Operations LLC RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: WILMINGTON TRUST COMPANY
Publication of US20150107242A1 publication Critical patent/US20150107242A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/05—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of air, e.g. by mixing exhaust with air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/30—Arrangements for supply of additional air
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Definitions

  • the present invention relates to an exhaust system with post-operation cooling for a vehicle, and a method thereof.
  • Vehicle exhaust systems often include various components that utilize and/or treat the exhaust gas generated by a heat generating device, such as an internal combustion engine before the exhaust gas is discharged.
  • a heat generating device such as an internal combustion engine before the exhaust gas is discharged.
  • Such components may include, but are not limited to, a turbocharger, a catalytic converter, a diesel oxidation canister, and the like.
  • the exhaust gas heats the components to high temperatures when the exhaust system is in operation, i.e., the internal combustion engine is operating and generating exhaust gas.
  • temperature excursions may occur within the components.
  • the components may then radiate heat to other nearby thermally sensitive components in other systems within the vehicle.
  • insulation shielding and external convection are used to mitigate the effects of the temperature excursions where the exhaust components are routed through thermally sensitive locations.
  • An exhaust system for a vehicle is provided.
  • the vehicle generally has a heat generating device that generates exhaust gas.
  • the exhaust system includes an exhaust gas conduit in fluid communication with the heat generating device to receive the exhaust gas. At least a portion of the exhaust gas is flowable through and dischargeable from the exhaust gas conduit.
  • the exhaust system also includes an exhaust gas component in fluid communication with the exhaust gas conduit. The at least a portion of the exhaust gas is also flowable through the exhaust gas component.
  • the exhaust system also includes an air intake conduit through which outside air is flowable.
  • the air intake conduit is in fluid communication with the exhaust gas conduit upstream of the at least one exhaust gas component.
  • the exhaust system further includes an air pump in fluid communication with the air intake conduit. The air pump is configured to draw the outside air into the air intake conduit such that the outside air is supplied to the exhaust gas conduit to cool the at least one exhaust gas component.
  • a vehicle is also provided.
  • the vehicle includes a heat generating device configured to generate exhaust gas, and the exhaust system described above.
  • a method of cooling an exhaust gas component of the exhaust system described above includes introducing outside air into the exhaust system and through the exhaust gas component to internally cool the exhaust gas component post-operation. This may be accomplished by drawing in the outside air by the air pump and supplying the outside air upstream of the exhaust gas component until at least one condition is satisfied.
  • the condition may be when the air pump has been operating for a predetermined length of time, or when a temperature of the exhaust gas component reaches a predetermined temperature.
  • the method finally includes turning off, by the controller, the air pump.
  • FIG. 1 is a schematic flow diagram of an exhaust system for a vehicle
  • FIG. 2 is a schematic flow diagram illustrating a method of operating the exhaust system of FIG. 1 to cool an exhaust gas component of the exhaust system.
  • FIG. 1 an exhaust system 10 with post-operation cooling for a vehicle 12 is shown in FIG. 1 .
  • the vehicle 12 has a heat generating device 14 that generates exhaust gas 17 .
  • the heat generating device 14 may be, but is not limited to, an internal combustion engine.
  • the exhaust system 10 includes an exhaust gas conduit 16 or manifold in fluid communication with the heat generating device 14 such that it may receive the exhaust gas 17 from the heat generating device 14 . At least a portion of the exhaust gas 17 is flowable through and dischargeable from the exhaust gas conduit 16 .
  • the exhaust system 10 also may include various exhaust gas components 18 , 20 in fluid communication with the exhaust gas conduit 16 .
  • the exhaust gas components 18 , 20 may be located in the underhood or underbody portion of the vehicle 12 in close proximity to at least one external component 30 of another vehicle system (not shown).
  • the exhaust gas 17 is flowable through the exhaust gas components 18 , 20 , each of which may interact with the exhaust gas 17 for a specific function depending upon the component.
  • the exhaust gas components 18 , 20 may be, but are not limited to, a turbocharger 18 and an exhaust gas treatment device 20 .
  • the exhaust gas treatment device 20 may be, but is not limited to, a diesel oxidation canister, a catalytic converter, and the like.
  • exhaust gas treatment device 20 While only one exhaust gas treatment device 20 is shown, it should be appreciated that there may be any number of exhaust gas treatment devices 20 in the exhaust system 10 . Furthermore, while the exhaust gas treatment device 20 is shown downstream of the turbocharger 18 , it should be appreciated that at least one exhaust gas treatment device 20 may be upstream of the turbocharger 18 .
  • the exhaust gas 17 generated by the heat generating device 14 is at a high temperature and as such, heats the exhaust gas conduit 16 and the exhaust gas components 18 , 20 as it flows through them.
  • the vehicle 12 and the heat generating device 14 are turned off, and therefore there is no exhaust gas flow and no engine cooling fans (not shown) are operating, temperature excursions may occur within the exhaust gas conduit 16 and the exhaust gas components 18 , 20 . Consequently, the exhaust gas conduit 16 and the exhaust gas components 18 , 20 may rise to even higher temperatures, and may radiate heat to the external component(s) 30 . As such, it is desirable to cool the exhaust gas conduit 16 and/or the exhaust gas components 18 , 20 after the vehicle 12 and the heat generating device 14 are turned off to reduce the occurrence of such temperature excursions.
  • the exhaust system 10 also includes an air intake conduit 22 , through which outside air 23 is flowable, and an air pump 24 in fluid communication with the air intake conduit 22 .
  • the air intake conduit 22 is in fluid communication with the exhaust gas conduit 16 upstream of the exhaust gas component 18 , 20 that is desired to be cooled. Generally, this may be the exhaust gas component 18 , 20 that is furthest upstream in the exhaust gas conduit 16 , i.e., closest to the heat generating device 14 (the turbocharger 18 in FIG. 1 ). This allows any exhaust gas components 18 , 20 downstream (the exhaust gas treatment device 20 in FIG. 1 ) to be cooled as well. However, it should be appreciated that the air intake conduit 22 may be connected to the exhaust gas conduit 16 upstream of any exhaust gas component 18 , 20 .
  • the air pump 24 is configured to draw the outside air 23 into the air intake conduit 22 to be supplied to the exhaust gas conduit 16 .
  • the air pump 24 may be a low pressure, high volume pump, including, but not limited to, a vane pump.
  • the exhaust gas 17 heats the exhaust gas conduit 16 and the exhaust gas component(s) 18 , 20 to a temperature above outside air temperature.
  • the outside air 23 introduced into the exhaust gas conduit 16 may cool the exhaust gas conduit 16 and the exhaust gas component(s) 18 , 20 , after which it may be discharged from the exhaust gas conduit 16 , similar to the exhaust gas 17 .
  • the temperature of the external component(s) 30 may be reduced due to less available heat radiated from the exhaust gas component(s) 18 , 20 .
  • the exhaust system 10 may also include an air intake control valve 26 in fluid communication with the air intake conduit 22 .
  • the air intake control valve 26 may be located downstream of the air pump 24 , and may be configured to control the flow of outside air 23 to the exhaust gas conduit 16 when the air pump 24 is in operation, as well as to prevent backflow of any exhaust gas 17 to the air pump 24 when it is not in operation.
  • the air intake control valve 26 may be any open/close valve, including, but not limited to, a gate valve, and may be electronically actuated.
  • the exhaust system 10 may further include a temperature sensor 32 for each of the exhaust gas components 18 , 20 and/or the external component(s) 30 .
  • the temperature sensor 32 may be configured to measure the temperature of the respective exhaust gas component 18 , 20 and/or external component(s) 30 after and/or during operation to determine the operation of the air pump 24 and the air intake control valve 26 , as explained in more detail below.
  • the vehicle 12 may include at least one controller 28 configured to control the operation of at least the air pump 24 , i.e., turn the air pump 24 on and off, and the air intake control valve 26 , i.e., open and close the air intake control valve 26 .
  • the at least one controller 28 may be configured to determine how long the air pump 24 should operate based on at least one parameter and condition.
  • the parameter may be the length of time that the air pump 24 operates. When the air pump 24 has been running for a predetermined length of time, the controller 28 may turn off the air pump 24 , as well as close the air intake control valve 26 .
  • the parameter may be the temperature of at least one of the exhaust gas components 18 , 20 and/or the external component(s) 30 .
  • the controller 28 may turn off the air pump 24 and close the air intake control valve 26 .
  • the predetermined length of time and/or the predetermined temperature may be programmed into the controller 28 , and may be adjustable.
  • Method 100 begins at steps 102 after the vehicle 12 and the heat generating device 14 have been turned off.
  • the controller 28 turns on the air pump 24 such that outside air 23 is drawn into the air intake conduit 22 .
  • step 102 method 100 proceeds to step 104 at which the outside air 23 is deposited from the air intake conduit 22 to the exhaust gas conduit 16 upstream of the exhaust gas component 18 , 20 desired to be cooled until at least one condition has been satisfied.
  • the condition may be that the air pump 24 has run for a predetermined length of time, or that the temperature of the exhaust gas component 18 , 20 and/or the external component(s) 30 have fallen to a predetermined temperature.
  • step 104 method 100 proceeds to step 106 at which the controller 28 shuts down the air pump 24 .
  • method 100 may include opening the air intake control valve 26 before depositing the outside air into the exhaust gas conduit 16 . This may occur before, after, or simultaneously with the turning on of the air pump 24 . Method 100 may also include closing the air intake control valve 26 after the condition has been satisfied. This may occur before, after, or simultaneously with the shutting down of the air pump 24 .

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
US14/057,012 2013-10-18 2013-10-18 Exhaust system with post-operation cooling for a vehicle, and a method thereof Abandoned US20150107242A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US14/057,012 US20150107242A1 (en) 2013-10-18 2013-10-18 Exhaust system with post-operation cooling for a vehicle, and a method thereof
DE201410114863 DE102014114863A1 (de) 2013-10-18 2014-10-14 Abgassystem mit einer nach dem Betrieb erfolgenden Kühlung für ein Fahrzeug sowie ein Verfahren dafür
CN201410544902.1A CN104564254A (zh) 2013-10-18 2014-10-15 用于车辆的具有后操作冷却的排气系统和其方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14/057,012 US20150107242A1 (en) 2013-10-18 2013-10-18 Exhaust system with post-operation cooling for a vehicle, and a method thereof

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US20150107242A1 true US20150107242A1 (en) 2015-04-23

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US14/057,012 Abandoned US20150107242A1 (en) 2013-10-18 2013-10-18 Exhaust system with post-operation cooling for a vehicle, and a method thereof

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US (1) US20150107242A1 (zh)
CN (1) CN104564254A (zh)
DE (1) DE102014114863A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11268427B2 (en) * 2020-01-08 2022-03-08 Cnh Industrial America Llc Aspiration systems for work vehicles including exhaust tubes having airflow area modifiers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110017993A (zh) * 2019-04-12 2019-07-16 武汉东测科技有限责任公司 一种模拟高原海拔气候下的内燃机进气、排气压力模拟试验系统及其试验方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4674283A (en) * 1984-10-16 1987-06-23 Ngk Spark Plug Co., Ltd. Turbocharging system for an internal combustion engine
US6145302A (en) * 1997-08-20 2000-11-14 Siemens Aktiengesellschaft Method for monitoring a catalytic converter
US6802181B2 (en) * 2003-01-14 2004-10-12 General Motors Corporation Method and apparatus for monitoring catalyst efficiency and secondary air injection
US20070163246A1 (en) * 2006-01-16 2007-07-19 Robert Wassmur Method and arrangement for cooling an exhaust system
US20110131962A1 (en) * 2008-08-08 2011-06-09 Toyota Jidosha Kabushiki Kaisha Exhaust heat recovery system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4674283A (en) * 1984-10-16 1987-06-23 Ngk Spark Plug Co., Ltd. Turbocharging system for an internal combustion engine
US6145302A (en) * 1997-08-20 2000-11-14 Siemens Aktiengesellschaft Method for monitoring a catalytic converter
US6802181B2 (en) * 2003-01-14 2004-10-12 General Motors Corporation Method and apparatus for monitoring catalyst efficiency and secondary air injection
US20070163246A1 (en) * 2006-01-16 2007-07-19 Robert Wassmur Method and arrangement for cooling an exhaust system
US20110131962A1 (en) * 2008-08-08 2011-06-09 Toyota Jidosha Kabushiki Kaisha Exhaust heat recovery system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11268427B2 (en) * 2020-01-08 2022-03-08 Cnh Industrial America Llc Aspiration systems for work vehicles including exhaust tubes having airflow area modifiers

Also Published As

Publication number Publication date
CN104564254A (zh) 2015-04-29
DE102014114863A1 (de) 2015-04-23

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AS Assignment

Owner name: GM GLOBAL TECHNOLOGY OPERATIONS LLC, MICHIGAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LONG, MICHAEL G.;SIMON, GERALD M.;DHUGA, KULBIR S.;REEL/FRAME:031974/0093

Effective date: 20131011

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Owner name: WILMINGTON TRUST COMPANY, DELAWARE

Free format text: SECURITY INTEREST;ASSIGNOR:GM GLOBAL TECHNOLOGY OPERATIONS LLC;REEL/FRAME:033135/0440

Effective date: 20101027

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Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:WILMINGTON TRUST COMPANY;REEL/FRAME:034189/0065

Effective date: 20141017

STCB Information on status: application discontinuation

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