US20090282816A1 - Fresh Air Bypass to Cool Down Hot Exhaust in DPF Regeneration Mode at Low Vehicle Speed and Idle - Google Patents
Fresh Air Bypass to Cool Down Hot Exhaust in DPF Regeneration Mode at Low Vehicle Speed and Idle Download PDFInfo
- Publication number
- US20090282816A1 US20090282816A1 US12/123,016 US12301608A US2009282816A1 US 20090282816 A1 US20090282816 A1 US 20090282816A1 US 12301608 A US12301608 A US 12301608A US 2009282816 A1 US2009282816 A1 US 2009282816A1
- Authority
- US
- United States
- Prior art keywords
- passage
- engine
- particulate filter
- diesel particulate
- exhaust
- 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
Links
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/16—Control of the pumps by bypassing charging 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
- F01N13/0097—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
-
- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/082—Other arrangements or adaptations of exhaust conduits of tailpipe, e.g. with means for mixing air with exhaust for exhaust cooling, dilution or evacuation
-
- 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
- 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
- F01N3/103—Oxidation catalysts for HC and CO only
-
- 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
- F01N9/00—Electrical control of exhaust gas treating apparatus
- F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
-
- 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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/14—Nitrogen oxides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/02—EGR systems specially adapted for supercharged engines
- F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
- F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Toxicology (AREA)
- Materials Engineering (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
Description
- The present disclosure relates to a diesel engine system, and more particularly to a diesel engine system incorporating a fresh air bypass to cool down hot exhaust in a diesel particulate filter regeneration mode at low vehicle speed and idle.
- The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
- A diesel particulate filter is generally required for diesel engines to meet particulate matter emission targets set by the Environmental Protection Agency for 2007 model year and beyond. The diesel particulate filter traps the particulate matter during normal operating conditions and has to be regenerated periodically at high exhaust temperatures at any operating conditions. Generally speaking, the diesel particulate filter regeneration interval is about 250 to 350 miles, depending on the duty cycles selected for the engine system. However, high exhaust temperatures of between 450 degrees Celsius and 600 degrees Celsius are encountered at the tailpipe exit during diesel particulate filter regeneration at idle, which raises a safety concern. To address the concern, an exhaust cooler or jet pump has previously been located on the tailpipe. The cooler entrains the surrounding air into the hot exhaust and lowers the exhaust temperature. In order to entrain a sufficient amount of air, the nozzle diameter of the cooler usually is smaller than the diameter of the exhaust pipe. This restricts the exhaust flow and adds additional back pressure to the exhaust system. This consequently results in increased fuel consumption and limits the maximum power that can be developed at a rated condition. Any device that is added to the tailpipe for the purposes of cooling exhaust at idle could potentially increase the back pressure at rated condition.
- The system of the present disclosure provides a bypass for passing fresh air from the charger cooler outlet or inlet to the hot exhaust after the diesel particulate filter during a diesel particulate filter regeneration mode at idle and at low speed mode without adding back pressure. The fresh air will be mixed with the hot exhaust in the tailpipe and bring the exhaust temperature down at the exit.
- Further areas of applicability will become apparent from the description provided herein. It should be understood that the description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure.
- The drawing described herein is for illustration purposes only and is not intended to limit the scope of the present disclosure in any way.
- The FIGURE provides a schematic diagram of the engine system according to the principles of the present disclosure incorporating a fresh air bypass to cool down the hot exhaust in the diesel particulate filter regeneration mode at low vehicle speed and idle.
- The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses.
- With reference to the FIGURE, the engine system 10 of the present disclosure will now be described. The engine system 10 includes a
diesel engine 12 including an engine block having a plurality ofbores defining cylinders 14. Anair intake manifold 16 is connected to the engine for providing intake air to thecylinders 14. Anair intake passage 18 is connected to theair intake manifold 16 and includes anintake throttle valve 20 in communication with aturbocharger 21 and acharger air cooler 24 for providing compressed cooled air to theengine 12. Turbocharger 21 includes acompressor 22 in communication with intake air and a variable geometry (VG)turbine 32 in communication with the exhaust gas. - An
air exhaust manifold 28 is provided in communication with thecylinders 14 of theengine 12 and is connected to anexhaust passage 30. The VGturbine 32 is in communication with theexhaust passage 30 and drives thecompressor 22. Turbochargers with a variable geometry turbine change the output of the turbine as a function of engine load. In this way the optimum boost pressure can be maintained and optimum use can be made of the energy in the exhaust gas. Cross-sectional changes are made by resetting the turbine blades (smaller contact surface at low speeds, larger contact surface at high speeds). VG turbine turbochargers are particularly efficient at partial load and eliminate “turbo lag”. They increase engine power, increase throttle response and can also have a beneficial effect on particulate emissions. In addition, they open new perspectives regarding the control of exhaust gas recirculation. The hot exhaust from the engine cylinder spins the turbine which drives the compressor to boost the intake pressure. - An exhaust
gas recirculation passage 34 is provided with an exhaustgas recirculation valve 36 that communicates exhaust gasses from theexhaust passage 30 back to theintake passage 18 as controlled by anengine controller 50. Theexhaust passage 30 further includes a diesel oxidation catalyst (DOC) and NOx device 40 and adiesel particulate filter 42 for filtering particulate matter from the emissions. The diesel oxidation catalyst converts the emissions to oxide HC, CO and NO from the engine and provides heat and necessary chemical species to downstream catalyst converters. The NOx device reduces engine-out NOx emissions. A diesel after-treatment system, which is composed of DOC, NOx devices and a Diesel Particulate Filter (DPF), will control the harmful engine emissions like hydrocarbon (HC), nitrogen oxide (NOx), particulate matter (PM), carbon monoxide (CO) and so on. - The engine system 10 further includes a
bypass passage 44 that can communicate from the outlet side of thecharger cooler 24 to the downstream side of thediesel particulate filter 42. Abypass passage 45 can alternatively be connected to the upstream side of the charger cooler, as illustrated in dashed lines, and connected to theexhaust passage 30 at the downstream side of thediesel particulate filter 42. Abypass valve 48 is provided in thebypass passage 44 and is in communication with anengine controller 50 that controls the engine system 10 to operate in a diesel particulate filter regeneration mode based upon a selected duty cycle. Thediesel particulate filter 42 will capture particulate matter entrained in the diesel exhaust on a ceramic or metallic substrate. At a certain point this particulate matter may be removed through regeneration, the process by which the temperature of the exhaust flowing through the DPF reaches a sufficient level to simply burn away the built-up particulates. In many cases, especially where there is a great amount of engine cycling or vehicle stopping and starting, temperatures may not remain high enough for a sufficient time period to remove the particulate matter. In those cases, active systems are required, most of which involve burning a small amount of diesel fuel in the exhaust stream to raise the temperature enough to burn away the particulate matter. An active DPF regeneration typically takes about 20-30 min. When the engine system 10 is in the diesel particulate filter regeneration mode, and theengine 12 is either at idle or at low speed (5 mph or less), theengine controller 50 controls thebypass valve 48 to allow fresh air from theintake passage 18 to be bypassed to theexhaust tailpipe 52 where the fresh air is mixed with the hot exhaust gases to provide a reduced exhaust temperature at the exit of thetailpipe 52. Theturbocharger 21 provides compressed air at a pressure greater than the pressure of the pressure of the exhaust gas. - With the system of the present disclosure, there is no increase of back pressure that results in lower fuel economy. Furthermore, there are no moving parts in the exhaust system and there is no impact on engine performance during other driving conditions. The system also adds very little cost, including only the additional bypass passage tubing and bypass valve. The high pumping loss due to fresh charge air bypass enhances the capability of the diesel particulate filter regeneration cycle when the vehicle is at idle.
Claims (17)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/123,016 US20090282816A1 (en) | 2008-05-19 | 2008-05-19 | Fresh Air Bypass to Cool Down Hot Exhaust in DPF Regeneration Mode at Low Vehicle Speed and Idle |
DE102009020466A DE102009020466A1 (en) | 2008-05-19 | 2009-05-08 | Fresh air bypass for cooling hot exhaust gas in DPF regeneration mode at low vehicle speed and idle |
CN200910203073XA CN101586489B (en) | 2008-05-19 | 2009-05-19 | Fresh air bypass to cool down hot exhaust in dpf regeneration mode |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/123,016 US20090282816A1 (en) | 2008-05-19 | 2008-05-19 | Fresh Air Bypass to Cool Down Hot Exhaust in DPF Regeneration Mode at Low Vehicle Speed and Idle |
Publications (1)
Publication Number | Publication Date |
---|---|
US20090282816A1 true US20090282816A1 (en) | 2009-11-19 |
Family
ID=41314830
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/123,016 Abandoned US20090282816A1 (en) | 2008-05-19 | 2008-05-19 | Fresh Air Bypass to Cool Down Hot Exhaust in DPF Regeneration Mode at Low Vehicle Speed and Idle |
Country Status (3)
Country | Link |
---|---|
US (1) | US20090282816A1 (en) |
CN (1) | CN101586489B (en) |
DE (1) | DE102009020466A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100132356A1 (en) * | 2008-11-28 | 2010-06-03 | Hyundai Motor Company | Purification System for Variable Post Injection in LP EGR and Control Method for the Same |
US20110072797A1 (en) * | 2009-09-29 | 2011-03-31 | Ford Global Technologies, Llc | Controlling operation of exhaust of an engine including a particulate filter |
US20160032799A1 (en) * | 2014-08-04 | 2016-02-04 | Hyundai Motor Company | Method and system of maintaining dpf regeneration for improving durability of dpf filter |
CN113983609A (en) * | 2020-07-10 | 2022-01-28 | 北京同方洁净技术有限公司 | Double-channel air ventilation and purification device and air purification method thereof |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010044102A1 (en) * | 2010-11-18 | 2012-05-24 | Ford Global Technologies, Llc | Exhaust system for internal combustion engines with particle filter |
CN114673580B (en) * | 2022-04-12 | 2023-03-21 | 潍柴动力股份有限公司 | Engine exhaust gas flow management system and control method |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4313523A (en) * | 1980-06-23 | 1982-02-02 | Copen Dennis E | Automotive exhaust system incorporating venturi to reduce back pressure |
US5701735A (en) * | 1994-08-08 | 1997-12-30 | Toyota Jidosha Kabushiki Kaisha | Method for regenerating a particulate collection filter and an exhaust emission control system with a particulate collection filter |
US20050022520A1 (en) * | 2003-07-31 | 2005-02-03 | Nissan Motor Co., Ltd. | Exhaust gas cleaning system |
US20060096281A1 (en) * | 2004-11-08 | 2006-05-11 | Southwest Research Institute | Exhaust system and method for controlling exhaust gas flow and temperature through regenerable exhaust gas treatment devices |
US7243488B2 (en) * | 2005-08-30 | 2007-07-17 | Delphi Technologies, Inc. | Method and apparatus for controlling regeneration temperature in a diesel particulate trap |
US20070204594A1 (en) * | 2006-03-02 | 2007-09-06 | Nissan Motor Co., Ltd. | Exhaust purification system for hybrid vehicle |
US20070261399A1 (en) * | 2006-05-10 | 2007-11-15 | Mallampalli Hemant P | Cooling device |
WO2008082492A2 (en) * | 2006-12-22 | 2008-07-10 | Volvo Group North America, Inc. | Method and apparatus for controlling exhaust temperature of a diesel engine |
US20090100826A1 (en) * | 2007-10-18 | 2009-04-23 | Gm Global Technology Operations, Inc. | Diesel Exhaust Gas Temperature Reduction |
US20090120066A1 (en) * | 2007-11-14 | 2009-05-14 | Paccar Inc. | Cooling device for high temperature exhaust |
US20090293836A1 (en) * | 2008-05-30 | 2009-12-03 | Schindler Rodney A | Engine exhaust cooler and air pre-cleaner aspirator |
US20100043407A1 (en) * | 2006-12-05 | 2010-02-25 | Mack Trucks, Inc. | Engine with exhaust cooling and method |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3538155A1 (en) * | 1985-10-26 | 1987-04-30 | Fev Forsch Energietech Verbr | METHOD FOR THE OXIDATION OF PARTICLES DEPOSED IN SOOT FILTERING SYSTEMS |
-
2008
- 2008-05-19 US US12/123,016 patent/US20090282816A1/en not_active Abandoned
-
2009
- 2009-05-08 DE DE102009020466A patent/DE102009020466A1/en not_active Withdrawn
- 2009-05-19 CN CN200910203073XA patent/CN101586489B/en not_active Expired - Fee Related
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4313523A (en) * | 1980-06-23 | 1982-02-02 | Copen Dennis E | Automotive exhaust system incorporating venturi to reduce back pressure |
US5701735A (en) * | 1994-08-08 | 1997-12-30 | Toyota Jidosha Kabushiki Kaisha | Method for regenerating a particulate collection filter and an exhaust emission control system with a particulate collection filter |
US20050022520A1 (en) * | 2003-07-31 | 2005-02-03 | Nissan Motor Co., Ltd. | Exhaust gas cleaning system |
US20060096281A1 (en) * | 2004-11-08 | 2006-05-11 | Southwest Research Institute | Exhaust system and method for controlling exhaust gas flow and temperature through regenerable exhaust gas treatment devices |
US7243488B2 (en) * | 2005-08-30 | 2007-07-17 | Delphi Technologies, Inc. | Method and apparatus for controlling regeneration temperature in a diesel particulate trap |
US20070204594A1 (en) * | 2006-03-02 | 2007-09-06 | Nissan Motor Co., Ltd. | Exhaust purification system for hybrid vehicle |
US20070261399A1 (en) * | 2006-05-10 | 2007-11-15 | Mallampalli Hemant P | Cooling device |
US20100043407A1 (en) * | 2006-12-05 | 2010-02-25 | Mack Trucks, Inc. | Engine with exhaust cooling and method |
WO2008082492A2 (en) * | 2006-12-22 | 2008-07-10 | Volvo Group North America, Inc. | Method and apparatus for controlling exhaust temperature of a diesel engine |
US20100043430A1 (en) * | 2006-12-22 | 2010-02-25 | Volvo Group North America, Inc. | Method and apparatus for controlling exhaust temperature of a diesel engine |
US20090100826A1 (en) * | 2007-10-18 | 2009-04-23 | Gm Global Technology Operations, Inc. | Diesel Exhaust Gas Temperature Reduction |
US20090120066A1 (en) * | 2007-11-14 | 2009-05-14 | Paccar Inc. | Cooling device for high temperature exhaust |
US20090293836A1 (en) * | 2008-05-30 | 2009-12-03 | Schindler Rodney A | Engine exhaust cooler and air pre-cleaner aspirator |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100132356A1 (en) * | 2008-11-28 | 2010-06-03 | Hyundai Motor Company | Purification System for Variable Post Injection in LP EGR and Control Method for the Same |
US8341939B2 (en) * | 2008-11-28 | 2013-01-01 | Hyundai Motor Company | Purification system for variable post injection in LP EGR and control method for the same |
US20110072797A1 (en) * | 2009-09-29 | 2011-03-31 | Ford Global Technologies, Llc | Controlling operation of exhaust of an engine including a particulate filter |
US8347613B2 (en) * | 2009-09-29 | 2013-01-08 | Ford Global Technologies, Llc | Controlling operation of exhaust of an engine including a particulate filter |
US8739518B2 (en) | 2009-09-29 | 2014-06-03 | Ford Global Technologies, Llc | Controlling operation of exhaust of an engine including a particulate filter |
US20160032799A1 (en) * | 2014-08-04 | 2016-02-04 | Hyundai Motor Company | Method and system of maintaining dpf regeneration for improving durability of dpf filter |
CN113983609A (en) * | 2020-07-10 | 2022-01-28 | 北京同方洁净技术有限公司 | Double-channel air ventilation and purification device and air purification method thereof |
Also Published As
Publication number | Publication date |
---|---|
CN101586489B (en) | 2013-01-23 |
CN101586489A (en) | 2009-11-25 |
DE102009020466A1 (en) | 2009-12-24 |
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Owner name: GM GLOBAL TECHNOLOGY OPERATIONS, INC., MICHIGAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LI, JIANWEN;MITAL, RAHUL;LUCKHAM, MICHAEL CHRISTOPHER;AND OTHERS;REEL/FRAME:021002/0655;SIGNING DATES FROM 20080512 TO 20080513 |
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Owner name: UNITED STATES DEPARTMENT OF THE TREASURY, DISTRICT Free format text: SECURITY AGREEMENT;ASSIGNOR:GM GLOBAL TECHNOLOGY OPERATIONS, INC.;REEL/FRAME:022201/0363 Effective date: 20081231 Owner name: UNITED STATES DEPARTMENT OF THE TREASURY,DISTRICT Free format text: SECURITY AGREEMENT;ASSIGNOR:GM GLOBAL TECHNOLOGY OPERATIONS, INC.;REEL/FRAME:022201/0363 Effective date: 20081231 |
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