CN101526023A - Diesel particulate filter extended idle regeneration - Google Patents
Diesel particulate filter extended idle regeneration Download PDFInfo
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- CN101526023A CN101526023A CN200810149765A CN200810149765A CN101526023A CN 101526023 A CN101526023 A CN 101526023A CN 200810149765 A CN200810149765 A CN 200810149765A CN 200810149765 A CN200810149765 A CN 200810149765A CN 101526023 A CN101526023 A CN 101526023A
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- diesel engine
- control module
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- speed changer
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- 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
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Abstract
A method of regenerating a diesel particulate filter (DPF) may include operating a vehicle including a diesel engine at an idle condition and applying a load to the diesel engine during the idle condition to increase an exhaust temperature of the diesel engine relative to a nominal idle condition. The increased exhaust temperature may regenerate a diesel particulate filter of the diesel engine during the idle condition.
Description
The cross reference of related application
[0001] the application requires in the U.S. Patent application No.11/965 of submission on December 27th, 2007,057 preference.The application requires in the U.S. Provisional Application No.60/959 of submission on July 18th, 2007,967 rights and interests.The full content of above-mentioned application is incorporated this paper into by reference.
Technical field
[0002] this disclosure relates to the diesel engine operation, relates more specifically to the regeneration of diesel particulate filter.
Background technique
[0003] content of this part only provides the background information relevant with this disclosure, and may not constitute prior art.
[0004] diesel particulate filter (DPF) vehicle that is used for having diesel engine is to reduce the discharging of the particulate matter (soot) that produces during the burning.DPF removes soot usually and soot is stored in wherein from exhaust airstream.After reaching predetermined soot level, DPF regenerates usually or purifies.DPF is by means of the combustion process of revising diesel engine and/or inject fuel into and regenerate with the temperature that increases exhaust gas in the blast air or purify.
Summary of the invention
[0005] method of a kind of diesel particulate filter regeneration (DPF) comprise with idling conditions operation comprise the vehicle of diesel engine and during idling conditions imposed load give described diesel engine to increase the delivery temperature of diesel engine with respect to specified idling conditions.The delivery temperature that increases can diesel regenerated motor during idling conditions diesel particulate filter.
[0006] described method comprises that also the particulate matter of determining among the DPF gathers level and applies described load during greater than preset limit value in described particulate matter level.Described load can impose on described diesel engine by the speed changer that is connected on the described diesel engine.
[0007] a kind of vehicle comprises Eng ine Idling Control module, diesel particulate filter evaluation module and engine load control module.Described control module communicates with one another.Described Eng ine Idling Control module is with the diesel engine of idling conditions operation vehicle.Described diesel particulate filter evaluation module determines that the particulate matter of diesel particulate filter in the diesel engine exhaust flow path gathers level.Described engine load control module during described idling conditions optionally imposed load give described diesel engine, increasing the delivery temperature of diesel engine, thus diesel particulate filter regeneration.
[0008] further application area is apparent in the explanation that provides thus.To it will be appreciated that described explanation and concrete example just in order illustrating, and not plan to limit the scope of this disclosure.
Description of drawings
[0009] accompanying drawing described herein only is used to the purpose that illustrates, and never limits the scope of this disclosure.
[0010] Fig. 1 is the schematic representation according to the vehicle of this disclosure;
[0011] Fig. 2 is the control Block Diagram of control module shown in Figure 1; With
[0012] Fig. 3 shows the flow chart of the step of the vehicle that is used for control graph 1.
Embodiment
[0013] on the following illustrative in nature only for exemplary and do not plan to limit this disclosure, application or use.For the sake of clarity, corresponding in the accompanying drawings reference character is represented components identical.As used herein, term " module " refers to processor (share, special-purpose or group) and storage, the combinational logic circuit of ASIC (ASIC), electronic circuit, the one or more softwares of execution or firmware program and/or other suitable components of described function is provided.
[0014] referring to Fig. 1, vehicle 10 comprises engine pack 12, transmission assembly 14 and control module 16.Engine pack 12 comprises diesel engine 18, gas handling system 20, vent systems 22 and fuel system 24.Diesel engine 18 comprises the bent axle 26 that output torque is provided from it.Gas handling system 20 is communicated with diesel engine 18, and comprises intake manifold 28, closure 30 and electronic throttle controller (ETC) 32.ETC 32 activates closure 30 enters diesel engine 18 with control air mass flow.Vent systems 22 is communicated with diesel engine 18, and comprises gas exhaust manifold 34, catalyzer 36 and diesel particulate filter (DPF) 38.Fuel system 24 provides fuel to diesel engine 18.The exhaust gas that the air/fuel mixture burning produces leaves diesel engine 18 by vent systems 22.
[0015] transmission assembly 14 comprises speed changer 40 and Coupling device 42.Speed changer 40 can be automatic transmission, as can be from Indianapolis, and the Allison of IN
The M74 Automatic Transmission that obtains.Coupling device 42 is as general as the torque-converters form that comprises converter clutch (TCC) 48.TCC48 activated to provide joint between bent axle 26 and input shaft 44.Speed changer 40 optionally locks output shaft 46 and rotates to prevent it, thereby prevents that driving torque from passing to the wheel (not shown) of vehicle 10.
[0016] control module 16 is communicated by letter with engine pack 12, transmission assembly 14 and accelerator pedal 49.Referring to Fig. 2, control module 16 comprises Eng ine Idling Control module 50, engine load control module 52 and DPF evaluation module 55 in addition.Eng ine Idling Control module 50 and engine load control module 52 communicate with one another.Eng ine Idling Control module 50 is also communicated by letter with ETC32 with fuel system 24, enters the air mass flow and the fuel flow rate of diesel engine 18 with control.Eng ine Idling Control module 50 is communicated by letter with the accelerator pedal sensor 53 of accelerator pedal 49, and receives the signal of expression accelerator pedal position from it.Eng ine Idling Control module 50 is determined the service speed of motor 18 usually, and controls the operation of diesel engine 18 with idling conditions.
[0017] engine load control module 52 is also communicated by letter with speed changer 40, transmission fluid temperature transducer 54 and Coupling device 42.Engine load control module 52 is determined the operation gear of speed changer 40.Engine load control module 52 optionally locks the output shaft 46 of speed changer 40, and optionally activates TCC48 to provide load to diesel engine 18.Engine load control module 52 also is provided by the transmission fluid temperature that is provided by transmission fluid temperature transducer 54.
[0018] DPF evaluation module 55 is communicated by letter with engine load control module 52 with Eng ine Idling Control module 50.DPF evaluation module 55 determines that the soot of DPF38 gathers level.DPF evaluation module 55 is assessed determined soot with respect to preset limit value and is gathered level.
[0019], shows the control logic 100 of the DPF38 that is used to regenerate referring to Fig. 3.In the operation period of engine pack 12, DPF38 gathers the particulate matter (soot) that exists in the exhaust gas from diesel engine 18.When in DPF38, having gathered the particulate matter of prearranging quatity, DPF38 can regenerate (purification).DPF38 can be by purifying to be higher than predetermined temperature limit value (as the temperature greater than 500 ℃) operation DPF38.Thereby control logic 100 is wherein determined the particulate matter accumulated amount in DPF38 to determine square 102 beginnings.
[0020] determines that square 102 calculates the soot accumulated amount in the DPF38 in many ways, comprise the soot LOAD FOR and/or the algorithm of the fuel consumption of operating time based on diesel engine 18, distance that vehicle 10 is advanced and diesel engine 18.Control logic 100 advances to decision block 104 then, and wherein determined soot accumulated amount and preset limit value are relatively.Preset limit value provides DPF38 the threshold value that regeneration requires generally.
[0021] if determined soot accumulated amount less than preset limit value, control logic 100 finishes.If determined soot accumulated amount is more than or equal to preset limit value, control logic 100 advances to determines square 106, wherein determines the serviceability of vehicle 10.The serviceability of vehicle 10 determine to comprise individually or combination in any ground assessment accelerator pedal position, the operation gear of speed changer 40 and the service speed of vehicle 10.So control logic 100 advances to decision block 108, wherein the operating conditions of vehicle 10 is assessed with respect to preset limit value.
[0022] accelerator pedal position is assessed with respect to specified release position.The accelerator pedal position ordinary representation vehicle 10 that engages 0-0.5% with respect to specified release position is in reproduction condition.Replacedly or additionally, the parking of speed changer 40 or neutral gear operation gear ordinary representation vehicle 10 is in reproduction condition.Replacedly or additionally, the 0-0.5 km of vehicle 10/hour service speed ordinary representation vehicle 10 is in reproduction condition.In general, if diesel engine 18 is in idling conditions, vehicle 10 can be in reproduction condition.
[0023] if vehicle 10 is not in the reproduction condition of DPF38, control logic 100 finishes.If the serviceability of vehicle 10 is in the reproduction condition of DPF38, control logic 100 advances to control square 110, and wherein Eng ine Idling Control module 50 will wish that increase load conveys to engine load control module 52.After Eng ine Idling Control module 50 indication wished to increase load, control logic 100 advanced to decision block 112, and wherein whether engine load control module 52 assessment speed changers 40 can support the load request that increases.Whether speed changer 40 determining based on the existence of any operating trouble relevant with speed changer 40 and/or the operating temperature of speed changer 40, as the transmission fluid temperature that is provided by transmission fluid temperature transducer 54 of the load request that increases can be provided.
[0024] if speed changer 40 can support the load request that increases, control logic 100 to advance to control square 114, wherein DPF38 regeneration, as discussed below.If speed changer 40 can not support the load request that increases, control logic 100 to advance to control square 116, wherein speed changer 40 is cooled.Speed changer 40 cools off with waiting for predetermined amount of time by means of the idle speed that increases diesel engine 18.Through after the predetermined amount of time, control logic 100 advances to decision block 118, and wherein, whether engine load control module 52 is assessed speed changer 40 once more can support the load request that increases.If speed changer 40 still can not be supported the load request that increases, control logic 100 finishes.If speed changer 40 can support the load request that increases, control logic 100 to advance to control square 114, wherein DPF38 regeneration.
[0025] DPF38 regeneration comprises from transmission assembly 14 provides load to diesel engine 18.Load activates TCC48 simultaneously by means of the output shaft 46 that locks speed changer 40 and provides.The actuating of TCC48 is given diesel engine 18 at bent axle 26 place's imposed loads usually when output shaft 46 lockings, and vehicle 10 keeps static substantially simultaneously.The load that increases produces higher exhaust gas temperature, causes the higher temperature of DPF38.For example, the load of increase can increase to the temperature of DPF38 above 500 ℃.
[0026] except the increase engine load that is applied by transmission assembly 14, DPF38 regeneration can comprise a plurality of operating parameters of controlling engine pack 12.The control of the operating parameter of engine pack 12 comprises increases engine speed, increase each cylinder get angry incident fuel injection event number, delayed injection regularly, burner oil is in blast air and activate closure 30.
[0027] in addition, above stated specification only discloses and has described the one exemplary embodiment of this disclosure.According to such explanation and accompanying drawing and claims, those skilled in the art will recognize easily, can carry out various modifications, modification and variation, and not depart from the spirit and scope as this disclosure that limits in following claims.
Claims (20)
1. method comprises:
The vehicle that comprises diesel engine with the idling conditions operation; With
Imposed load is given described diesel engine during idling conditions, with delivery temperature with respect to specified idling conditions increase diesel engine, thus diesel particulate filter regeneration.
2. method according to claim 1 is characterized in that, described imposed load comprises that the speed changer by the described vehicle that is connected to described diesel engine applies described load to described diesel engine.
3. method according to claim 2 is characterized in that described speed changer comprises output shaft, and described imposed load comprises that the described output shaft of locking is to prevent its rotation.
4. method according to claim 3 is characterized in that described speed changer comprises converter clutch, and described imposed load is included in and activates described converter clutch when described output shaft locks.
5. method according to claim 4 is characterized in that, described imposed load comprises that the actuating by described converter clutch applies the bent axle that described load is given described diesel engine.
6. method according to claim 2 is characterized in that also comprising and determines whether described speed changer can apply described load during described idling conditions, carry out described imposed load when described speed changer can apply described load.
7. method according to claim 6 is characterized in that, describedly determines to comprise the operating temperature of assessing described speed changer.
8. method according to claim 1 is characterized in that also comprising the idle speed that increases described diesel engine with respect to the idle speed relevant with described specified idling conditions.
9. method according to claim 1 is characterized in that, described imposed load is included in during the described idling conditions described exhaust gas temperature with described diesel engine and increases to temperature greater than 500 ℃.
10. method according to claim 1 is characterized in that also comprising that the particulate matter of determining described diesel particulate filter gathers level, carries out described imposed load when described definite particulate matter gathers level greater than preset limit value.
11. a method comprises:
The vehicle that comprises diesel engine with the idling conditions operation;
Determine that the particulate matter in the diesel particulate filter gathers level in the exhaust gas flow path of described diesel engine; With
When described definite particulate matter gathers level greater than preset limit value, give described diesel engine by the speed changer imposed load that is connected on the described diesel engine, increasing the delivery temperature of described diesel engine, thereby regenerate described diesel particulate filter.
12. method according to claim 11 is characterized in that, described speed changer comprises output shaft, and described imposed load comprises that the described output shaft of locking is to prevent its rotation.
13. method according to claim 12 is characterized in that, described speed changer comprises converter clutch, and described imposed load is included in and activates described converter clutch when described output shaft locks.
14. method according to claim 13 is characterized in that, described imposed load comprises the bent axle of giving described diesel engine by the actuating imposed load of described converter clutch.
15. a control module comprises:
The Eng ine Idling Control module, described Eng ine Idling Control module is with the diesel engine of idling conditions operation vehicle;
The diesel particulate filter evaluation module, described diesel particulate filter evaluation module and described Eng ine Idling Control module communication gather level with the particulate matter of determining diesel particulate filter in the described diesel engine exhaust flow path; With
The engine load control module, described engine load control module is communicated by letter with described diesel particulate filter evaluation module with described Eng ine Idling Control module, with during described idling conditions optionally imposed load give described diesel engine, so that increase the delivery temperature of described diesel engine, thereby regenerate described diesel particulate filter.
16. control module according to claim 15 is characterized in that, described engine load control module applies described load to described diesel engine by the transmission for vehicles that is connected on the described diesel engine.
17. control module according to claim 16 is characterized in that, described engine load control module optionally locks the output shaft of described speed changer to apply described load.
18. control module according to claim 17 is characterized in that, described engine load control module activates converter clutch when described output shaft locks, to apply described load.
19. control module according to claim 18 is characterized in that, described engine load control module activates described converter clutch, gives the bent axle of described diesel engine to apply described load.
20. control module according to claim 15 is characterized in that, described engine load control module applies described load, with the described delivery temperature that the increases described diesel engine temperature at least 500 ℃.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/042559 | 2008-03-05 | ||
| US12/042,559 US8424293B2 (en) | 2007-07-18 | 2008-03-05 | Diesel particulate filter extended idle regeneration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101526023A true CN101526023A (en) | 2009-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810149765A Pending CN101526023A (en) | 2008-03-05 | 2008-09-25 | Diesel particulate filter extended idle regeneration |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146832A (en) * | 2011-03-17 | 2011-08-10 | 三一重机有限公司 | Method and device for controlling regeneration of postprocessing of construction machinery |
| CN102168621A (en) * | 2010-02-26 | 2011-08-31 | 通用汽车环球科技运作有限责任公司 | Method and system for controlling an engine during diesel particulate filter regeneration at idle conditions |
| CN102661188A (en) * | 2010-12-21 | 2012-09-12 | 通用汽车环球科技运作有限责任公司 | System and method for unloading hydrocarbon emissions from an exhaust after-treatment device |
| WO2013067802A1 (en) * | 2011-11-08 | 2013-05-16 | 湖南三一智能控制设备有限公司 | Intelligent post-treatment and regeneration control method for engineering machinery engine |
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| US5063736A (en) * | 1989-08-02 | 1991-11-12 | Cummins Engine Company, Inc. | Particulate filter trap load regeneration system |
| CN1423035A (en) * | 2001-11-28 | 2003-06-11 | 五十铃自动车株式会社 | Exhaust purifying system and regnerating control method |
| CN1740541A (en) * | 2004-06-25 | 2006-03-01 | 通用汽车公司 | Transmission control method for increasing engine idle temperature |
| US20070214772A1 (en) * | 2006-03-16 | 2007-09-20 | Cummins, Inc. | Increasing exhaust temperature for aftertreatment operation |
| US20070251220A1 (en) * | 2006-04-27 | 2007-11-01 | Kent Dawson | Brake Torque Load Generation Process for Diesel Particulate Filter Regeneration and SOx Removal from Lean NOx Trap |
| CN101089374A (en) * | 2006-06-15 | 2007-12-19 | 通用汽车环球科技运作公司 | Diesel exhaust system reversible particulate filter |
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2008
- 2008-09-25 CN CN200810149765A patent/CN101526023A/en active Pending
Patent Citations (6)
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| US5063736A (en) * | 1989-08-02 | 1991-11-12 | Cummins Engine Company, Inc. | Particulate filter trap load regeneration system |
| CN1423035A (en) * | 2001-11-28 | 2003-06-11 | 五十铃自动车株式会社 | Exhaust purifying system and regnerating control method |
| CN1740541A (en) * | 2004-06-25 | 2006-03-01 | 通用汽车公司 | Transmission control method for increasing engine idle temperature |
| US20070214772A1 (en) * | 2006-03-16 | 2007-09-20 | Cummins, Inc. | Increasing exhaust temperature for aftertreatment operation |
| US20070251220A1 (en) * | 2006-04-27 | 2007-11-01 | Kent Dawson | Brake Torque Load Generation Process for Diesel Particulate Filter Regeneration and SOx Removal from Lean NOx Trap |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168621A (en) * | 2010-02-26 | 2011-08-31 | 通用汽车环球科技运作有限责任公司 | Method and system for controlling an engine during diesel particulate filter regeneration at idle conditions |
| CN102168621B (en) * | 2010-02-26 | 2014-07-09 | 通用汽车环球科技运作有限责任公司 | Method and system for controlling an engine during diesel particulate filter regeneration at idle conditions |
| CN102661188A (en) * | 2010-12-21 | 2012-09-12 | 通用汽车环球科技运作有限责任公司 | System and method for unloading hydrocarbon emissions from an exhaust after-treatment device |
| CN102661188B (en) * | 2010-12-21 | 2015-02-18 | 通用汽车环球科技运作有限责任公司 | System and method for unloading hydrocarbon emissions from an exhaust after-treatment device |
| CN102146832A (en) * | 2011-03-17 | 2011-08-10 | 三一重机有限公司 | Method and device for controlling regeneration of postprocessing of construction machinery |
| WO2013067802A1 (en) * | 2011-11-08 | 2013-05-16 | 湖南三一智能控制设备有限公司 | Intelligent post-treatment and regeneration control method for engineering machinery engine |
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Application publication date: 20090909 |