CN102410064A - Particulate filter regeneration - Google Patents

Particulate filter regeneration Download PDF

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Publication number
CN102410064A
CN102410064A CN2011102824892A CN201110282489A CN102410064A CN 102410064 A CN102410064 A CN 102410064A CN 2011102824892 A CN2011102824892 A CN 2011102824892A CN 201110282489 A CN201110282489 A CN 201110282489A CN 102410064 A CN102410064 A CN 102410064A
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CN
China
Prior art keywords
cylinder
valve
combustion
group
power system
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.)
Pending
Application number
CN2011102824892A
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Chinese (zh)
Inventor
理查德·E·温泽
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.)
Deere and Co
Original Assignee
Deere and Co
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 Deere and Co filed Critical Deere and Co
Publication of CN102410064A publication Critical patent/CN102410064A/en
Pending legal-status Critical Current

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    • 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
    • F01N3/021—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 filters
    • F01N3/023—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 filters using means for regenerating the filters, e.g. by burning trapped particles
    • 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
    • F01N3/021—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 filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/008—Controlling each cylinder individually
    • F02D41/0082—Controlling each cylinder individually per groups or banks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
    • F02D41/029—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a particulate filter
    • 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
    • F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
    • F01N2430/02—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by cutting out a part of engine cylinders
    • 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
    • F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
    • F01N2430/06—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by varying fuel-air ratio, e.g. by enriching fuel-air mixture
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0002—Controlling intake air
    • F02D2041/0022—Controlling intake air for diesel engines by throttle control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/024—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus
    • F02D41/0245—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus by increasing temperature of the exhaust gas leaving the engine

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

A power system comprises an air breathing, fuel consuming internal combustion engine having a plurality of cylinders and producing a rotary output and products of combustion; an intake manifold receiving combustion air from a common inlet and distributing such air to the cylinders of the engine; a fuel system for delivering fuel at controlled rates to at least a group of cylinders less than the total of the cylinders; a particulate filter receiving products of combustion from the engine, the particulate filter requiring periodic regeneration.

Description

Particulate filter regeneration
Technical field
The present invention relates to internal-combustion engine, and more particularly, relate to and be used for making the regeneration system easily of the particulate filter that uses with this internal-combustion engine.
Background technique
For many years, to demand from strict all the time EPA restriction the having caused particulate filter that the particulate from internal combustion engine exhaust system is filtered of the products of combustion of internal-combustion engine.Though diesel powered system has adopted particulate filter for many years, i.e. diesel particulate filter (DPF), the direct fuel that is used for the internal-combustion engine of other type sprays and has also had the demand to particulate filter.These particulate filters have filter medium, and this filter medium is collected particulate to prevent that particle emission is in atmosphere on filter medium.The same as any filter, there is limited capacity in the particulate of being caught by filter, and exists the filter regeneration or the demand of burning particulate.
Usually, this regeneration requires through increasing hydrocarbon fuel or the intensification through other form comes elevated exhaust temperature.No matter making, which kind of the concrete mechanism of filter regeneration the delivery temperature that a large amount of systems are used to increase the load on the motor and therefore increase the particulate filter upper reaches has been proposed.This system can comprise through increasing restriction and handle waste gas, or comprises through the variable air inlet valve system or the variable turbine blade system (variable turbine geometry systems) of complicacy and handling flowing.Though these measures provide necessity of delivery temperature to increase, and have also increased the cost and the complexity of engine system simultaneously.
What therefore, need in the existing technology is the simplified system that increases delivery temperature for the regeneration purpose.
Summary of the invention
In one form, the present invention includes power system, it has the internal-combustion engine of air-inlet type consume fuel, and this internal-combustion engine has a plurality of cylinders and produces rotation output and products of combustion.The intake manifold receives from the combustion air of common inlet and it air distribution to cylinder is used for burning.Fuel system is used for controlled flow fuel being delivered at least one group of cylinder less than the sum of the cylinder that is used for this internal-combustion engine.Particulate filter receives the products of combustion from internal-combustion engine, and this particulate filter requires periodic regeneration.Valve is positioned among the intake manifold being limited to the combustion air flow of this at least one group of cylinder at least, and the fuel that said fuel system is reduced to this at least one group of cylinder basically with to the reduction of the air stream of this at least one group of cylinder the time at least flows.
Description of drawings
Through the description that next combines accompanying drawing to carry out with reference to embodiment of the present invention, above-mentioned and further feature and advantage of the present invention and realize that their mode will become more obvious, and will understand the present invention better, in the accompanying drawings:
Fig. 1 shows the schematic representation of practical implementation power system of the present invention;
Fig. 2 shows the power system with first kind of valve of Fig. 1; And
Fig. 3 shows the power system with second kind of valve of Fig. 1.
Reference character corresponding in whole accompanying drawing is represented corresponding components.The example view that proposes in this article one embodiment of the present invention, and this example is not will be interpreted as to limit scope of the present invention by any way.
Embodiment
Referring now to accompanying drawing, and more particularly with reference to Fig. 1, the power system with the multi-cylinder cylinder internal combustion engine 12 that comprises a plurality of cylinders 16 has been shown among the figure, the to-and-fro motion in cylinder of piston (not shown) is exported to produce rotating power via crankshaft 14.The air that is used to burn that motor 12 receives from intake manifold 18, intake manifold 18 comprises import 20 that is used for first group of cylinder and the import 22 that is used for second group of cylinder.As shown in the figure, motor 12 has 6 cylinders, and the quantity by cylinder in the cylinder group of air inlet runner (intake runner) 20 and 22 supplies is equal respectively.Yet, it will be appreciated by those skilled in the art that the quantity of every group of interior cylinder can change.
The cylinder of motor 12 receives fuel, as described in inciting somebody to action subsequently, and produces products of combustion, and products of combustion is transferred through outlet valve (not shown) and exhaust manifold 26, and is discharged into the import 28 of the turbine 30 that is used for turbosupercharger 32 therefrom.Therefore the waste gas from turbine 30 processes arrives exhaust aftertreatment device 36 through turbine outlet 34; Exhaust aftertreatment device 36 can be oxidation catalytic converter or particulate filter or the combination of the two, and waste gas passes through exhaust line 38 to environment from exhaust aftertreatment device 36.Exhaust aftertreatment device 36 is collected environmentally harmful particulate and must periodically be regenerated or particulate cleared up.
The air that is used to burn gets into power system via admission line 40 through suitable filtrating equipment, and is transported to the suction port of compressor 42, and compressor 42 is connected to turbine 30 by axle 44 and is driven by turbine 30 through axle 44.Flow to the import of aftercooler or interstage cooler 48 from the forced air of compressor 42 via pipeline 46, aftercooler or interstage cooler 48 are used to reduce the temperature of superheated steam, increase the air that consumed by motor 12 and the density of oxygen thus.Aftercooler or interstage cooler can be for multiple cooler (comprising that air to air-cooler that depends on the ambient air that is used for cooling off or the air that depends on the engine coolant that is used for application-specific are to liquid cooler) any.So the air of cooling gets into the admission line 24 that leads to intake manifold 18.
The power system of Fig. 1 comprises ERG or EGR; And this is realized by pipeline 50; Pipeline 50 inserts the part of exhaust manifold 26 or exhaust flow path and extends through cooler 52; Cooler 52 can be used for reducing the temperature of the waste gas that so is passed to the intake manifold, and therefore increases the efficient of motor 12.No matter whether waste gas cools off, and it all passes through EGR valve 54, the flow that EGR valve 54 is controlled through the pipeline 56 that is connected to the inlet line of leading to intake manifold 18.
Motor 12 has the combustion system that is schematically shown by reference character 58, and combustion system 58 receives the control input from the engine parameter sensor, and receives the primary input from electronic control unit 62 or ECU via circuit 60 or many circuits.ECU 62 preferably provides the control to the EGR valve through circuit 64, with the exhaust gas flow of control from the products of combustion of motor 12 to intake manifold 18.
According to the present invention, valve 66 is arranged in the intake manifold 18 and via circuit 68 and is controlled by ECU 62.Set up discharge relation between the air inlet runner 20 and 22 of valve 66 in intake manifold 18, with restriction at least optionally and also block the inlet stream that is supplied to cylinder 16 by air inlet runner 22.Basically when blocking or restriction is supplied to the air stream of cylinder group by air inlet runner 22, reduce or the fuel that stops being supplied to by fuel system 58 this group cylinder flows.In fact, this has eliminated the cylinder group of being supplied with air inlet by gas-entered passageway 22, produces ability with the power of removing them, and increases the load on the residue cylinder according to the parasitic load of entire engine and according to the additional parasitic load that is produced by the cylinder group of stopping using.
Valve 62 can take several forms, and in Fig. 2 and 3, illustrates some in them.Fig. 2 shows the valve 66 of butterfly valve 70 forms; Butterfly valve 70 is installed on the central pivot 72 and via the connection 68 to ECU62 and can in hemispherical cavity 74, pivots; To demonstrate flowing of along continuous straight runs had no restriction basically; As shown in Figure 2, perhaps on the vertical position, block to flow basically, as shown in Figure 2 and shown in dotted line.Butterfly valve has developed into and has utilized improved sealing the margin, can realize a large amount of reductions of flow, is supplied to flowing of cylinder group to eliminate by gas-entered passageway 22, and therefore increases the load on the motor 12.
Fig. 3 shows the valve 66 of another kind of form, in this situation, is the shutoff valve 80 of plate form, and shutoff valve 80 slides at the internal surface 82 that extends from intake manifold 18 of housing 84.Plate 80 is installed on the axle 86 and by axle 86 and guides; Axle 86 can connect via connection set 68, with plate 80 from wherein displaced to the wherein plate 80 shown in broken lines that has no restriction basically through flowing of intake manifold being seated in the depression 88 to block the position of flowing through intake manifold 18 basically.Though not shown, the connection set 68 that is used for two valves 70 and 80 generally comprises can be by the actuator (not shown) of ECU 62 controls.
Adopt the valve of two kinds of forms, and as tangible other valve for a person skilled in the art, will change to the degree that in the fuel stream of cylinder 16, can block combustion air flow basically interrupting by the flow that gas-entered passageway 22 is supplied to second group of cylinder.This applies the load of increase effectively on motor, particularly during not existing enough natural loads delivery temperature to be increased to the partial throttling situation of degree of the regeneration of being convenient to particulate filter 36 on the motor.In addition, flow through partly blocking, valve provides simple mode to be used for during little load condition, increasing delivery temperature, improves the operation of multiple exhaust aftertreatment device thus.
Though described the present invention, in the spirit and scope of present disclosure, can also revise the present invention with reference at least a mode of execution.Therefore, the application will adopt its universal principle to contain any distortion of the present invention, purposes or modification.In addition, the application will contain as in the common practise in field under the present invention or the common technology means scope and fall into the content that departs from present disclosure within the limited field of the claim of enclosing.

Claims (7)

1. power system comprises:
The internal-combustion engine of air-inlet type consume fuel has a plurality of cylinders and produces rotation output and products of combustion;
The intake manifold receives the cylinder that is dispensed to said internal-combustion engine from the combustion air of public suction port and with this combustion air;
Fuel system is used for controlled flow fuel being delivered at least one group of cylinder less than said cylinder sum;
Particulate filter receives the products of combustion from said internal-combustion engine, and said particulate filter requires periodic regeneration; With
Valve; Be positioned among the said intake manifold to be limited to the combustion air flow of said at least one group of cylinder at least; And said fuel system side by side is reduced to the fuel stream of said at least one group of cylinder basically at least, thereby increases load and the temperature of said exhaust flow on the said internal-combustion engine for the regeneration of said particulate filter.
2. power system according to claim 1, said valve is limited to the flow of said at least one group of cylinder fully.
3. power system according to claim 1, wherein said valve are butterfly valve.
4. power system according to claim 1, wherein said valve are shutoff valve, and this shutoff valve has and can be shifted to change and to be limited to the plate of the flow of said at least one group of cylinder.
5. power system according to claim 1 also comprises being connected to control and starting said valve and the electronic control unit (ECU) of said fuel stream.
6. power system according to claim 1, wherein said at least one group of cylinder constitute sum half the of the cylinder of said multi-cylinder engine.
7. power system according to claim 1, wherein said internal-combustion engine are compression ignition diesel engines, and wherein said filter is a diesel particulate filter.
CN2011102824892A 2010-09-22 2011-09-21 Particulate filter regeneration Pending CN102410064A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/888,043 US20120067032A1 (en) 2010-09-22 2010-09-22 Particulate filter regeneration
US12/888,043 2010-09-22

Publications (1)

Publication Number Publication Date
CN102410064A true CN102410064A (en) 2012-04-11

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US (1) US20120067032A1 (en)
EP (1) EP2434113A1 (en)
CN (1) CN102410064A (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134006A (en) * 1983-01-27 1984-08-08 Johnson Matthey Inc Regenerating a catalytic filter
US4471610A (en) * 1982-04-28 1984-09-18 Toyota Jidosha Kabushiki Kaisha Soot catcher purgative diesel engine intake throttle valve control method and apparatus with graduated homing performance
DE3817980A1 (en) * 1988-05-27 1989-11-30 Daimler Benz Ag Device for regenerating soot burn-off filters
US6273053B1 (en) * 2000-03-03 2001-08-14 Jkkb Holdings Corp. Engine shutdown valves
EP1795721A1 (en) * 2005-12-09 2007-06-13 Deere & Company Internal combustion engine and method of operating an internal combustion engine
CN101091038A (en) * 2005-02-28 2007-12-19 洋马株式会社 Exhaust emission control device and internal combustion engine equipped with the exhaust emission control device and particulate filter regenerating method
US20080072862A1 (en) * 2004-09-21 2008-03-27 Turner James William G Combustion Chamber Deactivation System
JP2009228602A (en) * 2008-03-24 2009-10-08 Yanmar Co Ltd Engine
US20100071656A1 (en) * 2008-09-25 2010-03-25 Gm Global Tchnology Operations, Inc. Valvetrain control strategies for exhaust aftertreatment devices

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4471610A (en) * 1982-04-28 1984-09-18 Toyota Jidosha Kabushiki Kaisha Soot catcher purgative diesel engine intake throttle valve control method and apparatus with graduated homing performance
GB2134006A (en) * 1983-01-27 1984-08-08 Johnson Matthey Inc Regenerating a catalytic filter
DE3817980A1 (en) * 1988-05-27 1989-11-30 Daimler Benz Ag Device for regenerating soot burn-off filters
US6273053B1 (en) * 2000-03-03 2001-08-14 Jkkb Holdings Corp. Engine shutdown valves
US20080072862A1 (en) * 2004-09-21 2008-03-27 Turner James William G Combustion Chamber Deactivation System
CN101091038A (en) * 2005-02-28 2007-12-19 洋马株式会社 Exhaust emission control device and internal combustion engine equipped with the exhaust emission control device and particulate filter regenerating method
EP1795721A1 (en) * 2005-12-09 2007-06-13 Deere & Company Internal combustion engine and method of operating an internal combustion engine
JP2009228602A (en) * 2008-03-24 2009-10-08 Yanmar Co Ltd Engine
US20100071656A1 (en) * 2008-09-25 2010-03-25 Gm Global Tchnology Operations, Inc. Valvetrain control strategies for exhaust aftertreatment devices

Also Published As

Publication number Publication date
EP2434113A1 (en) 2012-03-28
US20120067032A1 (en) 2012-03-22

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Application publication date: 20120411