CN1328481A - Catalyzed particulate oxidizer fo reducing particulate emissions from diesel engine and method - Google Patents

Catalyzed particulate oxidizer fo reducing particulate emissions from diesel engine and method Download PDF

Info

Publication number
CN1328481A
CN1328481A CN99813663A CN99813663A CN1328481A CN 1328481 A CN1328481 A CN 1328481A CN 99813663 A CN99813663 A CN 99813663A CN 99813663 A CN99813663 A CN 99813663A CN 1328481 A CN1328481 A CN 1328481A
Authority
CN
China
Prior art keywords
fuel
particulate
engine
waste gas
catalyzed
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
CN99813663A
Other languages
Chinese (zh)
Inventor
詹姆斯·M·瓦伦丁
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.)
Clean Diesel Technologies Inc
Original Assignee
Clean Diesel Technologies Inc
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 Clean Diesel Technologies Inc filed Critical Clean Diesel Technologies Inc
Publication of CN1328481A publication Critical patent/CN1328481A/en
Pending legal-status Critical Current

Links

Images

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
    • F01N3/02—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
    • F01N3/029—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 by adding non-fuel substances to exhaust
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • 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
    • F01N3/033—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 in combination with other devices
    • F01N3/035—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 in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • 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
    • F01N2250/00—Combinations of different methods of purification
    • F01N2250/02—Combinations of different methods of purification filtering and catalytic conversion

Abstract

Operation of a diesel engine with low particulate emissions is achieved through the use of a catalyzed particulate oxidizer (14) designed to cause a large number of impacts of particulates with catalyzed surfaces. The catalyzed particulate oxidizer (14) can be precatalyzed or uncatalyzed initially, but catalyzed during use by a catalyst fed prior to or after combustion in the engine. Preferably, the fuel will contain a catalytic additive (29), such as diphenyl cyclooctadiene platinum (II) or platinum acetylacetonate and/or a fuel soluble organo-metallic compound of cerium, iron, copper or manganese. Alternatively, the platinum group metal or other catalytic compound can be added to the exhaust or combustion air. The catalyzed particulate oxidizer has a plurality of parallel plates having catalyzed undulating surfaces provided to create a large number of contact points for the particulates in the exhaust gas.

Description

Be used to reduce the catalyzed particulate oxidizer and the method for diesel particulate emission
Technical field
The present invention relates to make the method for diesel engine with low particulate discharging valid function.
Particulate discharging for example especially from the PM10 and the PM2.5 of diesel engine, is thought health risk by many rules and regulations and health tissues.Existing many NO that is used to control xTechnology with the control diesel particulation is not lower than 0.1g/bhp-Hr yet have so far diesel particulate emission to be reduced to, and controls NO simultaneously xWith do not have service and integrity problem or need the technology of super-low sulfur (being lower than 50ppm) fuel.
Background technology
Diesel engine has the advantage in fuel economy, owing to this reason is well received.Yet, at the economic aspect of wishing completing combustion and a large amount of under these conditions NO that produces xExist between the discharging and accept or reject.In addition, at NO xAnd there is choice between particulate and hydrocarbon (HC) discharging.The particulate and/or the NO that do not have known made full use of diesel engine saving and do not increased xThe technology of the punishment of discharging.
Be used for reducing the NO of diesel engine when major measure (influencing the effect of combustion process itself) xThe time, saving of fuel descends usually, and the particulate discharging increases.On the other hand, select to reduce particle contamination and trend towards increasing NO with the burning condition that obtains the good fuel saving x
In the strategy of existing reduction NOx discharging, the measure that waste gas circulation (EGR) is seemingly good, but adopt it, except that saving of fuel, the increase of particulate will be the major technology challenge.As EGR, postpone (ITR) during spraymeter and also can be used for reducing NO x, but cause the fuel consumption that increases and increase the particulate discharging.
Because NO xAnd the intrinsic choice between the particulate, use diesel engine particle catcher become commonly used-reduce by one, another increase when taking action.From conceptive, the use trap can be as for example reducing NO by waste gas circulation, the adjustment of engine time or other known technology greatly xYet owing to fall engine efficiency loss when becoming too high at the pressure of trap, the capture of particulate becomes problem in the trap.In addition, can cause the physical damage of trap, need to use catalyst coat, fuel additive or supplemental heater,, also need to use low-sulphur fuel for most of catalysis systems to help regeneration by combustion particle regeneration trap.
Pressure by catalytic oxidizer falls lower, but these devices are not too effective aspect removing at particulate.In addition, these devices are best with the wetting time work of liquid hydrocarbon at particulate, for being used for NO having xThe particulate that this class that the engine of the waste gas circulation operation that reduces produces is done is not effectively worked.Usually, they only reduce solvable organic fraction (SOF) part, thereby only are limited to the decline of 10-50%.
Mixed type mechanism is open in the open WO97/232268 of the PCT of Van Hardeveld etc., the particle burning that this device catalysis is captured to guarantee, but adopt so-called turbulent flow settling vessel to capture, collect and burn particle collision is gone out exhaust gas stream.This will trend towards increasing pressure and fall, and be higher than particulate filter.Yet, capturing as catalysis, burning can not be carried out at low temperatures.When the generation particulate was lighted, it can cause the structural failure of device, and when the long-time low-load operation of engine, this problem is more serious.
All pre-catalytic units comprise that trap and another problem by oxidator are that they trend towards inactivation too promptly in the presence of sulphur.Because diesel fuel contains a large amount of sulphur, this will continue for diesel engine in the future is a problem.The US5501714 of Valentine and Peter-Hoblyn discloses this problem and can use by the catalytic oxidizer correction, but this does not solve the basic problem of above-mentioned technology.In addition, at Peter-Hoblyn, Valentine discloses the equalization point that independent platinum or platinum and cerium, copper or rail fuel additive can obviously reduce micro particle catching among the open WO97/04045 of the PCT of Sprague and Epperly.Yet low load condition still can not be sufficiently high to control back-pressure and avoid overheated in regenerative process.In addition, Jelles, Makkee, Moulijn, Acres and Peter-Hoblyn are at the 22nd CIMACCongress, in Copenhagen, Tuesday, on May 19th, 1998 report platinum/cerium fuel additive in conjunction with the catalytic ceramics filter at the cigarette ash of under lower temperature, removing high-load than independent catalytic filter or additive.Even this system has augmented performance at low temperatures, still there is intrinsic high back-pressure in filter, is being lower than not oxidation under about 350 ℃ temperature.
Prior art can not provide the proper method that solves the diesel particulation problem, especially for make the NOx discharging reduce to the engine of operating under the minimum condition at needs.Oxidator is not effectively removing aspect the particulate, because they mainly reduce SOF; And trap is being effectively aspect the collection particulate, but is having difficulties aspect regeneration and endurance issues and the high back-pressure interior.
Disclosure of an invention
An object of the present invention is to provide a kind of method and apparatus, it provides tangible particulate to reduce.
An object of the present invention is to provide a kind of method and apparatus, it provides significantly, and for a long time particulate reduces, and carries out with the maintenance cost of minimum.
Another object of the present invention provides a kind of method and apparatus, it can the optimum operation diesel engine to reduce particulate, for example be lower than 0.1g/bhp-Hr, and simultaneously by using engine to change, for example EGR and ITR handle NO xReduce.
Another object of the present invention provides a kind of method and apparatus, and it can reduce diesel particulation and NO simultaneously x
Another object of the present invention provides a kind of method and apparatus, and it has been got rid of usually and has removed efficient by the relevant difference of type catalytic oxidizer.
Another object of the present invention provides a kind of method and apparatus, and it has got rid of the saving of fuel bad result relevant with the diesel engine trap usually.
Of the present invention another and more specifically purpose provide a kind of method and apparatus, it provides significantly, for a long time particulate reduces, and for example is lower than 0.1g/bhp-Hr, and simultaneously by use waste gas circulation and/or ITR, handles NO xReduce.
These and other objects realize by the present invention, the invention provides the method and apparatus that improves that is used for low particulate emissions operation diesel engine.
Method of the present invention comprises: be equipped with catalyzed particulate oxidizer to diesel engine, this oxidator has inlet, outlet, the centre chamber that increases and a plurality of at this indoor parallel-plate, and the waveform surface that this plate is furnished with catalysis is used for a large amount of contact points of waste gas particulate with generation; Contain in generation under the condition of waste gas of particulate and operate diesel engine; With with the particulate oxidizer of waste gas by catalysis.
The also particulate oxidizer of claimed catalysis.
Preferred fuel contains the organic platinum group metal compounds that dissolves in fuel, for example contains to be selected from two or more the platinum group metal of mixture of platinum, palladium, rhodium and they.In another embodiment, effectively platinum group metal compounds can add in the waste gas before trap or combustion air.In other method, the combination of cerium, iron, copper, manganese or they and platinum reduces the particulate loading that engine is discharged before being used in oxidator, comprises the soluble of cigarette ash and carbon black part.The metal activation cigarette ash that generates also will promote the oxidation of improvement when contacting with catalytic surface.
Of the present invention another preferred aspect in, engine postpones during with waste gas circulation and/or spraymeter to operate.
Description of drawings
With reference to the accompanying drawings, will understand the present invention better by following detailed introduction, it is clearer that its advantage will become, wherein:
Fig. 1 is that the diesel engine that has the waste gas system that comprises catalyzed particulate oxidizer of the present invention illustrates.
Fig. 2 is illustrating of catalyzed particulate oxidizer of the present invention.
Fig. 3 is amplification, the profile of part catalyzed particulate oxidizer of the present invention.
Fig. 4 is with the diesel engine of waste gas circulation operation and illustrating of the waste gas system that comprises catalyzed particulate oxidizer of the present invention.
Detailed description of preferred embodiments
Term " diesel engine " is meant and comprises all compression-ignition engines that are used to move (comprising the sea) and static power set, is the two intermediate ranges of every circulation, every circulation four intermediate ranges and rotation type.
Term " hydrocarbon fuel " is meant all liq and the gaseous fuel that comprises by " distillate fuel " or " oil " preparation.Term " distillate fuel " is meant those products by distillation oil or petroleum distillate and residue preparation.Term " oil " is meant and is usually included in all substances that not considering in this term implication originated under normal conditions, comprises the hydrocarbon materials by the fossil fuel recovery of not considering viscosity.
Term " diesel fuel " comprises " distillate fuel ", it comprises that satisfying ASTM is not the material of being made up of distillation fully about the diesel fuel of diesel fuel definition or other, can contain (for example methyl alcohol, ethanol, ether, methyl ethyl ether, nitromethanes) such as alcohol, ether, organic nitro-compounds.Also comprise by plant or mineral source, for example the emulsion and the liquid fuel that obtain of corn, clover, shale and coal.These fuel can contain other additive well known by persons skilled in the art, comprise dyestuff, hexadecane improver, antioxidant, for example 2,6-di-tert-butyl-4-methy phenol, corrosion inhibitor, antirust agent, for example alkylated succinic acid and acid anhydride, bactericide, gum inhibitor, metal inactivator, upper cylinder lubrication agent, antifreezing agent etc.
With reference to figure 1, diesel engine 10 is supplied with fuel by oil tank 11, and fuel is preferably with platinum group metal compounds or one or more other catalyst compounds, for example cerium, iron or manganese catalysis, and these latter's material can use or use with platinum metal catalysts individually.
The waste gas of engine will be by flue gas leading 12, the catalytic metal that has by cerium and the fuel additive carbon monoxide-olefin polymeric release that preferably also has platinum enters catalyzed particulate oxidizer (CPO) 14, and CPO can be by installation or the catalysis with platinum group metal fuel additive operating engine formation catalyst deposit.
The longitudinal cross-section of CPO of the present invention is illustrated in the accompanying drawing 2.Shown CPO14 comprises inlet 16, outlet 18 and the centre chamber 20 that increases.A plurality of substantially parallel plates 22 are arranged in chamber 20, and this plate has surface catalysis, corrugated to produce a large amount of contact points of the particulate in the waste gas, and described waste gas enters by 16, discharges by 18.Plate is preferably made by pottery or silica-alumina mixture, and for example cordierite, carborundum, glass or metallic fiber, cellular glass or metal matrix etc. or suitable metal for example are used for that class alloy of management of vehicle exhaust systems.Wherein appropriate catalyst is the material that becomes known for catalyzed trap and pass through the type oxidator, and wherein remarkable is the platinum group metal, for example platinum, palladium and rhodium.Oxidator can or need not need wash coat with the alumina washcoat precoating high surface to be provided, to an advantage of the invention is before catalysis.
Fig. 3 diagram shows the dynamics of the CPO of part amplification with declarative procedure.Passage 24 forms between independent plate 22, enough wide of passage to allow waste gas to pass through, and minimum falls in pressure.The definite structure of passage will and be made variable according to many designs and change.Peak 26 that forms in thin plate and paddy 28 cause gas frequently to change direction, even very little particulate has quality, and the conduit wall that this causes their crash panels to form, gas is turned according to the waveform in the plate easily.Do not collect particulate, but by clashing into to the small part particulate oxidized with the catalytic surface of plate continually.Waveform in the accompanying drawing is a V-shape, but also can adopt other suitable shape, comprises sinusoidal sample, flat-top V-shape etc.In certain embodiments, need be along the length direction of chamber installing plate partly.For example, plate can be assembled into the 2-5 part, the cross section of each filled chamber, but only extend the part of its length, in this case, less than 5 inches, for example the space of 0.25-3 inch separates these parts by preferably.
As mentioned above, fuel preferably also contains the organic platinum group metal compounds that dissolves in fuel, for example platinum, palladium or rhodium.Wherein platinum group metal compounds is selected from platinum acetylacetonate and has general formula X PtR 1R 2Compound, wherein X contains the ligand that at least one has the unsaturated carbon-carbon bond of alkene, alkynes or aromatic hydrocarbons π key configuration, R 1And R 2Be respectively benzyl, phenyl, nitrobenzyl or the alkyl that contains 1-10 carbon atom, diphenyl cyclooctadiene platinum (II) for example.
Suitable platinum group metal compounds is at US4893562 and 4891050, the Epperly of for example Bowers and Sprague and US5034020, the Epperly of Sprague, Sprague, the US5215652 of Kelso and Bower and Peter-Hoblyn, Epperly, Sprague, the US5266083 of Kelso and Bowers, Epperly, Sprague, the WO90/07561 of Kelso and Bower, Peter-Hoblyn, open among the US patent application No.08/597515 that Valentine and Sprague1996 applied at January 31, classify this paper list of references as.When allow using, can use the mixture of these compounds and one or more other platinum group metal compounds, for example soap, acetylacetone,2,4-pentanedione acid esters, alcoholate, beta-diketon hydrochlorate and sulfonate for example hereinafter will be described the compound of type in detail.
The platinum group metal compounds that is suitable as the contained additive of fuel or coal gas and/or other catalyst additive material can the effective any method of its required purposes add, for example be added in the fuel in the big capacity reservoir, join with oil tank that engine links to each other in fuel in or adopt continuously or intermittently and add, for example by suitable metering device, for example 27 of the oil tank 29 in the accompanying drawing 1 enter in the fuel return pipe of the cartridge of engine or engine, or with steam, gas or smog form add air inlet pipe, waste gas before CPO, after the CPO but be circulated in the waste gas before the engine or the waste gas mixing chamber that mixes with air inlet or install on an equal basis therein.
If use, platinum group metal catalyst compositions preferably is lower than by weight the concentration of 1 part of platinum group metal (ppm) with per 1,000,000 parts of fuel by volume and uses.When being used for the uncatalyzed CPO of catalysis (or CPO of the inactivation that become), can be higher dosage, 1-25 (or bigger) ppm for example is to carry out the fast deposition of catalyst in CPO.In this invention, all " ppm " numerals are based on weight with respect to volume reference, promptly restrain/hundred ten thousand cubic centimetres (can also be expressed as mg/l), and percentage is to provide by weight, except as otherwise noted.Cocatalyst (so address is because they preferably use with platinum group metal compositions, but can not use) to use for the effective content of its required purposes, is preferably the 1-200ppm of employed fuel, for example 5-60ppm.
Wherein the auxiliary catalysis material is the organic metal salt of manganese, magnesium, calcium, iron, copper, cerium, sodium, lithium and potassium, it can be suitable content use, the about 100ppm of for example about 1-, the catalyst metals of preferred 20-60ppm mixes with the platinum metal catalysts in the diesel fuel.It is alcoholate, sulfonate, beta-diketon hydrochlorate and the soap salt of copper, calcium, magnesium, manganese, iron, cerium, sodium, lithium and potassium compound that wherein known conduct dissolves in fuel and useful fuel additive, for example is selected from the mixture of stearate, palmitate, laruate, soap, naphthenate (napthanate), other fatty acid soaps and two or more materials.
Wherein preferred cerium compound is: acetopyruvic acid cerium III and various cerium soap salt, for example cerium naphthenate III, cerium octoate, cerium stearate, neodecanoate etc.Many cerium compounds are to satisfy formula: Ce (OOCR) 3Trivalent iron compound, R=alkyl wherein, preferred C 2-C 22, comprise aliphatic series, alicyclic, aryl and alkylaryl.Consumption is per about 1-100ppm ceriums of 1,000,000 parts of fuel (mg/l), and preferably about 5-30ppm preferably is lower than 20ppm.The cerium that is used in combination by particle trapper in this content and the prior art and the content that adopts is usually compared obvious reduction with platinum catalysis.Can list other representational cocatalyst composition in detail with reference to above-mentioned WO97/04045, classify this paper list of references as.
Fig. 4 diagram shows the diesel engine 10 and the waste gas system that comprises catalyzed particulate oxidizer 14 of the present invention with the waste gas circulation operation.In the EGR operating process, mix from the combustion air (with high or low pressure, heating or cooling) of inlet 13 with from the waste gas (telling) of pipeline 32, in one or more cylinders of input engine 10 (for example diesel oil or poor burns gasoline) by main exhaust gas stream 34.Compare with the combustion air that does not contain waste gas, be recycled to the waste gas ratio that engine is used to form the combustion air mixture and will effectively reduce the NO that the combustion air mixture is produced by engine x, common about 0-about 30% capable of circulation.
The combustion air mixture was compressed before introducing engine cylinder usually, and they are further compressed to produce heating in cylinder.Suitable fuel is injected into after compression in the cylinder, and burning produces waste gas with the combustion air mixture burns subsequently, and it is discharged by exhaust gas stream 34.When engine moves in the EGR mode continuously, repeat the above-mentioned cycle continuously.EGR reduces ignition temperature and carries out the oxygen of combustion chamber, has reduced the NO that is produced xAmount, but as observed, it has increased the generation of particulate and unburned hydrocarbon-be NO equally xAnd the compromise between the completing combustion.
In the downstream of exhaust gas stream 34 are CPO unit 14, and according to catalyst, CPO is effective in about 150-650 ℃ temperature range.In the engine operation process, temperature rises, and EGT remains in the most preferably temperature of CPO.Under this temperature, EGR realizes NO xConversion, thereby egr system operation, under the other situation, ITR can use separately or be used in combination to reduce NO with EGR x
Accompanying drawing 4 also illustrates one type the control system that is used to keep EGR and CPO unit proper operation.As required, controller 36 can measure many parameters any one reduce and particulate oxide to guarantee optimum N Ox.EGT (sensor 38) is one of important parameter, and the engine load is another key parameter (sensor 40), and this kind or similar factor can be monitored the NO that produces to determine xQuantity and change (not shown) by EGR or engine time and reduce NO xNeeds.
Checkout gear is used to detect the operating parameter of the condition for validity of indicating the NOx reduction, and its detects appropriate operational parameters and produces the operation signal of representing them.Controller 36 be provided for more one or more operation signals to the control device of suitable reference value and determine whether that NOx reduces can valid function.Controller produces the control signal of representing comparative result subsequently.Provide the device that is called controller equally with responsive control signal operation EGR unit (and/or the engine time changes), as the representative of these devices, accompanying drawing 1 shows valve 42.
EGR unit and/or engine time are regulated and can control in response to feedforward controller, described feedforward controller is in response to many measurement parameters, comprise: the engine load, represent by various machineries or electronic surveying result, for example fuel flow rate, adhesion (tack) or pulse width, engine speed, intake air temperature, air pressure, intake air humidity, EGT and/or for effective other parameter of concrete engine, in addition, according to obtainable sensor, based on the residual gas kind after the CPO, for example NO x, HC or CO content fine setting or FEEDBACK CONTROL can be provided.If desired, in response to concrete gaseous species or any other measurable engine or exhaust gas properties, can adopt the FEEDBACK CONTROL micro-tensioning system.
Foregoing description is used for how implementing the present invention to those skilled in the art's instruction, is not to be used for describing in detail all different improvement and variations, and after reading this description, they are tangible for those of skill in the art.Yet we plan all improvement and variation are comprised in the scope of the present invention of definition in the following claims.

Claims (12)

1. method with low particulate emissions operation diesel engine comprises:
Be equipped with catalyzed particulate oxidizer to diesel engine, have the centre chamber of inlet, outlet, increase and a plurality of at indoor parallel-plate, the waveform surface that the catalysis that is provided is provided this plate is used for a large amount of contact points of waste gas particulate with generation;
Contain in generation under the condition of waste gas of particulate by combustion fuel operating diesel machine; With with the particulate oxidizer of waste gas by catalysis.
2. the process of claim 1 wherein that fuel contains the organic platinum group metal compounds that dissolves in fuel.
3. the process of claim 1 wherein that fuel contains the organo-metallic compound that dissolves in fuel of cerium, iron, copper or manganese.
4. the process of claim 1 wherein that fuel contains organic platinum group metal compounds that dissolves in fuel and the organo-metallic compound that dissolves in fuel that contains cerium, iron, copper or manganese.
5. the method for claim 2, the organic platinum group metal compounds that wherein dissolves in fuel is to be selected from platinum acetylacetonate, palladium or rhodium and to have general formula X PtR 1R 2Compound a kind of, wherein X contains the ligand that at least one has the unsaturated carbon-carbon bond of alkene, acetylene or aromatics π key configuration, R 1And R 2Be respectively benzyl, phenyl, nitrobenzyl or the alkyl that contains 1-10 carbon atom, diphenyl cyclooctadiene platinum (II) for example.
6. the process of claim 1 wherein that platinum compounds adds in waste gas or the combustion air.
7. the process of claim 1 wherein that the particulate oxidizer of catalysis is with the pre-catalysis of platinum.
8. the process of claim 1 wherein that catalyzed particulate oxidizer is by the catalysis with the platinum group metal deposition of the additive of fuel mix.
9. the process of claim 1 wherein that engine operates to reduce NO with waste gas circulation x
10. the process of claim 1 wherein that engine postpones to operate to reduce NO with the engine timing x
11. the process of claim 1 wherein that engine postpones to operate to reduce NO with waste gas circulation and/or engine timing x
12. a catalyzed particulate oxidizer has inlet, outlet, the centre chamber that increases and a plurality of at indoor parallel-plate, the waveform surface that the catalysis that is provided is provided this plate is used for a large amount of contact points of waste gas particulate with generation.
CN99813663A 1998-11-24 1999-11-23 Catalyzed particulate oxidizer fo reducing particulate emissions from diesel engine and method Pending CN1328481A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11014898P 1998-11-24 1998-11-24
US60/110,148 1998-11-24

Publications (1)

Publication Number Publication Date
CN1328481A true CN1328481A (en) 2001-12-26

Family

ID=22331465

Family Applications (1)

Application Number Title Priority Date Filing Date
CN99813663A Pending CN1328481A (en) 1998-11-24 1999-11-23 Catalyzed particulate oxidizer fo reducing particulate emissions from diesel engine and method

Country Status (7)

Country Link
EP (1) EP1163043A4 (en)
JP (1) JP2002530578A (en)
CN (1) CN1328481A (en)
AU (1) AU1632900A (en)
CA (1) CA2349846A1 (en)
HK (1) HK1042266A1 (en)
WO (1) WO2000030739A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1629468B (en) * 2003-10-02 2010-04-21 雅富顿公司 Method of enhancing the operation of diesel fuel combustion systems
CN101469627B (en) * 2007-12-25 2011-11-16 三菱自动车工业株式会社 Emission control system
CN106246298A (en) * 2015-06-15 2016-12-21 福特环球技术公司 For reducing the system and method for particulate emissions

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050160724A1 (en) * 2002-02-04 2005-07-28 Valentine James M. Reduced-emissions combustion utilizing multiple-component metallic combustion catalyst and lightly catalyzed diesel oxidation catalyst
US20050164139A1 (en) * 2002-02-04 2005-07-28 Valentine James M. Reduced-emissions combustion utilizing multiple-component metallic combustion catalyst and lightly catalyzed diesel particulate filter
US20040074140A1 (en) * 2002-10-16 2004-04-22 Guinther Gregory H. Method of enhancing the operation of a diesel fuel combustion after treatment system
US6892531B2 (en) * 2003-04-02 2005-05-17 Julius J. Rim System for and methods of operating diesel engines to reduce harmful exhaust emissions and to improve engine lubrication
US9511353B2 (en) 2013-03-15 2016-12-06 Clean Diesel Technologies, Inc. (Cdti) Firing (calcination) process and method related to metallic substrates coated with ZPGM catalyst
US9511355B2 (en) 2013-11-26 2016-12-06 Clean Diesel Technologies, Inc. (Cdti) System and methods for using synergized PGM as a three-way catalyst
US9511350B2 (en) 2013-05-10 2016-12-06 Clean Diesel Technologies, Inc. (Cdti) ZPGM Diesel Oxidation Catalysts and methods of making and using same
US9771534B2 (en) 2013-06-06 2017-09-26 Clean Diesel Technologies, Inc. (Cdti) Diesel exhaust treatment systems and methods
US9545626B2 (en) 2013-07-12 2017-01-17 Clean Diesel Technologies, Inc. Optimization of Zero-PGM washcoat and overcoat loadings on metallic substrate
US9511358B2 (en) 2013-11-26 2016-12-06 Clean Diesel Technologies, Inc. Spinel compositions and applications thereof
US9475004B2 (en) 2014-06-06 2016-10-25 Clean Diesel Technologies, Inc. Rhodium-iron catalysts
US9731279B2 (en) 2014-10-30 2017-08-15 Clean Diesel Technologies, Inc. Thermal stability of copper-manganese spinel as Zero PGM catalyst for TWC application
US9700841B2 (en) 2015-03-13 2017-07-11 Byd Company Limited Synergized PGM close-coupled catalysts for TWC applications
US9951706B2 (en) 2015-04-21 2018-04-24 Clean Diesel Technologies, Inc. Calibration strategies to improve spinel mixed metal oxides catalytic converters
US10533472B2 (en) 2016-05-12 2020-01-14 Cdti Advanced Materials, Inc. Application of synergized-PGM with ultra-low PGM loadings as close-coupled three-way catalysts for internal combustion engines
US9861964B1 (en) 2016-12-13 2018-01-09 Clean Diesel Technologies, Inc. Enhanced catalytic activity at the stoichiometric condition of zero-PGM catalysts for TWC applications
US10265684B2 (en) 2017-05-04 2019-04-23 Cdti Advanced Materials, Inc. Highly active and thermally stable coated gasoline particulate filters

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4891050A (en) * 1985-11-08 1990-01-02 Fuel Tech, Inc. Gasoline additives and gasoline containing soluble platinum group metal compounds and use in internal combustion engines
US4725411A (en) * 1985-11-12 1988-02-16 W. R. Grace & Co. Device for physical and/or chemical treatment of fluids
US4869738A (en) * 1987-08-26 1989-09-26 W. R. Grace & Co.-Conn. Particulate trap
US4942020A (en) * 1988-06-27 1990-07-17 W.R. Grace & Co.-Conn. Converter for removing pollutants from a gas stream
US5501714A (en) * 1988-12-28 1996-03-26 Platinum Plus, Inc. Operation of diesel engines with reduced particulate emission by utilization of platinum group metal fuel additive and pass-through catalytic oxidizer
JPH0440240A (en) * 1990-06-05 1992-02-10 Nissan Motor Co Ltd Metal honeycomb catalyst
JPH04110022A (en) * 1990-08-30 1992-04-10 Sakai Chem Ind Co Ltd Particulate oxidation catalyst filter
AU6548996A (en) * 1995-07-18 1997-02-18 Clean Diesel Technologies, Inc. Methods for reducing harmful emissions from a diesel engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1629468B (en) * 2003-10-02 2010-04-21 雅富顿公司 Method of enhancing the operation of diesel fuel combustion systems
CN101469627B (en) * 2007-12-25 2011-11-16 三菱自动车工业株式会社 Emission control system
CN106246298A (en) * 2015-06-15 2016-12-21 福特环球技术公司 For reducing the system and method for particulate emissions
CN106246298B (en) * 2015-06-15 2020-12-18 福特环球技术公司 System and method for reducing particulate matter emissions

Also Published As

Publication number Publication date
WO2000030739A1 (en) 2000-06-02
HK1042266A1 (en) 2002-08-09
AU1632900A (en) 2000-06-13
JP2002530578A (en) 2002-09-17
CA2349846A1 (en) 2000-06-02
EP1163043A4 (en) 2003-02-12
EP1163043A1 (en) 2001-12-19

Similar Documents

Publication Publication Date Title
CN1328481A (en) Catalyzed particulate oxidizer fo reducing particulate emissions from diesel engine and method
CN100351502C (en) Method for reducing emissions from a diesel engine
JP5204737B2 (en) Control method for diesel engine with common rail injection system during regeneration of particulate filter
US20070220873A1 (en) Process for the catalytic control of radial reaction
CN1381302A (en) Protection agent composition and method for fuel-lean discharge system
CN1813120A (en) Method for regenerating a particle trap
CN1467267A (en) Aqueous additives in hydrocarbonaceous fuel combustion systems
CN1755069A (en) Crankcase ventilation system
EP0854903A1 (en) Methods for reducing harmful emissions from a diesel engine
WO2008036431A2 (en) Method and apparatus for filtration of a two-stroke engine exhaust
JP2004162697A (en) Emission control system for diesel fuel combustion after treatment system
CN101512132A (en) Power source thermal management and emissions reduction system
KR101231132B1 (en) Exhaust Gas Reducing Device for Vehicles with Burner to Improve Purification Performance
CN101878355A (en) Methods for reducing emissions from diesel engines
JP2004138050A (en) Method for reducing oxidation of soot and ash accumulation in diesel fuel combustion after-treatment system
CN1279150C (en) Method for increasing working efficiency of diesel fuel combustion treatment system
CN114317045B (en) Regeneration additive for diesel vehicle particle catcher and preparation method and application thereof
CN1279148C (en) Ultra-low sulfur fuel compositions containing organometallic additives
JP4477267B2 (en) Diesel engine diesel oil composition for DPF
CN113293039A (en) Anti-haze treatment agent for reducing soot emission of internal combustion engine and preparation method thereof
MXPA01005161A (en) Catalyzed particulate oxidizer for reducing particulate emissions from a diesel engine and method
KR20110003098A (en) Apparatus for decreasing exhaust gas and method for decreasing exhaust gas
CN101725421A (en) Operation method of direct injection type explosive motor with at least one exhaust post processing system
Pattas et al. Comparative Assessment of DPFs of Different Materials: A Case Study on a Euro I Light Duty Truck
Dittler DEVELOPMENT HISTORY AND SYSTEM INTEGRATION ASPECTS OF DIESEL PARTICLE FILTERS IN COMMERCIAL VEHICLES

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication
REG Reference to a national code

Ref country code: HK

Ref legal event code: WD

Ref document number: 1042266

Country of ref document: HK