Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
  • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
  • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
  • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
  • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
  • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
  • F01N3/2066—Selective catalytic reduction [SCR]
• • 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
  • F01N2610/00—Adding substances to exhaust gases
  • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
• • 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
  • F01N2610/00—Adding substances to exhaust gases
  • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
  • F01N2610/1406—Storage means for substances, e.g. tanks or reservoirs
• • 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
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T137/00—Fluid handling
  • Y10T137/8593—Systems
  • Y10T137/86381—Head-establishing standpipe or expansion chamber [e.g., surge tanks]

Definitions

• the present invention relates to a protecting device according to the preamble to patent claim 1, a reservoir according to patent claim 22 and a vehicle according to patent claim 23.
• liquids used for different functions of the vehicle.
• these liquids and reservoirs are used at temperatures which are so low that the liquid passes wholly or partially into frozen form.
• the present invention can be utilized for various reservoirs for vehicle applications, but the following description will discuss specifically, for illuminating but non- limiting purposes, how the invention can be used together with a reservoir intended for urea.
• One way of meeting the increasingly strict requirements for cleaning of exhaust gases deriving from internal combustion engines is to convert the exhaust gases into safe or less harmful gases by injecting urea into the exhaust gases. This can reduce, above all, the nitrogen oxides NO x content, which can help to reduce the emissions of harmful substances into the environment.
• urea a continuous supply of urea whilst the internal combustion engine is running, which means that a vehicle, such as, for example, a truck, which shall utilize the cleaning technology in question is equipped with a reservoir for urea. From the reservoir, urea can then be delivered for cleaning of the exhaust gases .
• urea can freeze in the reservoir. If urea freezes in the reservoir, it can mean, in turn, that the reservoir or other equipment disposed inside the reservoir, such as, for example, warming members for warming the urea, is damaged by the frozen matter through collision with the latter and/or through abrasion between the frozen matter and the reservoir and/or equipment disposed inside the reservoir.
• the problem is especially marked when the frozen matter re-thaws, since, as the frozen matter melts, loose lumps or blocks of frozen matter can be formed/released in the reservoir. Since the matter very often thaws from and into the matter, a large lump of frozen material ends up moving around in the reservoir when the matter thaws.
• One object of the invention is to provide a protecting device for reservoirs in vehicle applications, which device, in the use of a reservoir containing a medium in frozen form, is capable of deterring against damage to the reservoir or to equipment disposed inside the reservoir.
• the device comprises a means disposed inside the reservoir, in the form of at least one solid body, for deterring relative movement, given the presence of said medium in frozen form in the reservoir, between said frozen medium and the reservoir during transport of the vehicle, means that damage to the reservoir, arising from the effect of frozen matter, can be considerably reduced.
• fig. 1 is a perspective view illustrating a mechanism for cleaning exhaust gases deriving from an internal combustion engine by the admixture of a medium, which mechanism includes a device according to the invention for protecting a reservoir containing said medium,
• fig. 2a illustrates a protecting means according to the invention which has grid sections
• fig. 2b illustrates a variant of a protecting means according to the invention which has a three- dimensional grid
• fig. 3a illustrates a further variant of a protecting means according to the invention which has a hollow structure
• fig. 3b illustrates a variant of the protecting means according to the invention in fig. 3a
• fig. 4 illustrates a further variant of a protecting means according to the invention having elongated elements
• fig. 5 illustrates a further variant of a protecting means according to the invention in the form of a resilient layer disposed on the inner side of the reservoir
• fig. 6 illustrates a further variant of a protecting means according to the invention in the form of a counter-stay disposed inside the reservoir.
• Figure 1 illustrates in perspective view a mechanism for cleaning exhaust gases from an internal combustion engine (not shown) of a vehicle 1 by the admixture of a medium.
• a reservoir 2 for said medium such as, for example, urea, is disposed on the vehicle so as to deliver said medium to a combined muffler and catalyzer 3 connected to the internal combustion engine.
• the reservoir 2, which expediently is fastened to the chassis 1 of an engine-driven vehicle, can also be provided with a member 4 for warming said first medium present in the reservoir.
• a warming member 4 can be used to thaw matter which has frozen in the reservoir 2.
• the reservoir 2 may, of course, be placed on a vehicle unit which does not have an engine.
• the protecting device according to the invention is utilized in connection with exhaust-gas cleaning, the reservoir 2 is disposed, however, on an engine-driven vehicle or on a vehicle unit which is linked with another vehicle unit provided with an engine.
• the medium which is added for cleaning of the exhaust gases can have differing chemical composition.
• Said medium can be urea, for example, or a solution consisting of or containing urea (CO[NH 2 ] 2 +H 2 0) .
• Urea can be used to reduce the presence of nitrogen oxides NO x in the exhaust gases deriving from the internal combustion engine of the vehicle.
• the protecting device comprises a means 5 disposed inside the reservoir 2, in the form of at least one solid body, for deterring relative movement, given the presence of said medium in frozen form in the reservoir 2, between said frozen medium and the reservoir 2 during transport of the vehicle 1.
• said means 5 has at least one position 6, preferably a plurality of positions 6, for the freezing of said medium to said at least one position or to the positions 6.
• Said means 5, hereinafter referred to as the protecting means 5, can be, for example, a network or a grid 7 onto which said medium can freeze. In this way, freezing and/or thawing of the urea can be controlled, at the same time as the reservoir 2 can be protected against the effect of frozen matter in the reservoir 2.
• the frozen matter is deterred from colliding with the walls of the reservoir, which might otherwise occur owing to frozen matter in lump form swishing around in the non-frozen liquid in the reservoir 2 during displacement of the reservoir 2.
• the protecting means 5 will probably also be able to cause this thawing to occur without sizeable loose lumps or blocks of frozen matter being released and adversely affecting the reservoir 2.
• FIG 2a shows an embodiment in which a plurality of grid sections 7a, 7b, 7c, 7d are utilized to protect the reservoir.
• every second grid section is illustrated diagrammatically with dash- dot lines.
• one or more grid sections 7a, 7b, 7c, 7d of different size and shape can be disposed within the volume of the reservoir 2 in order to create the protecting means 5.
• a plurality of grid sections can be disposed essentially parallel to one another and at a mutual distance apart to produce the protecting means 5.
• the protecting means 5 can therefore be formed by means of one or more two- dimensional grids, but it can also be an integrated, three-dimensional grid or network structure 8 as illustrated in figure 2b.
• two-dimensional and three- dimensional is here meant that the grid 7 has the openings disposed in one and the same plane 7b and disposed in at least two different planes 8, respectively.
• the reservoir 2 can be of any chosen shape and size and the protecting means 5 configured accordingly.
• the outer contour of the protecting means 5 can be matched to the inner limit surface of the reservoir so that the protecting means, even though it is disposed loose inside the reservoir, is essentially detained in its position by the walls of the reservoir.
• the protecting means 5 can be fastened in the reservoir 2 in order, in respect of at least one position, to fix the protecting means 5 in relation to the reservoir 2.
• the protecting means 5 is advantageously configured such that and made of such a material having a flexibility such that, when the protecting means 5 is subjected to load as a result of the inertia of the matter frozen to the protecting means and the movement of the vehicle, the protecting means 5 can move in relation to the reservoir by flexing of the protecting means.
• the protecting means 5 can be made of a material with relatively high elasticity, and/or dimensioned, to allow this flexing in relation to the reservoir.
• the movement of one or more lumps which are frozen to the protecting means can thereby be gently and sensitively dampened, whilst unwelcome collisions between these lumps and the walls of the reservoir are prevented, or at least deterred, or only occur at a lower speed than would be the case without said protecting means .
• FIGS 3a and 3b variants of a protecting means 5 are illustrated.
• the protecting means 5 is a porous three-dimensional body 9, which has a large quantity of cavities 10 of the same or varying size.
• Such a structure 9 with cavities 10 or pores has an appearance similar to that exhibited by a sponge material.
• This protecting means 5, too can have the characteristics which are described above for the network and grid constructions.
• a member 4 for warming said medium in the reservoir 2 is also present, disposed in the lower part of the reservoir 2.
• a larger cavity, offering space for the warming member 4 can be disposed in the protecting means, or the extent of the protecting means 5 can be limited, as illustrated in figure 3b, to that part of the reservoir 2 which is without the warming member 4.
• the protecting means 5 has a plurality of elongated elements 11 fastened in the upper end of the reservoir 2.
• elongated elements such as, for example, rods 12 of different length and cross section, can be used for said medium to freeze to these rods.
• the rods 12 are designed to extend into the reservoir 2 from an opening 13 in the reservoir 2 and, expediently, the rods 12 are suspended from a component 14 which is detachably disposed in the reservoir.
• the component 14 can be configured so that the opening 13 can be closed and opened by means of the component 14.
• This component 14 can be configured and have a flexibility such that the protecting means 5 can move in relation to the reservoir 2 by flexing of the suspension component 14 when the protecting means 5 is subjected to load as a result of transport of the vehicle.
• the component 14 preferably has an elasticity which is higher than that of the material of the protecting means 5, in this case the rods, so as to allow certain flexing, and thus movement, of the rods in relation to the reservoir 2. The movement of one or more lumps which are frozen to the protecting means 5 can thereby be dampened in the manner which is described above.
• the rods 12 per se can be configured and made of a material which allows the rods themselves to be able to spring, i.e.
• the opening for the elongated elements 11 is disposed in the upper part of the reservoir 2 , it could be disposed elsewhere in the reservoir.
• the protecting means in the form of elongated elements could also be arranged without special opening in the reservoir, by the fastening of rods, for example, on the inner side of the walls of the reservoir.
• the protecting means can be designed to deter displacement of said frozen medium from a first part-volume 19 of the reservoir 2 to a second part-volume 20 of the reservoir 2, see especially figures 3a and 3b.
• the protecting medium 5 can be designed to deter displacement of said frozen medium from a first part- volume 19 of the reservoir to a second part-volume 20 of the reservoir, which second part-volume contains a further member 4 disposed inside the reservoir 2.
• Such a member can be designed, for example, to warm said medium in the reservoir 2.
• Figure 5 shows a further embodiment of the protecting means 5 according to the invention in the form of a resilient layer 15 disposed along at least a part of the inner limit face 16 of the reservoir 2.
• Such a layer 15 expediently has a higher flexibility than the material in the walls 17 of the reservoir so as to act as a shock absorber between frozen matter present in the reservoir 2 and the bearing walls 17 of the reservoir.
• the resilient layer can be made, for example, of rubber or the like.
• Such a protecting means 5, apart from acting as a shock absorber, can also prevent abrasion on the walls of the reservoir.
• the thickness and deformability of the layer 15 can be matched to the expansion which said medium suffers in the reservoir as it freezes, so that, at least at a certain level of filling of said medium in the reservoir, the expansion upon freezing is wholly or partially compensated by the elastic deformation of the layer.
• the layer can hence help to hold the frozen matter still through pressurization of the frozen matter by the compressed layer.
• Figure 6 illustrates a variant of a protecting means 5, which is based on the fact that one or more counter- stays 18 are disposed inside the reservoir 2 in order essentially to detain said frozen medium in a certain part or certain parts of the reservoir.
• one or more such counter-stays 18 is/are disposed close to a wall 17 of the reservoir 2. It is also possible, as illustrated, to form the counter-stays 18 by a special configuration of the walls 17 of the reservoir.
• said at least one solid body, i.e. the protecting means 5, is constituted by at least one component which, at the same time, constitutes part of a wall 17 of the reservoir 2.
• the counter- stay (s) 18 is/are designed to deter displacement of said frozen medium from a first part-volume 19b of the reservoir to a second part-volume 20b of the reservoir 2 and thereby essentially detain said frozen medium in a certain part of the reservoir, for example in the lower or upper part of the reservoir 2.
• the protecting means 5 can be designed especially to deter displacement of said frozen medium from a first part-volume of the reservoir to a second part-volume of the reservoir, which second part-volume contains a further member disposed inside the reservoir in order to protect this member.
• a further member disposed inside the reservoir in order to protect, for example, a warming member disposed inside the reservoir, it is possible, by means of the protecting means, essentially to detain frozen matter in a volume which does not comprise the warming member, but it might also be possible to utilize the protecting means to detain said frozen medium in the volume containing the further member in order instead to ensure that the matter frozen on this member does not adversely affect the member by moving, and hence pulling along the member and subjecting it to load.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Mechanical Engineering (AREA)
• Toxicology (AREA)
• Combustion & Propulsion (AREA)
• Health & Medical Sciences (AREA)
• General Engineering & Computer Science (AREA)
• Exhaust Gas After Treatment (AREA)
• Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
• Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
• Details Of Rigid Or Semi-Rigid Containers (AREA)
• Filling Or Discharging Of Gas Storage Vessels (AREA)
• Braking Arrangements (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=29546647

Family Applications (1)

Country Status (6)

Families Citing this family (6)

Citations (4)

Family Cites Families (17)

• 2003
  • 2003-10-27 SE SE0302836A patent/SE525987C2/sv not_active IP Right Cessation
• 2004
  • 2004-10-27 EP EP04793867A patent/EP1682753A1/de not_active Withdrawn
  • 2004-10-27 CN CNB2004800256366A patent/CN100445521C/zh not_active Expired - Fee Related
  • 2004-10-27 US US11/308,741 patent/US20060196560A1/en not_active Abandoned
  • 2004-10-27 WO PCT/SE2004/001567 patent/WO2005042935A1/en active Application Filing
  • 2004-10-27 BR BRPI0415907-1A patent/BRPI0415907A/pt not_active IP Right Cessation

Patent Citations (4)

Non-Patent Citations (1)

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