EP0214974B1 - Reacteur pour gaz d'echappement et procede de traitement des gaz d'echappement - Google Patents

Reacteur pour gaz d'echappement et procede de traitement des gaz d'echappement Download PDF

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Publication number
EP0214974B1
EP0214974B1 EP19850902449 EP85902449A EP0214974B1 EP 0214974 B1 EP0214974 B1 EP 0214974B1 EP 19850902449 EP19850902449 EP 19850902449 EP 85902449 A EP85902449 A EP 85902449A EP 0214974 B1 EP0214974 B1 EP 0214974B1
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EP
European Patent Office
Prior art keywords
exhaust gas
exhaust
gas
reactor
throw
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.)
Expired - Lifetime
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EP19850902449
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German (de)
English (en)
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EP0214974A1 (fr
Inventor
Hans Karl Leistritz
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LEISTRITZ, HANS KARL
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Individual
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Publication date
Priority claimed from BE2/60464A external-priority patent/BE900193A/nl
Priority claimed from DE19843434980 external-priority patent/DE3434980A1/de
Priority claimed from DE19853511941 external-priority patent/DE3511941A1/de
Application filed by Individual filed Critical Individual
Priority to AT85902449T priority Critical patent/ATE60936T1/de
Publication of EP0214974A1 publication Critical patent/EP0214974A1/fr
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Publication of EP0214974B1 publication Critical patent/EP0214974B1/fr
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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
    • F01N3/08—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
    • F01N3/24—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 constructional aspects of converting apparatus
    • F01N3/26—Construction of thermal reactors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Definitions

  • the invention relates to a method for the aftertreatment of the exhaust gases of an internal combustion engine in an exhaust gas reactor according to the further features specified in the preamble of claim 1.
  • An exhaust gas reactor for performing the generic method is known from DE-A-33 00 521.
  • the amount of exhaust gas periodically expelled by the internal combustion engine first reaches a jet pipe group provided in the reactor housing, within which it is mixed with air to form an exhaust gas / air mixture.
  • the exhaust gas / air mixture leaving the jet pipe group then arrives in a post-combustion chamber.
  • the post-combustion chamber comprises a planar throw-back wall, which is oriented transversely to the flow direction of the exhaust gas / air mixture, and an ignition device.
  • the exhaust gas-air mixture leading against the back wall is reflected in the opposite direction to the forward direction, compression of the exhaust gas-air mixture occurring and at the same time the compressed mixture being brought to the afterburning by the ignition device.
  • the afterburned exhaust gas-air mixture leaves the afterburning chamber in the direction of an upstream outlet space which is connected to an exhaust duct leading to the outside.
  • the compression of the exhaust gas-air mixture in front of the back wall is not so high that the self-ignition temperature is reached, which is why the afterburning must be constantly supported by the ignition device.
  • an exhaust gas reactor which comprises a jet pipe group and an adjoining post-combustion chamber, both of which are constructed similarly to the generic exhaust gas reactor and which therefore has the same disadvantages as this.
  • the invention has for its object to provide a method and an exhaust gas reactor for the aftertreatment of the exhaust gases emitted by an internal combustion engine, with which an automatic afterburning of the exhaust gases is achieved without increasing the exhaust gas back pressure, at least when the internal combustion engine is warm.
  • the shock wave reflected on this is focused, that is to say strongly bundled and highly compressed.
  • Another advantage of the invention results from the special design of the reactor housing following the afterburning chamber as a thrust nozzle with a subsequent train path.
  • the exhaust gas / air mixture which is highly compressed in the hot gas zone, is acceleratedly discharged into the exhaust duct through the thrust nozzle and the train path, thereby preventing an increase in the exhaust gas back pressure in the entire exhaust system, so that the performance of the internal combustion engine is not impaired by the exhaust gas reactor.
  • FIG. 1 the exemplary embodiment according to FIG. 1 will first be discussed in detail in order to explain the basic features of the present invention. In the exemplary embodiments of the following figures, only the respective different features will then be discussed.
  • 10 designates an exhaust gas reactor for an internal combustion engine.
  • the internal combustion engine is located behind the exhaust gas reactor 10.
  • a piston 11 can be seen behind an exhaust duct 12, which in the exemplary embodiment shown can be the exhaust duct 12 of a two-stroke engine. In the position shown in FIG. 1, the piston 11 is in a position which corresponds to half an opening of the outlet channel 12.
  • the exhaust gas reactor 10 is contained in a double-walled housing 13, which can be filled with a known and suitable insulating material 14 for sound and heat insulation.
  • an exhaust duct 15 which is similar to an exhaust system with silencers known per se and the like. leads.
  • a first air intake line 17 is connected to a bottom 16 of the housing 13 and is closed with an end wall 18 in the interior of the housing 13. Below the final wall 18 there are lateral openings 19 through which a first fresh air, indicated at 20, can flow in from the first air intake line 17.
  • a second air intake line 21 can be seen, in which a sound-absorbing element 22 can also be located, also in an exemplary representation.
  • a second fresh air, indicated by 23, can enter through the second air intake line 21.
  • a cover 24 of the housing 13 has a third air intake line 25, in which a control flap 26 can also be located, also in an exemplary representation. It goes without saying that the other air intake lines 17 and 21 can also be provided with such control flaps, which also applies to the exemplary embodiments described below.
  • an intermediate base 27 In the area of the base 16 of the housing 13, an intermediate base 27 can be seen, which divides a first air intake chamber 28. In a corresponding manner, the space in the area of the cover 24 of the housing 13 is defined as a second air intake chamber 29.
  • an exhaust gas inlet space 30 Above the first air intake chamber 28 there is a space defined as an exhaust gas inlet space 30, into which the outlet duct 12 opens.
  • An exhaust gas indicated at 31 enters the exhaust gas input space 30 and is directed from there to a jet pipe group 32.
  • the jet pipe group 32 is configured in a bundle-like manner, that is to say it is an essentially axial-symmetrical element which, distributed around the axis of the exhaust gas reactor 10, contains an abundance of lines which are arranged distributed over its circumferences.
  • axial raw gas lines 33 are initially provided, into which the exhaust gas 31 flows from the exhaust gas input space 30 without further ado and which do not carry any further gas.
  • Axial mixed gas lines 34 in which coaxial fresh air lines 35 are located, also extend parallel to the raw gas lines 33.
  • the fresh air lines 35 are connected to the first air intake chamber 28 and the mixed gas lines 34 are connected to the exhaust gas input space 30.
  • a gas mixture, indicated at 37, is thus formed at the outlet of the mixed gas lines 34, which mixes immediately with the exhaust gas 31 from the raw gas lines 33.
  • blowers 38 are also indicated, which can be used to convey a sufficient amount of fresh air 20 into the exhaust gas reactor 10, if this is necessary for process reasons.
  • the axial raw gas lines 33 and the likewise axial mixed gas lines 34 converge in inclined jet lines 36, all of which open together into a cylindrical loading space 40, which is also provided with openings 39 on its cylindrical surface.
  • the feed chamber 40 is closed on its underside by a continuous wall 41, but in variants of the invention, a conical extension 42 can be provided here, which opens downwards, as is described in the exemplary embodiment according to FIG. 3.
  • the upper open edge 43 of the loading space 40 opens to a throw-back section 44 which is delimited at the top by a first, frustoconical hood part 45.
  • the bottom of the hood part 45 is formed by a throw-back wall 46, through the central opening 47 of which a spark plug 48 protrudes.
  • the spark plug 48 is seated in a known version 49 and is connected via a line 50 to an ignition system 51 of an internal combustion engine 52.
  • the internal combustion engine 52 is supplied by a fuel metering device 53, for example a carburetor, an injection system or the like.
  • the fuel metering device 53 is connected to a temperature sensor 54, which is located in the region of the discard section 44.
  • the first, frustoconical hood part 45 is surrounded in the region of its opening by a second, cylindrical hood part 56 which telescopically extends the first frustoconical hood part 45 and thereby encloses the upper part of the loading space 40.
  • the second, cylindrical hood part 56 is provided with openings 56a in the region of its cylindrical wall and with openings 56b in the region of its bottom surrounding the first frustoconical hood part 45.
  • the second, cylindrical hood part 56 opens on its underside towards a narrowing thrust nozzle 57, which fills the entire inner cross section of the housing 13 and thus separates the upper, second air intake chamber 29 from the middle exhaust gas inlet space 30.
  • the narrowing thrust nozzle 57 has a conical section 58 which merges into a train section 59 in the region of its narrow mouth 63.
  • the train route 59 finally leads to the exhaust duct 15.
  • the mode of operation of the exhaust gas reactor according to FIG. 1 is as follows:
  • the piston 11 moves downward and exposes a slot in the exhaust duct 12.
  • the amount of exhaust gas present at the opening slot and under high pressure triggers a pressure wave of high speed, which initially fills the exhaust gas input space 30 and then continues through the jet pipe group 32.
  • the shock wave Due to the angle of incidence of the inclined beam lines 36, the shock wave is focused in the throw-back section 44 and then reflected on the throw-back wall 46 and on the conical surfaces of the first, frustoconical hood part 45. After the reflection, the shock wave is consequently refocused and forms convergence zones both in the throw-back section 44 and in a zone 60 within the hood parts 45, 56, at which very high temperatures form due to the high energy density.
  • the shock wave since the shock wave, as already mentioned, has a much higher speed, typically supersonic speed, than the amount of gas ejected by the cylinder 11, the so-called "gas quantum", it leads the gas quantum.
  • the lagging gas quantum likewise passes through the exhaust gas inlet space 30 and penetrates into the raw gas lines 33 and the mixed gas lines 34, where fresh air 20 is drawn in and taken away from the fresh air lines 35.
  • the exhaust gas reactor 10 according to FIG. 1 is now dimensioned such that the exhaust gas quantum reaches zone 60 at the moment at which the hot gas zones explained above have already formed as a result of the focusing of the leading shock wave.
  • the entire throw-back section 44 and zone 60 are now provided with a reactive and very high-energy gas mixture at a very short moment and determined by the cycle of the internal combustion engine 52, which gas mixture is now caused to explode by means of the spark plug 48.
  • the time of this explosion is coordinated so that at the explosion moment the piston 11 has again closed the outlet channel 12, so that a reaction to the internal combustion engine 52 is not possible.
  • the explosion in the cylinder of the internal combustion engine is triggered at the same instant, so that the outlet channel 12 is loaded symmetrically.
  • the above description relates primarily to the case of a cold start of the internal combustion engine 52, in which the reactive mixture in the exhaust gas reactor 10 has to be made to explode by spark ignition.
  • the walls in the area of the throw-back section 44 and the zone 60 have reached cherry red heat, so that the subsequent ignitions of the post-explosion take place as auto-ignitions as in a diesel engine.
  • the timing of the post-explosion is precisely defined, namely that the post-explosion also runs exactly synchronously with the ignition of the internal combustion engine 52 in the case of self-ignition, so that nothing changes in the process explained above.
  • the temperature sensor 54 for example a bimetal spring; can advantageously act on the fuel metering device 53 during the cold start phase in order to further improve the exhaust gas reduction in this operating mode.
  • control devices for the amount of fresh air 20 supplied can be provided, but this will only be explained further below with reference to FIG. 3.
  • FIG. 2 shows a variant 10a of the exemplary embodiment according to FIG. 1, specifically in the following respect:
  • the exemplary embodiment according to FIG. 2 differs in that a sleeve 65 is arranged in the central position of the cover 24 and is provided with lateral openings 66.
  • a candle holder 67 which carries a holder 68 for the candle 48.
  • annular space 69 through which fresh air 70, 71 came into the second air intake after passing through the openings 66 mer 29 can flow.
  • Part of the fresh air 70 flows through the central opening 47 in the discard wall 46, while another part of the fresh air 71 flows through side openings 55 of the first hood part 45.
  • the secondary air is therefore supplied to the reaction space around the candle 48 to an even greater extent.
  • a further variant in the exemplary embodiment according to FIG. 2 is that the second, cylindrical hood part 56 can be continued downward, as indicated by 56a, so that it extends into the thrust nozzle 57 there.
  • a further variant in the exemplary embodiment according to FIG. 2 is that the axial fresh air lines 35a open directly into the inclined jet lines 36, so that there is a simplified structure compared to FIG. 1.
  • FIGS. 1 and 2a shows a further variant 10b of the exemplary embodiments according to FIGS. 1 and 2.
  • FIG. 2a there is a hood 80 above the cover 24, to which the second air intake line 21a is connected at the side.
  • the pipe pieces 82 of smaller diameter are arranged distributed over a circumference, while the larger pipe piece 83 is arranged centrally and surrounds the candle holder 67a via an annular space 65a.
  • a flat but wide piece of pipe 84 is also inserted into the throw-back wall 46 and surrounds the ignition electrode of the spark plug 48.
  • a counterelectrode 85 extends from the tube piece 84 and is preferably connected to ground.
  • the spark plug 48 according to FIG. 2a can, for example, be in series with a spark plug of the internal combustion engine (not shown in FIG. 2a), so that a synchronous ignition of the post-explosion with the next explosion in the combustion chamber of the internal combustion engine is therefore already guaranteed.
  • FIG. 3 shows a further exemplary embodiment of an exhaust gas reactor, which is denoted overall by 90.
  • a piston of a four-stroke gasoline engine can be seen in the lower left half of FIG. 3, and the exhaust valve is indicated at 92.
  • the outlet duct 93 which is designed as a manifold, merges via a flange 94 into a double-walled housing 95 of the exhaust gas reactor 90.
  • An exhaust duct 96 is connected to the bottom of the housing 95.
  • a cover 97 and below the cover 97 a first air intake line 98 can be seen which contains a control flap 99 with an axis 100.
  • the axis 100 is connected to a servo unit 102 via a linkage 101.
  • the servo unit 102 is in turn actuated by a lambda control 103 of the internal combustion engine 52, with which it is connected via a line 104.
  • a first fresh air indicated at 105 passes through the first air intake inlet 98 in a controlled, metered manner.
  • Openings 106 can be seen in the left and right upper area of the housing 95, through which a second fresh air, indicated by 107, can get into the housing 95. It goes without saying that a line with a control flap can also be arranged in the region of the openings 106.
  • the exhaust gas coming from the outlet duct 93 first reaches an exhaust gas inlet space 110 to which a jet pipe group 111 with inclined mixed gas lines 112 is connected.
  • mixed gas lines 112 there are concentric fresh air lines 113, via which fresh air 114 passes from an annular space 115, the annular space 115 being connected to the openings 106 and adjoining the housing 95 on the outside.
  • the inclined mixed gas lines 112 are directed into a charging space 116, which is closed at its underside with a wall 117.
  • a conical extension 118 is centrally located in the wall 117 and opens the loading space 116 downwards.
  • Openings 119 are located in the upper, cylindrical region of the loading space 116.
  • a first hood part 120 which has a curved throw-back wall 121 and an adjoining cylindrical hood part 122.
  • the arched throw-back wall 121 is provided with openings 123.
  • a pipe section 124 is attached to it, which encloses a wall 126 via an annular space 125, on which a spark plug 127 is arranged.
  • a second hood part 128 of a similar shape which includes a throw-back chamber 129.
  • a viewing tube 130 extends through the hood parts 120, 128, through which the reaction processes in the exhaust gas reactor 90 can be observed for adjustment purposes, for example by means of a glass fiber optic.
  • the second hood part 128 also has a domed hood 131.
  • the hood 131 delimits an air intake chamber 132 at the bottom and the cover 97 delimits it at the top.
  • the area within the cylindrical hood part 122 essentially forms the zone 133 of the after-explosion. This area opens towards a downwardly directed and narrowing thrust nozzle 135, which in turn merges into a train path 136.
  • the thrust nozzle 135 closes to the outside with a wall 137 which delimits the annular space 115 to the inside.
  • the annular space 115 merges at the bottom into a floor space 138, from which a cooling air suction line 139 leads to an outlet 140, at which fresh air, indicated at 141, reaches the exhaust duct 96.
  • a heat exchanger is indicated, which is part of a cooling system 143 and surrounds the line 139, so that heat can be extracted from the fresh air 141 at this point.
  • the mode of operation of the exhaust gas reactor 90 according to FIG. 3 is as follows:
  • the gas mixture is fed into the feed space 116 and the post-explosion in zone 133 takes place essentially as already described for FIG. 1.
  • the exhaust gas reactor 90 according to FIG. 3 differs from the exhaust gas reactor 10 according to FIG. 1 in that the first air intake chamber 28 provided there is omitted and replaced by the annular space 115.
  • This annular space 115 surrounds the post-explosion section and dissipates heat there.
  • the fresh air 114 from the annular space 115 is not used for the primary air admixture via the fresh air lines 113, it is sucked off in the direction of the cooling air suction line 139 into the exhaust duct 96, so that considerably more fresh air 114 acts as cooling air than it actually does to the primary air -Mixing would be needed.
  • FIG. 4 shows a further exemplary embodiment of an exhaust gas reactor 149.
  • This exemplary embodiment is again similar to that of FIG. 1, but with a deviation in regions downstream of the thrust nozzle 57a.
  • the thrust nozzle 57a merges into an axial train path 150, which ends in a resonance chamber 151.
  • the surface 152 opposite the train path 150 acts as a throw-back wall.
  • the approximately cylindrical resonance chamber 151 is connected to a follow line 153 which leads to the exhaust duct.
  • the special feature of the exemplary embodiment according to FIG. 4 is that the exhaust gas reactor 149 has two post-explosion spaces.
  • FIG. 4 In the upper part of FIG. 4, the elements already explained in detail for FIG. 1 are provided, which operate in the manner described at low and medium engine speeds.
  • the shock wave is reflected on the inclined surfaces 58a of the thrust nozzle 57a and focused into a focal length which extends into the resonance chamber 151. After reflection on the surface 152, convergence areas and thus hot zones form in the area of the resonance chamber 151, and the exhaust gas quantum that follows much faster at extremely high speeds reaches these zones and ignites there by itself, because at extremely high speeds the required cherry red glow already Walls.
  • the exemplary embodiment according to FIG. 5 shows an exhaust gas reactor 159 in a strictly axial construction.
  • An outlet duct 162 leads from a piston 160 in a cylinder 161 to a jet pipe group 163, the inclined raw gas lines 164 of which diverging.
  • the raw gas lines 164 extend on the outside of a conical throw-back element 166, the tip of which projects as an inclined wall 165 into the inlet of the jet pipe group 163.
  • the discard element 166 is hollow on the inside and forms inclined discard walls 167 there.
  • the raw gas lines 164 merge into nozzle-shaped outlet openings 168.
  • an air intake line 146 arranged in the cover area of the exhaust gas reactor 159 fresh air enters an air intake chamber 157 which forms an annular air line 158 on its underside and surrounds the nozzle-shaped outlet openings 168.
  • the gas mixture which consequently forms in the region of the nozzle-shaped outlet openings 168 reaches a narrowing thrust nozzle 169 which is consequently arranged in the opposite direction to the opening 170 of the throw-back element 166.
  • the inclined walls 171 of the thrust nozzle 169 therefore run inclined in the opposite direction to the inclined inner walls 167.
  • a hollow conductor 172 adjoins the thrust nozzle 169 on the underside and runs axially in a tubular manner and has a wave-gas separator 173 at its end.
  • Waveguide is to be understood as meaning a hollow line which is essentially free of internals, e.g. a pipeline or other suitable cavity that allows incoming and reflected shock waves to be conducted.
  • Wide-gas separator is to be understood as an element in which a gas passage is provided at one end of a line for the gas to be passed on, but on the other hand a reflection element also ensures the return of the incident shock wave.
  • the wave-gas separator 173 is designed as a stub of a train path 175 projecting into the end of the waveguide 172.
  • the stump is closed by a throw-back wall 174 and below the throw-back wall 174 there are lateral openings 176 in the train path 175.
  • a spark plug 177 is also provided in the transition area between the thrust nozzle 169 and the waveguide 172.
  • the mode of operation of the exhaust gas reactor 159 according to FIG. 5 is as follows:
  • the exhaust gas flowing in via the outlet channel 162 first reaches the inclined wall 165 and is circularly swirled there and passed evenly into the inclined pipe gas lines 164.
  • the thus diverged exhaust gas flow mixes in the area of the nozzle-shaped outlet openings 168 with the fresh air supplied via the air line 158 and strikes the inclined walls 171 of the thrust nozzle 169.
  • the shock wave leading the exhaust gas quantum is reflected obliquely downward in FIG. 5 on the inclined walls 171 , whereby an axially extending firing section is formed in the area of the waveguide 172.
  • the shock wave After hitting the throw-back wall 174, the shock wave is reflected there and, if necessary after renewed reflection on the inclined throw-back walls 167 of the throw-back element 166, again in the area of the thrust nozzle 169, where the exhaust gas quantum has now arrived and the after-explosion has occurred in the form already described takes place.
  • the special feature of the exhaust gas reactor 159 according to FIG. 5 is, in addition to the purely axial construction, on the one hand the shock waves / gas flow with first diverging and then converging of both phenomena, on the other hand the special is also the complete energetic utilization of the shock wave caused by the wave Gas separator 173 is held substantially above this element, while the exhaust gas quantum can easily leave the exhaust gas reactor 159 via the openings 176.
  • the waveguide 172 which is closed at one end by the thrust nozzle 169 and the inclined throw walls 167 and at the other end by the throw wall 174, acts as a shock tube in the sense of shock wave technology.
  • the shock wave runs back and forth one or more times and with its shock front overflows the gas quantum that occurs later.
  • the shock wave reflected by the oblique throw-back walls 167 is reflected obliquely downward on the oblique walls 171 into the waveguide 172, so that an elongated firing distance results.
  • This route which is also referred to in the context of the present invention as a “dwell route”, is particularly advantageous in the case of strongly varying rotational speeds, because the speed of the phenomena naturally also changes when the rotational speed changes.
  • an exhaust gas reactor 179 is shown, which has a plurality of laterally arriving outlet channels 180, 181 of a multi-cylinder internal combustion engine.
  • the outlet channels 180, 181 open onto a circumferential inclined wall 182 of an exhaust gas inlet space 183, from which inclined mixed gas lines of a jet pipe group 184 extend, which in this exemplary embodiment are arranged convergingly.
  • the mixed gas lines 185 open into a cylindrical mixing space 186, which is connected via a plurality of openings 189 to a first air intake chamber 188, which in turn is connected to a first air intake line 187.
  • a fresh air line 191 which is connected to a second air intake chamber 199 via openings 193.
  • the second air intake chamber 192 receives fresh air via a two air intake line 194 supplied.
  • a train section 196 Downstream of the mixing chamber 186 is a train section 196, which is designed as a curved tube. Surfaces 197, 198 of the train route 196 are provided with a special curvature, which allow the shock wave coming from the mixing space 186 to be focused.
  • a spark plug 200 is provided at a suitable point on the train route 196.
  • a thrust nozzle 199 connects to the train route 196.
  • the mode of operation of the exhaust gas reactor 179 according to FIG. 6 is as follows:
  • the shock wave arriving via the outlet channels 180 or 181 is first converged via the inclined mixed gas lines 185 and then repeatedly reflected in the train path 196 on the suitably curved surfaces 197, 198 and alternately converging and diverging, so that in the region of the train path 196 the already Form hot zones mentioned, in which the subsequent exhaust gas quantum is brought to the post-explosion by means of the spark plug 200.
  • the gas mixture in its mixing ratio, on the one hand, but also in its temperature, on the other hand, can be set as desired.
  • the exemplary embodiment according to FIG. 7 shows an exhaust gas reactor 210 with an outer wall 211, to which, through this, an outlet duct 212 of an internal combustion engine is connected.
  • the outlet channel 212 opens into an exhaust gas inlet space 213, from which a jet pipe group 214 with raw gas lines 215 and mixed gas lines 216 emerges.
  • the raw gas lines 215 and the mixed gas lines 216 run in the exhaust gas reactor 210 according to FIG. 7 as well as fresh air supply lines 217 parallel to each other and in the axial direction.
  • the fresh air supply lines 217 are connected to an air intake chamber 218, which is connected to the outside atmosphere via a first air intake line 219 with a control flap 220.
  • annular space 221 Inside the outer wall 211 there is an annular space 221, which is closed inwards by a wall 222 concentric with the outer wall 211.
  • the exhaust gas input space 213 is closed at the bottom by a conical wall 225 which runs continuously to wall 222 and then, provided with openings 226, extends to outer wall 211.
  • the conical wall 225 thus includes a transition zone 224.
  • Adjoining the downwardly widening conical wall 225 is a downwardly tapering conical wall 228 which includes a zone 223.
  • Zone 223 merges into a train route 235 below, with a spark plug 236 in the transition located.
  • the transition is formed by a waveguide 238, which is closed at the exhaust end by a wave-gas separator 237.
  • a second air intake line 230 extends through the jet pipe group 214, which is provided with a control flap 231 and runs down below the end of the pipes of the jet pipe group 214 into a downwardly widening conical opening 232 with openings 233.
  • the mouth 232 is located in the area of the transition zone 224.
  • the mode of operation of the exhaust gas reactor 210 according to FIG. 7 is similar to that of the exhaust gas reactor 79 according to FIG. 6, insofar as secondary air postmixing also takes place there via a central pipeline (fresh air line 234) into the outlet area of the jet pipe group 214.
  • both phenomena are initially guided axially parallel in the jet pipe group 214 and only converge in the area of the transition zone 224 and the zone 223.
  • the shock wave can be reflected downward on the flat conical walls 228 of the thrust nozzle 227, so that a long burning distance is formed in the entrance area of the train path 235.
  • the spark plug 236 is then consequently also located in this area.
  • the waveguide 238 provided in the transition area from the zone 223 to the train path 235 in turn acts as a shock tube, the throwing walls acting at the ends being the conical wall 225 and the throwing walls of the wave-gas separator 237.
  • FIG. 8 shows a further exemplary embodiment of an exhaust gas reactor 240, likewise with a plurality of outlet channels 241, 242 of a multi-cylinder internal combustion engine, as has already been explained for FIG. 6.
  • the outlet channels 241, 242 have an inclined wall 243 of an exhaust gas input space 244 and deflect both the shock wave and the subsequent exhaust gas quantum downward into mixed gas lines 245 running parallel to the axis.
  • the air intake chamber 248 located above the inclined wall 243 is connected to the outside atmosphere by an air intake line 249 which runs perpendicular to the plane of the drawing according to FIG. 8.
  • a zone 250 extends below the mixed gas line 245 and merges into a narrowing thrust nozzle 251 with conical oblique walls 252.
  • a waveguide 253 which emerges from the housing of the exhaust gas reactor 240 with a ceramic insulation 254, runs concentrically to the jet pipe group 260 formed from the mixed gas lines 245 and the fresh air lines 246.
  • the waveguide 253 goes into one at its lower end downward opening further thrust nozzle 255, which is located in the area of zone 250.
  • the waveguide 253 is provided with a wave-gas separator 261.
  • the opening 256 of the further thrust nozzle 255 lies opposite the tapering end of the thrust nozzle 251, which leads via a line section only shown broken off in FIG. 8 to a further waveguide 257, which has the throw-back wall 258 and holds a spark plug 259.
  • the mode of operation of the exhaust gas reactor 240 according to FIG. 8 is as follows:
  • the shock wave After emerging from the mixed gas lines 245, the shock wave is reflected on the downwardly sloping conical walls 252 of the thrust nozzle 251 and focused in the region of the further waveguide 257 along a focal line. After reflection on the throw-back wall 258, mixing with the subsequent exhaust gas quantum in the hot zones and ignition via the spark plug 259, however, the burned-out end gas now flows into the opening 256 of the further thrust nozzle 255 and from there into the waveguide 253, specifically in the counterflow direction, based on the flow direction of the jet pipe group 260.
  • an arrangement with two waveguide sections namely the upper pipeline 253 and the lower, further waveguides 257, is used in the context of the present invention as a "double shock tube".
  • the gas mixture is fed in the transition region between the two waveguides 253, 257, specifically obliquely downwards, into the further waveguide 257.
  • the shock wave now runs through the double shock tube with one or more reflections on the return walls 258 and those of the wave-gas separator 261.
  • FIG. 9 shows an exhaust gas reactor 270 with a laterally attached piston 271 in a cylinder 272, which is connected to an exhaust gas inlet space 274 via an outlet channel 273.
  • a jet pipe group 275 in turn extends axially parallel in raw gas lines 276 and concentric mixed gas lines 277.
  • An air intake line 278 running perpendicular to the drawing plane according to FIG. 9 opens into a first air intake chamber 279, which is connected to the mixed gas lines 277 via a second chamber 280.
  • a cylinder sleeve-shaped throw-back element in the form of a waveguide 281 with a cylindrical region 282 and a conical opening 283 pointing downwards, and a radial throw-back wall 294.
  • the throw-back element 281 opens towards a downwardly tapering thrust nozzle 284, which has conical walls 285 sloping downwards.
  • a spark plug 287 is located in the transition region.
  • a wave-gas separator 288 with throw walls 289 arranged one below the other in a labyrinthine manner and openings 290 arranged in between and laterally.
  • the openings 290 leading laterally outwards lead to an annular space 291 which surrounds the train path 286.
  • a follow line 292 leads laterally from the annular space 291, which leads past the jet pipe group 275 and the outlet duct 273, then re-opens into the housing of the exhaust gas reactor 270 and opens through the air intake chamber 279, 280 into an exhaust duct 293.
  • the shock wave and the exhaust gas quantum are initially guided similarly to the exemplary embodiment according to FIG. 8 (axially parallel jet tube group) and to the exemplary embodiment according to FIG. 8 (double shock tube with wave-gas separator at the end of the exhaust-side waveguide).
  • This exemplary embodiment is also an exhaust gas reactor 270 based on the principle of the double shock tube, which consists of the two waveguides 281 and 286 with likewise inclined lateral mixed gas supply in the transition area.
  • the special feature of the exemplary embodiment according to FIG. 9 is, in addition to the special design of the wave-gas separator 288, the countercurrent principle, according to which the burned-out end gas in
  • Annular space 291 flows upward again against the flow in the train path 286 and is then passed through the air intake chamber 279, 280 in heat-exchanging contact after passing through the following line 292.
  • FIG. 10 shows a further exemplary embodiment with an exhaust gas reactor 300, in which the shock wave and the exhaust gas are guided through a side-mounted outlet duct 301 into an exhaust gas input space 302 which is delimited at the top by a sloping wall 303.
  • the mixed gas lines 305 which run parallel to the axis, are partially penetrated by concentric fresh air lines 306, which at their upper end are connected to an air intake chamber 307 that is symmetrical about the exhaust gas inlet space 302.
  • the air intake chamber 307 communicates with the outside atmosphere via an air intake line 308 with a control flap 309.
  • the mixed gas lines 305 open downwards into a downwardly tapering thrust nozzle 310 with conical walls 311. Opposite to the thrust nozzle 310, a further thrust nozzle 312 with an opening 313 is arranged, which continues upwards into a waveguide 314, which is provided with a radial return wall 315 is.
  • the thrust nozzle 310 merges downwards into a cylindrical base 316 with a spark plug 317, which forms a throw-back wall 318.
  • the waveguide 314 is provided with side openings 319, which lead to a space 320, which in turn is connected to an exhaust duct 321.
  • a viewing tube 322 is again provided at the upper axial end of the train path 314.
  • the operation of the exhaust gas reactor 300 according to FIG. 10 largely corresponds to that of the exhaust gas reactor 240 according to FIG. 9 with the difference that only a single outlet channel 301 is provided in the exhaust gas reactor 300 according to FIG. 10 and the exhaust gas inlet space 302 and the air intake chamber 307 have the special cross-sectional shape already described.
  • the burned-out tail gas at the end of the waveguide 314 is again deflected laterally and only then introduced into the exhaust duct 321.
  • the openings 319 are designed as a perforated sheet and are dimensioned such that they can retain soot particles in the exhaust gas of a diesel engine, such as occur particularly when the diesel engine is cold started. Since the fine perforated plate with the openings 319 is located at the end of the waveguide 314 clamped on one side, it vibrates comparatively strongly, so that the openings 319 do not have to be clogged.
  • soot particles accumulating on the inside of the openings 319 are collected there during the cold start phase of the diesel engine and burned off as soon as the waveguide 314 has warmed up to operating temperature.
  • control flap 309 again indicates that a controlled supply of fresh air can of course also be provided in these exemplary embodiments, as was explained in detail above in relation to FIG. 3.
  • FIG. 10a shows a variant 300a of the exhaust gas reactor 300 according to FIG. 10.
  • the exhaust gas reactor 300a differs in two respects:
  • the thrust nozzle 310a is not surrounded by an insulating material but rather by a further air intake chamber 323 which is connected to the outside atmosphere via an air intake line 324. From the air intake chamber 232, several obliquely positioned fresh air lines 325 lead in the manner of a further jet pipe group into the further thrust nozzle 312a of the waveguide 314a.
  • reaction chamber of the exhaust gas reactor 300a is cooled by means of the air intake chamber 323, which can be particularly advantageous in the case of very warm four-stroke gasoline engines.
  • secondary air postmixing can be implemented via the fresh air lines 325, in particular when there is a control flap in the air intake line 324, as has already been explained in detail with respect to FIG. 3.
  • FIG. 11 shows yet another, particularly simple embodiment of an exhaust gas reactor 330 according to the invention in a purely axial design, as can be used particularly well for motorcycles, lawn mowers and the like, preferably for single-cylinder internal combustion engines.
  • an outlet channel 331 opens into the exhaust gas reactor 330, which, with a widened cross-section, merges into a jet pipe group 332, specifically into inlet openings of raw gas lines 333, which can be arranged, for example, in six or eight rows over the circumference .
  • the raw gas lines 333 run diverging and open coaxially in mixed gas lines 334, to which fresh air is supplied from their upper end from an air intake chamber 335.
  • the air intake chamber 335 is connected at its lower end to the outside atmosphere with an air intake line 336 running perpendicular to the drawing plane according to FIG. 1.
  • the diverging mixed gas lines 334 open directly into a downwardly tapering thrust nozzle 337 with conical walls 338, a curved throw-back element 339 being arranged centrally in the outlet region of the diverging mixed gas lines 334.
  • a follow line 340 connects to the thrust nozzle 337 and leads to an exhaust duct.
  • the mode of operation of the exhaust gas reactor 330 according to FIG. 11 does not require any further explanation per se, because the principle of the diverging pipelines in the jet pipe group with an immediately adjoining and downstream tapering nozzle, which leads into the exhaust duct, has already been explained using the exemplary embodiment according to FIG. 5 .
  • FIG. 12 shows an exemplary embodiment of an exhaust gas reactor 350 according to the invention with a radially attached outlet channel 351.
  • the jet pipe group 355 is similar to that according to FIGS. 10 and 10a.
  • Mixed gas lines 358 which run coaxially in the axial sections of the mixed gas lines 357, are connected to an air intake chamber 359, which is connected to the outside atmosphere via an air intake conductor 360.
  • the thrust nozzle 354 merges into a lower waveguide 361 on its narrow underside, which is opposed by the already mentioned upper waveguide 362.
  • the waveguides 361, 362 are each provided with a throw-back wall 363 and 364, respectively.
  • the mode of operation of the exhaust gas reactor 350 according to FIG. 12 is as follows:
  • the introduction and guidance of the shock wave in a double shock tube corresponds to the exemplary embodiment according to FIGS. 10 and 10 a.
  • a special feature of the exemplary embodiment according to FIG. 12 is that the reaction space in the area of the thrust nozzle 354 is preheated by means of the second exhaust gas inlet space 355. This measure is therefore diametrically opposed to the exemplary embodiment according to FIG. 10a, in which, as described there, the reaction space was precooled.
  • the reason for preheating the reaction chamber in the exemplary embodiment according to FIG. 12 is the necessity of this measure for certain types of internal combustion engines, in particular for diesel engines.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

Le réacteur (10) pour gaz d'échappement émis par des moteurs à combustion (52) à échappement pulsant, présente un canal d'échappement (12) par lequel le gaz (31) est conduit à un faisceau de tubes (32). Dans ce faisceau le gaz (31) est mélangé avec de l'air frais (20) de manière à obtenir un mélange (37) à même d'entrer en réaction. Ce mélange entre en réaction ultérieurement dans une chambre et s'écoule comme gaz brûlé (62) vers un conduit d'échappement (15). Dans le but de diminuer les substances nuisibles contenues dans le gaz (31), cette réaction secondaire a lieu, au moins approximativement, dans la période du mouvement de gaz du moteur (52), le conduit d'échappement (12) étant fermé du côté du moteur. Sont aussi prévus des moyens pour faire diverger ou converger spatialement les ondes de choc et de réflexion, déphasées en avant, et causées par le mouvement périodique du gaz d'échappement. Les cônes de convergence sont ainsi surchauffés et le gaz d'échappement est dirigé dans ces zones. Les parois du réacteur (10) qui convoient les gaz d'échappement et les ondes de choc sont telles que le gaz passe les zones surchauffées au moment de l'explosion formant cette réaction secondaire.

Claims (11)

  1. Procédé de traitement des gaz d'échappement d'un moteur à combustion (52) dans un réacteur de gaz d'échappement (10; 90; 149; 159; 179; 210; 240; 270; 300; 330; 350), dans lequel la quantité de gaz d'échappement se trouvant sous pression et expulsée périodiquement, lors de chaque temps d'échappement, dans un canal de sortie (12; 93; 162; 180; 181; 212; 241; 242; 273; 301; 331; 351), est amenée à un groupe de tubes agencé à la manière d'un faisceau (32; 111; 163; 184; 314; 260; 275; 304; 332; 352) où elle est éventuellement mélangée à de l'air (20) pour constituer un mélage gazeux apte à réagir (37), mise en réaction dans une chambre de réaction suivante, au moyen d'un dispositif d'allumage (48; 127; 177; 200; 236; 259; 287; 317), puis amenée, en tant que gaz final complètement brûlé (62), à un canal d'échappement (15; 96; 293; 321), caractérisé par le fait qu'une onde de choc, déclenchée par la quantité de gaz d'échappement expulsée et précédant celle-ci, forme dans la chambre de réaction, par réflexion et focalisation de cette onde de choc contre les parois du réacteur qui la guident (10; 90; 149; 159; 179; 210; 240; 270; 300; 330; 350), une zone de gaz chaud à l'intérieur de laquelle l'onde de choc et l'onde de gaz d'échappement qui la suit se rencontrent, le mélange gazeux apte à réagir étant amené par le dispositif d'allumage (48; 127; 177; 200; 236; 259; 287; 317) à réagir dans la zone de gaz chaud à une température inférieure à la température de réaction du mélange gazeux, et, lorsque la température de réaction est atteinte dans la zone de gaz chaud, à réagir par auto-allumage, la réaction s'effectuant au rythme du changement de charge du moteur à combustion (52), le canal de sortie côté moteur étant fermé, et par le fait que le gaz final complètement brûlé (62) est évacué de manière accélérée hors de la zone de gaz chaud, dans le canal d'échappement (15; 96; 293; 321).
  2. Réacteur de gaz d'échappement (10; 90; 149; 159; 179; 210; 240;270; 300; 330; 350) pour mettre en oeuvre le procédé selon revendication 1, comportant, agencé dans l'enceinte du réacteur,un groupe de tubes (32; 111; 163; 184; 314; 260; 275; 304; 332; 352) auquel est amené le gaz d'échappement périodiquement expulsé par le moteur à combustion (52) lors de chaque temps d'échappement, ce gaz étant éventuellement mélangé en cet endroit avec de l'air (20) pour constituer un mélange gazeux apte à réagir (37), lequel passe dans une chambre de réaction suivante (44; 60) dans laquelle il (37) est éventuellement amené à réagir au moyen d'un dispositif d'allumage (48; 127; 177; 200; 236; 259; 287; 317) puis est évacué dans un canal d'échappement (15; 96; 293; 321), en tant que gaz final complètement brûlé (62), caractérisé par l'agencement, en vis-à-vis de la sortie du groupe de tubes (32; 111; 163; 184; 214; 260; 275; 304; 332; 350), d'une paroi de réflexion (46; 197; 198; 258; 318; surfaces 197; 198; surfaces coniques 228; 338) ayant pour effet de former dans la chambre de réaction une zone de gaz chaud, cela par réflexion et focalisation d'une onde de choc déclenchée par la quantité de gaz expulsée qu'elle précède, l'onde de choc et l'onde de gaz d'échappement qui la suit se rencontrant à l'intérieur de cette zone de gaz chaud, le mélange gazeux apte à réagir étant amené par le dispositif d'allumage (48; 127; 177; 200; 236; 259; 287; 317) à réagir dans la zone de gaz chaud à une température inférieure à la température de réaction du mélange gazeux, et la réaction s'effectuant, grâce à un canal de sortie (12) commandé par un piston (11) ou à une soupape d'échappement (92) d'un moteur à combustion (52), au rythme du changement de charge du moteur à combustion (52), alors que le canal d'échappement (12; 93) est fermé côté moteur, et par le fait que le gaz final complètement brûlé (62) est évacué de manière accélérée hors de la zone de gaz chaud, dans le canal d'échappement (15; 96; 293; 321), par une tuyère d'éjection (57; 57a; 135; 169; 199; 227; 251; 255; 284; 310; 310a; 312a; 337; 354) et par un trajet de tirage suivant (59; 136; 150; 175; 196; 235; 286; 314; 340).
  3. Réacteur de gaz d'échappement selon revendication 2,
    caractérisé par le fait que la paroi de réflexion (46; 121) est entourée par une partie hotte (45; 120) évasée en direction du groupe de tubes (32; 111), à laquelle succède en direction axiale une partie hotte cylindrique (56; 122), et par le fait que la chambre de réaction (trajet de réflexion 44; zone 60) est limitée essentiellement par la paroi de réflexion (45; 56; 120) et par la tuyère d'éjection (57; 135).
  4. Réacteur de gaz d'échappement selon revendication 2,
    caractérisé par le fait que la partie de l'enceinte du réacteur agencée à la suite du groupe de tubes (163; 214; 260; 275; 304; 352) est réalisée en tant que guide creux allongé (172; 238; 253; 286; 314; 361; 362) opérant en tant que tube pour oscillations, lequel est terminé en ses deux extrémités par des parois de réflexion (167, 174; 225, 235; 258, 261; 289, 294; 315, 318; 363, 364) (Fig. 5, 7, 8 à 10, 12).
  5. Réacteur de gaz d'échappement selon revendication 4,
    caractérisé par le fait que le guide creux (257, 253; 281, 286; 361, 362) est subdivisé, en tant que tube pour oscillations opérant en double, en deux portions axialement l'une à la suite de l'autre, par le fait que l'onde de choc et/ou la quantité de gaz d'échappement sont introduits obliquement dans la zone de transition des deux portions, et par le fait que le groupe de tubes (260; 275; 357; 358) entoure coaxialement au moins une portion du guide creux (Fig. 8, 9, 12).
  6. Réacteur de gaz d'échappement selon revendication 4 ou 5,
    caractérisé par le fait que le groupe de tubes (184). la paroi de réflexion (197, 198) et la tuyère d'éjection (199) sont agencés axialement l'un à la suite de l'autre (Fig. 6).
  7. Réacteur de gaz d'échappement selon l'une des revendications 4 à 6,
    caractérisé par le fait qu'un séparateur onde-gaz (173; 235; 237; 261; 288), avec parois de réflexion (174; 289; 315; 364) pour l'onde de choc et avec ouvertures (176; 290; 319) pour le gaz final complètement brûlé, est agencé à l'extrémité côté échappement du guide creux (172; 238; 253; 286; 314; 362).
  8. Réacteur de gaz d'échappement selon l'une des revendications 4 à 7,
    caractérisé par le fait que le canal de sortie (162; 331) bifurque dans le groupe de tubes (163; 332) dont les conduites de gaz brut (164; 333) en direction de la tuyère d'éjection (169; 337) située en aval sont dirigées obliquement (de manière divergente) vers l'extérieur et, à l'entrée dans la tuyère d'éjection (169; 337), débouchent dans des ouvertures de sortie du genre tuyère (168) entre lesquelles est agencé un élément de réflexion (166; 339) (fig. 5, 11).
  9. Réacteur de gaz d'échappement selon l'une des revendications 4 à 8,
    caractérisé par le fait qu'il est prévu à la sortie du canal de sortie (162; 180, 181; 241, 242; 301; 351) une paroi déflectrice à tracé oblique (165; 182; 243; 303) pour la transmision avec de faibles pertes de l'onde choc et/ou de la quantité de gaz d'échappement du canal de sortie (162; 180, 181; 241, 242; 301; 351) au groupe de tubes (163; 184; 260; 304) (Fig. 5, 6, 8, 10, 12).
  10. Réacteur de gaz d'échappement selon l'une des revendications 2 à 9,
    caractérisé par le fait qu'au moins un clapet de réglage (26; 99; 220; 309) est agencé dans les conduites d'introduction d'air (17; 21; 25; 21a; 98; 219; 308) pour le mélange d'addition d'air primaire ou le mélange complémentaire d'air secondaire, les clapets de réglage (26; 99; 220; 309) étant en liaison fonctionnelle avec une régulation du remplissage ou avec une régulation lambda du moteur à combustion (52) (Fig. 1 à 4, 7).
  11. Réacteur de gaz d'échappement selon l'une des revendications 2 à 10,
    caractérisé par le fait qu'un capteur de température (54) se trouvant en liaison fonctionnelle avec un dispositif (53) de dosage de combustible du moteur à combustion (52) est agencé dans la zone de gaz chaud. (Fig.1)
EP19850902449 1984-05-10 1985-05-10 Reacteur pour gaz d'echappement et procede de traitement des gaz d'echappement Expired - Lifetime EP0214974B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85902449T ATE60936T1 (de) 1984-05-10 1985-05-10 Abgasreaktor und verfahren zum behandeln von abgas.

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
DE3417275 1984-05-10
DE3417275 1984-05-10
DE3420158 1984-05-30
DE3420158 1984-05-30
BE260464 1984-07-20
BE2/60464A BE900193A (nl) 1983-08-20 1984-07-20 Zuigermotor met heen en weer bewegende of roterende zuiger uitgevoerde verbrandingsmotor.
DE19843434980 DE3434980A1 (de) 1983-11-24 1984-09-24 Als kolbenmotor (hub- oder rotationskolben) ausgefuehrte brennkraftmaschine
DE3434980 1984-09-24
DE19853511941 DE3511941A1 (de) 1985-04-01 1985-04-01 Als kolbenmotor (hub- oder rotationskolben) ausgefuehrte brennkraftmaschine
DE3511941 1985-04-01

Publications (2)

Publication Number Publication Date
EP0214974A1 EP0214974A1 (fr) 1987-03-25
EP0214974B1 true EP0214974B1 (fr) 1991-02-20

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EP19850902449 Expired - Lifetime EP0214974B1 (fr) 1984-05-10 1985-05-10 Reacteur pour gaz d'echappement et procede de traitement des gaz d'echappement

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EP (1) EP0214974B1 (fr)
AU (1) AU4300085A (fr)
WO (1) WO1985005405A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3521462C2 (de) * 1985-06-14 1993-10-21 Guenter J Britz Verfahren zur Beseitigung von Schadstoffen im Abgas von Verbrennungskraftmaschinen
DE102013001080B4 (de) 2013-01-23 2017-01-19 Audi Ag Verfahren zum Betreiben einer Antriebseinrichtung sowie entsprechende Antriebseinrichtung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3000178A1 (de) * 1980-01-04 1981-07-09 Hans Karl Dr. 7891 Küssaberg Leistritz Thermoreaktor
NL8402247A (nl) * 1983-08-20 1985-03-18 Leistritz Hans Karl Verdere ontwikkeling van het arbeidsproces van de als zuigermotor uitgevoerde verbrandingsmotor met een in de besturing van het gaswisselproces geintegreerde naverbranding.

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AU4300085A (en) 1985-12-13
EP0214974A1 (fr) 1987-03-25
WO1985005405A1 (fr) 1985-12-05

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