DE2532529A1 - IC engine after burner unit - has combustion chamber with vibration reflecting walls, ring chamber varied directional pipe is group connected - Google Patents

IC engine after burner unit - has combustion chamber with vibration reflecting walls, ring chamber varied directional pipe is group connected

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Publication number
DE2532529A1
DE2532529A1 DE19752532529 DE2532529A DE2532529A1 DE 2532529 A1 DE2532529 A1 DE 2532529A1 DE 19752532529 DE19752532529 DE 19752532529 DE 2532529 A DE2532529 A DE 2532529A DE 2532529 A1 DE2532529 A1 DE 2532529A1
Authority
DE
Germany
Prior art keywords
combustion chamber
exhaust gas
pipes
burner unit
chamber
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
DE19752532529
Other languages
German (de)
Inventor
Hans Karl Dr Leistritz
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19752532529 priority Critical patent/DE2532529A1/en
Publication of DE2532529A1 publication Critical patent/DE2532529A1/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10Exhaust 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
    • F01N3/24Exhaust 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
    • F01N3/26Construction of thermal reactors
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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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 Silencers (AREA)

Abstract

After-burner unit for internal combustion engines with a combustion chamber limited by vibration reflecting walls, in which either the flow upwards or the flow downwards wall-limited combustion chamber part (16) is enclosed by a ring chamber (14) into which the treated exhaust gas flows after passing through an air blower cooled cooling section (15). After a change in direction, the exhaust gas flows out into atmosphere via a group of pipes (19). The ring chamber (14) acts as a connection between the groups of pipes (19) which flow in various directions. This enables the outlet direction of exhaust gas and the location of the after burner in vehicle design to be resolved, and the gas flow speed drop to be either reduced or obviated.

Description

Patentanmeldung mit der Bezeichnung "Ringraum als auslaßseitiges Konstruktionselement bei Nachverbrennungsanlagen".Patent application with the designation "Annular space as an outlet-side structural element in post-combustion plants ".

Beschreibung Die konstruktive Gestaltung des auslaßseitigen Gasführungsraumes einer NachverbrennungÔanlage tent nicht unter den einfachen Bedingungen stationärer Feuerungsanlagen, bei denen ein vertikal aufgestelltes Rohr ideale bedingungen für den davor gelegenen Feuerungsvorgang angibt. Bei Nachverbrennungsanlagen für Brennkraftmaschinen, welche z.B. Fahrzeuge antreiben, ist in der Regel die vertikale Position des Auslaßrohres ebenso wenig realisierbar wie die ideale Länge. Da sich indessen herausstellt, daß gewisse Eigengesetztlichkeiten des Strömungsablaufs in dem Schlußabschnitt einer Nachverbrennungsanlage, bei Schornsteinen als sog. Zug bekannt, von ganz besonderer Bedeutung bind für die Qualität und die Kontinuität der Nachverbrennung insbesondere bei ständig wechselndtn betriebsbedingungen der Brennkraftmaschine1 war es geboten1 hierfür spezielle Konstruktionselemente zu entwickeln, die mit den realen Gegebenheiten kleiner Kompaktanlagen ohne jede größere Längserstreckung die gewünschten ErgebnIsse erreichen. Description The structural design of the gas duct on the outlet side an afterburning plant cannot be more stationary under the simple conditions Combustion systems in which a vertically installed pipe is ideal for indicates the firing process in front of it. In afterburning systems for internal combustion engines, which drive vehicles, for example, is usually the vertical position of the exhaust pipe just as impossible to achieve as the ideal length. Since, however, it turns out that certain peculiarities of the flow in the final section of a Afterburning system, known as a so-called draft in chimneys, is very special Significance binds to the quality and the continuity of the afterburning in particular With constantly changing operating conditions of the internal combustion engine1 it was necessary1 for this purpose to develop special construction elements that match the real conditions small compact systems without any major longitudinal extension the desired results reach.

Zur Lösung dieser Aufgabe wird mit der vorliegenden Erfindung als Konstruktionselement ein Ringraum vorgelegt, der das Verbindungsstück zwischen Rohren bzw. Rohrgruppen, die insbesondere naan verschiedenen Richtungen fluchten, dient. Es wird damit nicht nur das Problem des Richtungswechsels gelöst, sondern gleichzeitig in akustischer und in thermischer Hinsicht Wirkung erzielt. Vor allem läßt sich mit diesem Konstruktionselement das Absinken der Strömungsgeschwindigkeit, das immer mit Zugverlust gleichbedeutend ist, vermeiden bzw. äußerst verringern.To solve this problem is with the present invention as Construction element presented an annulus, which is the connecting piece between pipes or tube groups that are in particular aligned in different directions. It not only solves the problem of changing direction, but at the same time achieved an acoustic and thermal effect. Above all, can with this construction element the decrease in flow velocity, that always is synonymous with loss of tension, avoid or extremely reduce.

Dir beiliegende Figur 1 zeigt eine Umkehrspülungsbrennkammer i6 mit einem hineinragenden Brennrohr 1, in welchem die Zusammenführung von Abgas (4/3/24) und Zusatzluft (6/7/11/13/5/10) stattfindet. Aus einem Sammelraum 18 tritt das nachverbrannte Abgas in einige Rohre (15/20) ein, die von einer Gebläseluftkühlstrecke 7 umspült sind. Sie münden in einen Ringraum 14, aus dem ein Austrittsrohr 19 herausführt, das gegenüber den eintretenden Rohren eine Richtungsänderung um 90° besitzt. Die eiglaufenden Rohre (15,2O,23) haben ihren Auslauf etwa in der Ebene der Wandung 2f. Sind sie gleichmässig angeordnet, werden niemals mehr als zwei Rohre die gleiche Entfernung zum Rohr 19 aufweisen. Es bildet sich eine Kette einander nachlaufender Teilströme mit Strömungsgeschwindigkeit da der Geschwindigkeitsabfall vermeiden wurde, der in krasser Weise einträte, wenn die Wandungen 22 und 27 ein großes Leervolumen umgrenzen würden. Dadurch aber, daß sich im mittleren Teil die Brennkammer 16 befindet, bleibt nur ein schmaler Ringraum, der den Geschwindigkeitsabfall in Grenzen hält. Hinzu kommt die akustische Dämpfungswirkung, da die Wandung 26 aus bochblec.: gefertigt ist, das ein Isolationsmaterial haltert.Die beiliegende Figur 2 zeigt den Ringraum als Ummantelung des stromaufwärtigen Teiles einer Nachbrennkammer 161 und zwar der Zusatzluftvorwärmkammer 13. Die beiden Schemazeichnungen unterscheiden sich dadurch, daß die Figur 1, eine Gegenstromnachverbrennungskammer nach österreichischem Patent 248802 darstellend, den Ringraum als stromabwärtige Ummantelung der Brennkammer zeigt, während die Figur 2 dies hinsichtlich ihres stromaufwärtigen Teiles anwendet. In beiden Fällen befinden sich neben den Abgaskühlrohren auch die Druckausgleichsrohre 25 mit ihren Auslaßöffnungen im Ringraum 14 bzw. dem Sammelrohr 19.Enclosed figure 1 shows a reverse scavenging combustion chamber with i6 a protruding combustion tube 1, in which the merging of exhaust gas (4/3/24) and additional air (6/7/11/13/5/10) takes place. The post-burned material emerges from a collecting space 18 Exhaust gas enters some pipes (15/20) around which a fan air cooling section 7 flows are. They flow into one Annular space 14 from which an outlet pipe 19 leads out, the opposite of the entering pipes a change of direction 90 °. The incoming pipes (15, 20, 23) have their outlet approximately in the plane the wall 2f. If they are evenly arranged, there will never be more than two pipes have the same distance from the pipe 19. A chain is formed with each other trailing partial flows with flow velocity because the velocity drop was avoided, which would occur in a blatant manner if the walls 22 and 27 a would delimit large empty volumes. But because in the middle part the Combustion chamber 16 is located, only a narrow annulus remains, which reduces the speed drop keeps within limits. In addition, there is the acoustic damping effect, since the wall 26 made of bochblec .: which holds an insulation material Figure 2 shows the annular space as a casing of the upstream part of an afterburning chamber 161 namely the auxiliary air preheating chamber 13. The two schematic drawings distinguish characterized in that Figure 1, a countercurrent post-combustion chamber according to Austrian U.S. Patent 248802 showing the annulus as the downstream jacket of the combustor shows, while FIG. 2 applies this with regard to its upstream part. In both cases there are also the pressure equalization pipes in addition to the exhaust gas cooling pipes 25 with their outlet openings in the annular space 14 or the collecting pipe 19.

Claims (2)

Patentansprüche Claims Nachverbrennungsanlage von Brennkraftmaschinen mit einer von Schwingungsreflexionswänden begrenzten Brennkammer gemäß österreichischem Patent Nr.248802 Anspruch 1 bzw. schweizerischem Patent Nr.441867 Anspruch 1 dadurch gekennzeichnet, daß entweder der stromabwärtige oder der stromaufwärtige wandbegrenzte Brennkammerteil (16) durch einen Ringraum (14) ummantelt ist, in welchen das nachverbrannte Abgas nach Durchlaufen einer gebläseluftgekühlten Kühlstrecke (15) einläuft und nach Richtungswechsel über ein Rohr bzw. eine Rohrgruppe (19) in die freie Atmosphäre ausläuft.Post-combustion system of internal combustion engines with one of vibration reflection walls limited combustion chamber according to Austrian patent No. 248802 claim 1 or Swiss Patent No. 441867 claim 1 characterized in that either the downstream or the upstream wall-delimited combustion chamber part (16) through an annular space (14) is encased in which the afterburned exhaust gas after passing through a fan-air-cooled Cooling section (15) enters and after a change of direction via a pipe or a group of pipes (19) leaks into the open atmosphere. 2. Ringraum gemäß Anspruch 1 dadurch gekennzeichnet, daß die einlaufende Rohrgruppe ein System von Abgaskühlrohren gemäß P 2329824 darstellt.2. Annular space according to claim 1, characterized in that the incoming Tube group represents a system of exhaust gas cooling tubes according to P 2329824.
DE19752532529 1975-07-21 1975-07-21 IC engine after burner unit - has combustion chamber with vibration reflecting walls, ring chamber varied directional pipe is group connected Pending DE2532529A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19752532529 DE2532529A1 (en) 1975-07-21 1975-07-21 IC engine after burner unit - has combustion chamber with vibration reflecting walls, ring chamber varied directional pipe is group connected

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752532529 DE2532529A1 (en) 1975-07-21 1975-07-21 IC engine after burner unit - has combustion chamber with vibration reflecting walls, ring chamber varied directional pipe is group connected

Publications (1)

Publication Number Publication Date
DE2532529A1 true DE2532529A1 (en) 1977-02-10

Family

ID=5952041

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19752532529 Pending DE2532529A1 (en) 1975-07-21 1975-07-21 IC engine after burner unit - has combustion chamber with vibration reflecting walls, ring chamber varied directional pipe is group connected

Country Status (1)

Country Link
DE (1) DE2532529A1 (en)

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