DE3332923C2 - Mixing device for preparing a fuel gas-air mixture for internal combustion engines - Google Patents

Mixing device for preparing a fuel gas-air mixture for internal combustion engines

Info

Publication number
DE3332923C2
DE3332923C2 DE3332923A DE3332923A DE3332923C2 DE 3332923 C2 DE3332923 C2 DE 3332923C2 DE 3332923 A DE3332923 A DE 3332923A DE 3332923 A DE3332923 A DE 3332923A DE 3332923 C2 DE3332923 C2 DE 3332923C2
Authority
DE
Germany
Prior art keywords
annular chamber
gas
engines
internal combustion
intake
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
Application number
DE3332923A
Other languages
German (de)
Other versions
DE3332923A1 (en
Inventor
Clodoveo 6718 Grünstadt Utili
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.)
UTILI FEDERICO C 6718 GRUENSTADT DE
Original Assignee
UTILI FEDERICO C 6718 GRUENSTADT DE
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 UTILI FEDERICO C 6718 GRUENSTADT DE filed Critical UTILI FEDERICO C 6718 GRUENSTADT DE
Priority to DE3332923A priority Critical patent/DE3332923C2/en
Publication of DE3332923A1 publication Critical patent/DE3332923A1/en
Application granted granted Critical
Publication of DE3332923C2 publication Critical patent/DE3332923C2/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/04—Gas-air mixing apparatus
    • F02M21/042—Mixer comprising a plurality of bores or flow passages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
    • F02M21/0209—Hydrocarbon fuels, e.g. methane or acetylene
    • F02M21/0212—Hydrocarbon fuels, e.g. methane or acetylene comprising at least 3 C-Atoms, e.g. liquefied petroleum gas [LPG], propane or butane
    • 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
    • F02B43/00—Engines characterised by operating on gaseous fuels; Plants including such engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/029—Arrangement on engines or vehicle bodies; Conversion to gaseous fuel supply systems
    • 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
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

Diese Erfindung beschreibt ein Verfahren und eine Vorrichtung, die besonders dazu geeignet ist, Verbrennungsmotoren mit Flüssiggas (Propan/Butan) zu betreiben. Sie besteht aus einer ringförmigen Kammer um den Ansaugkanal, wobei die Form des Querschnittes für den Ansaugkanal keine Rolle spielt. Das wesentliche Merkmal dieser Erfindung besteht darin, daß das verdampfte Flüssiggas parallel zum Luftstrom der Verbrennungsluft geführt wird. Dies wird dadurch erreicht, daß die ringförmige Kammer Austrittsöffnungen hat, die das Gas in der gewünschten Richtung lenken. Der Vorteil dieser Erfindung besteht darin, daß nicht nur Vergasermotoren, sondern besonders auch Einspritzmotoren nach dem neuen Verfahren einwandfrei arbeiten. Es wurde festgestellt, daß beim Einbau dieser Vorrichtung in Motoren - die entweder nach dem Vergaserprinzip oder nach dem Einspritzprinzip arbeiten - keinerlei Umbau oder Änderung in der Einstellung des Motors erforderlich machen. Messungen haben ergeben, daß die volle Leistung des Motors ohne Mehrverbrauch an Kraftstoff erhalten bleibt. Dies wird durch Abgasmessungen belegt, die beweisen, daß eine besonders vollständige Verbrennung des zugeführten gasförmigen Kraftstoffes erfolgt. Besonders wertvoll ist diese Erfindung dadurch, daß schädliche Abgase auf ein Minimum reduziert werden. Darüber hinaus braucht dieser Kraftstoff keinen Zusatz von Bleitetraäthyl, was diese besonders giftige Umweltverschmutzung vollständig vermeidet.This invention describes a method and a device which is particularly suitable for operating internal combustion engines with liquid gas (propane / butane). It consists of an annular chamber around the intake channel, whereby the shape of the cross-section does not play a role for the intake channel. The essential feature of this invention is that the vaporized liquid gas is guided parallel to the air flow of the combustion air. This is achieved in that the annular chamber has outlet openings which direct the gas in the desired direction. The advantage of this invention is that not only carburetor engines, but also injection engines in particular, work properly according to the new method. It has been found that when this device is installed in engines - which operate either according to the carburetor principle or according to the injection principle - no modifications or changes in the setting of the engine are necessary. Measurements have shown that the engine can maintain its full performance without consuming more fuel. This is proven by exhaust gas measurements, which prove that particularly complete combustion of the supplied gaseous fuel takes place. This invention is particularly valuable in that harmful exhaust gases are reduced to a minimum. In addition, this fuel does not require the addition of tetraethyl lead, which completely avoids this particularly toxic environmental pollution.

Description

1515th

Die Erfindüüg betrifft einen Gasmischeinsatz im Ansaugrohr einer Brennkraftmaschine zur Aufbereitung eines Brenngas-Luft-Gemisches stromauf der Hauptdrossel mit einer im Ansaugkanal konzentrisch angeordneten, ringförmigen Kammer.The invention relates to a gas mixing insert in the intake pipe an internal combustion engine for processing a fuel gas-air mixture upstream of the main throttle with an annular chamber arranged concentrically in the intake duct.

Derartige Einrichtungen sind in zahlreichen Ausführungen bekannt Sie sind aber meist kompliziert und aufwendig; außerdem muß man gegenüber Brennkraftmaschinen die mit flüssigen Brennstoffen betrieben werden, im Betrieb mit Brenngas eine Minderleistung von 10 bis 15% in Kauf nehmen.Such facilities are known in numerous designs, but they are usually complicated and elaborate; In addition, you have to operate with liquid fuels compared to internal combustion engines accept a reduction in performance of 10 to 15% when operating with fuel gas.

Aus der DE-OS 26 27 723 ist eine Vorrichtung bekannt bei der u.a. übt-r eine ringförmige Kammer Brenngas über eine Anzawl von Bohrungen quer zum Ansaugluftstrom im engsten Quei.chnitt eines Venturirohres in den Ansaugkanal gesaugt wird.From DE-OS 26 27 723 a device is known in the case of, inter alia, an annular chamber Fuel gas through a number of bores across the intake air flow in the narrowest cross-section of a Venturi tube is sucked into the intake duct.

Dieser bekannte Gasmischeinsatz geht davon aus, daß das Brenngas quer in eine beschleunigte Luftströmung gesaugt wird, um sich dann mit der Ansaugluft zu vermischen. Hierbei wird nicht immer ein homogenes Brennstoffluftgemisch erzeugt, wie es im Hinblick auf ein schadstoffarmes Abgas wünschenswert wäre.This known gas mixing insert is based on the fact that the fuel gas transversely into an accelerated air flow is sucked in to then mix with the intake air. This is not always a homogeneous one Generated fuel-air mixture, as it would be desirable in terms of a low-pollutant exhaust gas.

Aufgabe der Erfindung ist es eine Vorrichtung zu schaffen, die bei einfacher konstruktiver Ausgestaltung eine homogene Gemischzusammensetzung aus Brenngas und Luft ermöglicht und darüber hinaus zur alternativen Gemischbildung einer an sich mit flüssigen Brennstoff betriebenen Brennkraftmaschine einsetzbar ist.The object of the invention is to create a device which, with a simple structural design enables a homogeneous mixture of fuel gas and air and, moreover, to the alternative Mixture formation of an internal combustion engine operated with liquid fuel can be used.

Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Patentanspruches 1 gelöst.According to the invention, this object is achieved by the characterizing features of claim 1 solved.

Durch die besonders einfache Anordnung des Gasmischeinsatzes im Ansaugkanal der Brennkraftmaschine und die koaxiale Gaszuführung um den Hauptluftstrom herum, kann dieser Gasmischer ohne großen Aufwand bei der Umstellung von Motoren von flüssigem Brennstoff auf Gasbetrieb in den Ansaugkanal stromauf der Hauptdrossel eingesetzt werden. Außerdem haben Versuche an einem PKW-Motor gezeigt, daß im Leerlauf die Schadstoffemission auf bis zu V4 der normalen Werte einer mit flüssigem Brennstoff betriebenen Brennkraftmaschine zurückgehen, was auch auf einen hohen Ausbrenngrad des Brenngases schließen läßt.Due to the particularly simple arrangement of the gas mixer insert in the intake duct of the internal combustion engine and the coaxial gas supply around the main air flow, this gas mixer can be used in the intake duct upstream of the main throttle with little effort when converting engines from liquid fuel to gas operation. In addition, tests on a car engine have shown that when the engine is idling, the pollutant emissions are reduced to V 4 of the normal values of an internal combustion engine operated with liquid fuel, which also suggests a high degree of burnout of the fuel gas.

Im folgenden wird der Gegenstand des erfindungsgemäßen Gasmischeinsatzes kurz an Hand der Figur beschrieben. The subject of the gas mixing insert according to the invention is briefly described below with reference to the figure.

Die Figur zeigt zunächst einen Axialschnitt durch den Gasmischeinsatz. Ein zylindrisches Doppelrohrstück Hierzu 1 Blatt ZeichnungenThe figure initially shows an axial section through the gas mixing insert. A cylindrical piece of double pipe 1 sheet of drawings

Claims (2)

Patentansprüche:Patent claims: 1. Gasmischeinsatz im Ansaugrohr einer Brennkraftmaschine zur Aufbereitung eines Brenngas-Luft-Gemisches stromauf der Hauptdrosselldappe mit einer um den Ansaugkanal konzentrisch angeordneten, ringförmigen Kammer, dadurch gekennzeichnet, daß die ringförmige Kammer (5) Austrittsbohrungen(6)aufweist, die parallel um den Hauptluftstrom in den Ansaugkanal (7) münden.1. Gas mixing insert in the intake pipe of an internal combustion engine for preparing a fuel gas-air mixture upstream of the main throttle valve with a concentrically arranged around the intake duct, annular chamber, characterized in that the annular chamber (5) has outlet bores (6) parallel to the Main air flow into the intake duct (7). 2. Gasmischeinsatz nach Anspruch I1 dadurch gekennzeichnet, daß sich die ringförmige Kammer (5) stromab in einem koaxialen, inneren Wandteil im Ansaugkanal (7) fortsetzt, der die Gasströmung zunächst vom Ansaugluftstrom trennt.2. Gas mixing insert according to claim I 1, characterized in that the annular chamber (5) continues downstream in a coaxial, inner wall part in the intake duct (7) which initially separates the gas flow from the intake air flow. wird von einem Jnnenring 1 und einem Außenring 2 derart gebildet, daß ein Ringraum entsteht, der stromauf verschlossen Lst Ein Flansch am Inaenring 1 ist derart ausgebildet, daß eine Ringkammer 5 entsteht Der Flansch, der die Ringkammer 5 stromab begrenzt, hat über den Umfang gleichmäßig verteilt Bohrungen 6, die sich in den anschließenden offenen Ringraum öffnen, der das Brenngas zunächst parallel zum Ansaugluftstrom führt, um anschließend sich mit der Ansaugluft im Bereich 8 des Ansaugkanals 7 zu vermischen.is made up of an inner ring 1 and an outer ring 2 formed in such a way that an annulus arises, the upstream closed Lst A flange on the inner ring 1 is designed in such a way that an annular chamber 5 is created The flange, which limits the annular chamber 5 downstream, has bores 6 that are evenly distributed over the circumference open into the adjoining open annulus, which initially feeds the fuel gas parallel to the intake air flow leads to then deal with the intake air in the Mixing area 8 of the intake duct 7.
DE3332923A 1983-09-13 1983-09-13 Mixing device for preparing a fuel gas-air mixture for internal combustion engines Expired DE3332923C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3332923A DE3332923C2 (en) 1983-09-13 1983-09-13 Mixing device for preparing a fuel gas-air mixture for internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3332923A DE3332923C2 (en) 1983-09-13 1983-09-13 Mixing device for preparing a fuel gas-air mixture for internal combustion engines

Publications (2)

Publication Number Publication Date
DE3332923A1 DE3332923A1 (en) 1985-03-28
DE3332923C2 true DE3332923C2 (en) 1985-10-31

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DE3332923A Expired DE3332923C2 (en) 1983-09-13 1983-09-13 Mixing device for preparing a fuel gas-air mixture for internal combustion engines

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19635248A1 (en) * 1996-08-30 1998-03-05 Ficht Gmbh & Co Kg LPG engine
CN102493899A (en) * 2011-12-05 2012-06-13 北京理工大学 Flow guide sleeve type spiral mixed gas inlet device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL181516C (en) * 1976-05-26 1987-09-01 Tno Apparatus for supplying gaseous fuels, such as LPG or natural gas, to a combustion engine.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19635248A1 (en) * 1996-08-30 1998-03-05 Ficht Gmbh & Co Kg LPG engine
WO1998009060A1 (en) 1996-08-30 1998-03-05 Ficht Gmbh & Co. Kg Liquid gas engine
DE19635248C2 (en) * 1996-08-30 2001-05-23 Ficht Gmbh & Co Kg LPG engine
CN102493899A (en) * 2011-12-05 2012-06-13 北京理工大学 Flow guide sleeve type spiral mixed gas inlet device

Also Published As

Publication number Publication date
DE3332923A1 (en) 1985-03-28

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee