US3461850A - Installation for reducing the noxious exhaust gas emission of internal combustion engines - Google Patents

Installation for reducing the noxious exhaust gas emission of internal combustion engines Download PDF

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Publication number
US3461850A
US3461850A US664011A US3461850DA US3461850A US 3461850 A US3461850 A US 3461850A US 664011 A US664011 A US 664011A US 3461850D A US3461850D A US 3461850DA US 3461850 A US3461850 A US 3461850A
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United States
Prior art keywords
exhaust gas
internal combustion
suction pipe
installation
gas line
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
Application number
US664011A
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English (en)
Inventor
Kurt Oblander
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.)
Daimler Benz AG
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Daimler Benz AG
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Filing date
Publication date
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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
    • F02M33/00—Other apparatus for treating combustion-air, fuel or fuel-air mixture
    • F02M33/02—Other apparatus for treating combustion-air, fuel or fuel-air mixture for collecting and returning condensed fuel
    • 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
    • F02M3/00—Idling devices for carburettors
    • F02M3/08—Other details of idling devices
    • F02M3/10—Fuel metering pins; Nozzles
    • 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
    • F02M3/00—Idling devices for carburettors
    • F02M3/08—Other details of idling devices
    • F02M3/12—Passageway systems
    • 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
    • F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
    • F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
    • F02M31/04—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture
    • F02M31/06—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture by hot gases, e.g. by mixing cold and hot air
    • F02M31/08—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture by hot gases, e.g. by mixing cold and hot air the gases being exhaust gases
    • F02M31/087—Heat-exchange arrangements between the air intake and exhaust gas passages, e.g. by means of contact between the passages
    • 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

Definitions

  • the present invention relates to an installation for the reduction of the harmful exhaust gas emission of internal combustion engines installed primarily in motor vehicles, especially of motor vehicle internal combustion engines within the idling speed range, whereby the combustion air is controlled during normal operation by a throttle valve, and the idling air is supplied to the internal combustion engine in by-passing relationship to this throttle valve.
  • the idling air channel extends in direct proximity to the exhaust gas line for the purpose of ehating the idling air.
  • This can be realized by a simple location or displacement of the lines in corresponding mutual proximity.
  • the present invention prefers a solution according to which the idling air channel is combined with the exhaust gas line into a unitary casting. It would then be possible that the exhaust gas line surrounds the idling air channel in a casinglike manner.
  • a further construction of the present invention proposes that the pipe-shaped exhaust gas line accommodates in its walls the idling air channel as a further pipe, of course, of considerably smaller diameter.
  • a fuel preparation is achieved by the arrangement according to the present invention which is superior to the usual atomization of the fuel.
  • This preparation is particularly advantageous since it extends only over the idling speed range and consequently does not influence unfavorably the efficiency and therewith the output in the partial or full load range.
  • This effect can be further improved with internal combustion engines having fuel injection into the suction pipe if, according to a further feature of the present invention, the exhaust gas line serves additionally for the purpose of preheating a limited zone of each suction pipe connection which is disposed opposite the fuel injection nozzle. The fuel jet may then be injected into this limited zone possible at an inclined angle so that the fuel evaporates at least partly. As a result thereof, a still furtheer adjustment in the lean direction is also possible in the patrial load range without significantly reducing the peak output.
  • the idling air channel is connected at one end to the clean air side of the air filter and after the passage through the exhaust gas line extends approximately parallel to itself along the suction pipe connections and is provided thereat with corresponding aperture for the overflow or passage of the idling air into the suction pipe connections.
  • the configuration and designe of this overflow structure may be made in any manner known to a person skilled in the art. However, it will be particularly appropriate if also for that purpose all channels and lines are combined as unitary casting so that the overflow apertures are constituted by bores in the walls between the idling air channel and the suction pipe connections.
  • An effective decrease of the harmful exhaust gas emissions can be achieved by the present invention in the hot running and idling speed range. Additionally, the arrangement according to the present invention is very simple from a constructive point of view. The adjustment of the idling air can take place in any desired, known manner.
  • Another object of the present invention resides in an installation for the reduction of the noxious exhaust gas emissions of internal combustion engines which permits an improved performance, not only by a more lean adjustment of the fuel mixture but additionally by a better fuel preparation.
  • a further object of the present invention resides in an installation for the reduction of harmful exhaust gas emissions which is superior as regards the fuel preparation than the customary atomization of the fuel.
  • a still further object of the present invention resides in the provision of an installation for the reduction of the emission of harmful exhaust gases which is so constructed and arranged as to avoid any unfavorable influence with respect to the output in either the partial or full load range.
  • Still a further object of the present invention resides in an installation for the reduction of the emission of harmful exhaust gases which makes it possible to adjust the fuel mixture still more lean in the partial load range without significantly reducing the peak performance of the engine.
  • Another object of the present invention resides in an installation of the type described above which is simple in construction, facilitates assembly and disassembly and easy to adjust for proper operation.
  • FIGURE 1 is a schematic view of one installation in accordance with the present invention.
  • FIGURE 2 is a partial cross-sectional view through one embodiment according to the present invention, on an enlarged scale, and showing certain details of the installation of the present invention.
  • FIGURE 3 is a plan view on the detail of FIGURE 2.
  • reference numeral designates therein a conventional injection-type internal combustion engine to which the combustion air is supplied through individual suction pipe connections 11, combined in a pair-wise manner and leading to a common suction air intake manifold 12.
  • the inlet into this air inlet manifold 12 is controlled by a throttle valve 13 which can be actuated in a conventional manner from the gas pedal 14 simultaneously with the injection pump 15.
  • An air filter 16 is arranged upstream of the throttle valve 13 in a conventional manner.
  • the injection nozzles 17 are supplied with fuel by means of the injection pump which are arranged in the suction pipe connections 11.
  • the exhaust gases enter from the cylinders into the exhaust gas line 18 which leads to the exhaust muffler, etc., of conventional construction (not shown).
  • An idling air channel 19 branches off from the clean air side of the air filter 16 which extends over the entire length of the cylinder block in direct proximity to the itself in a further section 1912. Apertures are provided in this section 1912 to be described more fully hereinafter with reference to FIGURE 2through which the idling air can pass over into the suction pipe connections 11.
  • a regulating screw 20 is provided upstream of the pipe section 19b by means of which the idling air can be adjusted. Upstream thereof a channel 21 branches off which is intended for the air under hot running operation.
  • the exhaust gas line 18 extends directly adjacent the cylinder heads (not shown in detail) underneath the suction pipe connections 11. Both are combined into a unitary casting so that by a limited zone 23 of the suction pipe connection is heated by the separating wall 22. This zone 23 is disposed opposite the injection nozzle 24 which injects the fuel jet obliquely against this wall 22 within the zone 23.
  • the idling air channel 19 is cast into the wall of the exhaust gas line 18 so that a good preheating is also achieved thereat.
  • the counter-section 19b of the idling air channel is cast into the walls of the suction pipe connections 11 so that, therefore, all the parts are combined into a unitary casting.
  • the reversing section 19a and/or the connecting or end pieces may be inserted as separate pipe pieces.
  • Apertures 26 are provided in the wall 25 between the counter-section 19b and the suction pipe connections 11 through which the idling air passes over into the suction pipe connections 11.
  • suction pipe connecting means leading to the engine cylinder are provided, and wherein said exhaust gas line means additionally serves for the preheating of a predetermined zone of the suction pipe connecting means, said zone being disposed substantially opposite the fuel injection nozzle means.
  • suction pipe connecting means leading to the engine cylinder are provided, and wherein said exhaust gas line means additionally serves for the preheating of a predetermined zone of the suction pipe connecting means, said zone being disposed substantially opposite said fuel injection nozzle means.
  • the internal combustion engine includes a common intake manifold, suction pipe connecting means connecting said intake manifold with the engine cylinders, said exhaust gas line means extending directly adjacent the cylinder heads underneath the suction pipe connecting means, and the idling air channel means extending along the lower side of the exhaust gas line means over the entire length of the cylinder block.
  • the idling air channel means is operatively connected at one end to the clean air side of an air filter means and after passing through the exhaust gas line means, is provided with a reversing section and a counter section extending back upon itself substantially parallel to itself along the suction pipe connecting means, said counter section being provided with aperture means for the passage of the idling air into the suction pipe connecting means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
US664011A 1966-09-02 1967-08-29 Installation for reducing the noxious exhaust gas emission of internal combustion engines Expired - Lifetime US3461850A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0051002 1966-09-02

Publications (1)

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US3461850A true US3461850A (en) 1969-08-19

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US664011A Expired - Lifetime US3461850A (en) 1966-09-02 1967-08-29 Installation for reducing the noxious exhaust gas emission of internal combustion engines

Country Status (3)

Country Link
US (1) US3461850A (fr)
DE (2) DE1576519A1 (fr)
GB (1) GB1154813A (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3554174A (en) * 1969-07-07 1971-01-12 Dynatech Corp Dual circuit induction system
US3685503A (en) * 1967-09-04 1972-08-22 Petrol Injection Ltd Fuel supply systems
US3972314A (en) * 1973-10-03 1976-08-03 Robert Bosch G.M.B.H. Fuel injection system
US4253441A (en) * 1978-03-22 1981-03-03 Nissan Motor Company, Limited Fuel supply system for multi-cylinder engine equipped with fuel injector
DE3104158A1 (de) * 1980-02-06 1982-01-07 Nippon Soken Inc., Nishio, Aichi "brennstoffverdampfer fuer brennkraftmaschine"
DE3151706A1 (de) * 1981-12-29 1983-07-07 Central'nyj naučno-issledovatel'skij i konstruktorskij institut toplivnoj apparatury avtotraktornych i stacionarnych dvigatelej, Leningrad Brennstoffsystem eines verbrennungsmotors mit verdampfung des eingespritzten brennstoffs
US5050571A (en) * 1990-02-26 1991-09-24 Constantin Daniels Diesel fuel conversion means for spark-ignition engines
DE4313849A1 (de) * 1992-04-27 1993-10-28 Mitsubishi Electric Corp Kraftstoffzufuhrgerät für einen Verbrennungsmotor
WO2008049147A1 (fr) 2006-10-24 2008-05-02 David Littlewood Johnson Système de distribution de carburant et d'admission pour moteur à piston
US20120192395A1 (en) * 2011-01-26 2012-08-02 GM Global Technology Operations LLC Installation aid for a ventilation nozzle and a ventilation duct of a motor vehicle, ventilation nozzle, ventilation duct, and dashboard

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2429902A1 (fr) * 1978-04-27 1980-01-25 Lenz Hans Dispositif de formation du melange pour moteurs a combustion interne
FR2519379A1 (fr) * 1982-01-07 1983-07-08 Ts K Insti Dispositif d'alimentation d'un moteur a combustion interne avec evaporation du combustible injecte
DE3518493A1 (de) * 1985-05-23 1986-11-27 Daimler-Benz Ag, 7000 Stuttgart Abgasrueckfuehrleitung
GB2305215A (en) * 1995-09-13 1997-04-02 Rover Group Spark ignition engine air induction and fuel injection system
DE19932792A1 (de) * 1999-07-14 2001-01-18 Volkswagen Ag Brennkraftmaschine mit Abgasrückführung und Verfahren zur Abgasrückführung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2102476A (en) * 1936-01-03 1937-12-14 Solex Neuillysur Seine Sa Floatless carburetor
US2252972A (en) * 1939-08-23 1941-08-19 Grevas Steve Fuel heating attachment
US3145699A (en) * 1962-01-22 1964-08-25 Carl F High Fuel injection engine
US3211139A (en) * 1963-02-05 1965-10-12 Daimler Benz Ag Internal combustion engine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2102476A (en) * 1936-01-03 1937-12-14 Solex Neuillysur Seine Sa Floatless carburetor
US2252972A (en) * 1939-08-23 1941-08-19 Grevas Steve Fuel heating attachment
US3145699A (en) * 1962-01-22 1964-08-25 Carl F High Fuel injection engine
US3211139A (en) * 1963-02-05 1965-10-12 Daimler Benz Ag Internal combustion engine

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3685503A (en) * 1967-09-04 1972-08-22 Petrol Injection Ltd Fuel supply systems
US3554174A (en) * 1969-07-07 1971-01-12 Dynatech Corp Dual circuit induction system
US3972314A (en) * 1973-10-03 1976-08-03 Robert Bosch G.M.B.H. Fuel injection system
US4253441A (en) * 1978-03-22 1981-03-03 Nissan Motor Company, Limited Fuel supply system for multi-cylinder engine equipped with fuel injector
DE3104158A1 (de) * 1980-02-06 1982-01-07 Nippon Soken Inc., Nishio, Aichi "brennstoffverdampfer fuer brennkraftmaschine"
DE3151706A1 (de) * 1981-12-29 1983-07-07 Central'nyj naučno-issledovatel'skij i konstruktorskij institut toplivnoj apparatury avtotraktornych i stacionarnych dvigatelej, Leningrad Brennstoffsystem eines verbrennungsmotors mit verdampfung des eingespritzten brennstoffs
US5050571A (en) * 1990-02-26 1991-09-24 Constantin Daniels Diesel fuel conversion means for spark-ignition engines
DE4313849A1 (de) * 1992-04-27 1993-10-28 Mitsubishi Electric Corp Kraftstoffzufuhrgerät für einen Verbrennungsmotor
WO2008049147A1 (fr) 2006-10-24 2008-05-02 David Littlewood Johnson Système de distribution de carburant et d'admission pour moteur à piston
US20120192395A1 (en) * 2011-01-26 2012-08-02 GM Global Technology Operations LLC Installation aid for a ventilation nozzle and a ventilation duct of a motor vehicle, ventilation nozzle, ventilation duct, and dashboard
US9139071B2 (en) * 2011-01-26 2015-09-22 GM Global Technology Operations LLC Installation aid for a ventilation nozzle and a ventilation duct of a motor vehicle, ventilation nozzle, ventilation duct, and dashboard

Also Published As

Publication number Publication date
DE1526519A1 (fr)
GB1154813A (en) 1969-06-11
DE1576519A1 (de) 1970-02-19

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