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WO1980002727A1 - Agencement pour l'amenee d'air supplementaire dans le canal d'aspiration d'une machine motrice brulant l'essence - Google Patents

Agencement pour l'amenee d'air supplementaire dans le canal d'aspiration d'une machine motrice brulant l'essence Download PDF

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Publication number
WO1980002727A1
WO1980002727A1 PCT/DE1980/000075 DE8000075W WO8002727A1 WO 1980002727 A1 WO1980002727 A1 WO 1980002727A1 DE 8000075 W DE8000075 W DE 8000075W WO 8002727 A1 WO8002727 A1 WO 8002727A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
valves
response
intake duct
valve
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.)
Ceased
Application number
PCT/DE1980/000075
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German (de)
English (en)
Inventor
H Duennwald
A Lindner
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
Publication of WO1980002727A1 publication Critical patent/WO1980002727A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F02M23/00—Apparatus for adding secondary air to fuel-air mixture
    • F02M23/04—Apparatus for adding secondary air to fuel-air mixture with automatic control
    • F02M23/08—Apparatus for adding secondary air to fuel-air mixture with automatic control dependent on pressure in main combustion-air induction system, e.g. pneumatic-type apparatus
    • F02M23/09—Apparatus for adding secondary air to fuel-air mixture with automatic control dependent on pressure in main combustion-air induction system, e.g. pneumatic-type apparatus using valves directly opened by low pressure
    • 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
    • F02M19/00—Details, component parts, or accessories of carburettors, not provided for in, or of interest apart from, the apparatus of groups F02M1/00 - F02M17/00
    • F02M19/01—Apparatus for testing, tuning, or synchronising carburettors, e.g. carburettor glow stands
    • 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 invention relates to a device for supplying additional air into the intake duct of gasoline internal combustion engines downstream of the carburetor, consisting of a pipe flange-like distributor intermediate piece arranged in the intake duct with an inflow duct for the additional air and an adjoining distributor connector with air outflow openings, the distributor connecting piece penetrating the intake duct and its longitudinal axis coinciding with a diameter of the intake duct, and with two valves arranged in parallel in the inflow duct and opening at different negative pressure values.
  • Such a known device serves the purpose of reducing the content of CO components and CH components in the exhaust gas of the machine. This reduction was achieved in that the cross-section of the distributor spigot had a very specific shape and that the air outlet openings contained in it were also arranged in a very specific manner.
  • two adjustable valves opening at different response pressure were provided in the device. Regardless of this, it is generally known that there have been numerous attempts to reduce fuel consumption noticeably. Every manufacturer endeavors to match the internal combustion engine and the carburetor to one another in such a way that the greatest possible output results in minimal fuel consumption. This adaptation has already been optimized to such an extent that all further attempts to save fuel neither lead to any noticeable savings nor remain without an adverse influence on the performance of the internal combustion engine.
  • the object of the invention was to further reduce the fuel consumption of an internal combustion engine, the carburettor of which is already optimally adjusted in series by the manufacturer, without loss of performance of the internal combustion engine.
  • the invention is based on the knowledge that this task can be solved by designing and setting a device of the type mentioned in the beginning in such a way that the valve of the device opening first opens onto one Response vacuum is set between 0.4 and 0.6 bar, while the response vacuum of the second, later opening valve is between 0.1 and 0.3 bar larger.
  • this optimization is achieved when the response vacuum of the valve that opens first is lower and the response vacuum of the valve that opens later is higher than an average value of the response vacuum, which in turn is between 5 and 15% higher than that only negative pressure value, which arises at idle when the operating temperature is warm and the internal combustion engine is set to a CO value below half a 1% CO exhaust gas content at the intake opening of the device.
  • a CO value of less than 1% was previously considered critical for the operation of the internal combustion engine, since such an adjustment often fears unfavorable effects on the machine itself and its operation. This includes, among other things, the fact that CH settings in the exhaust gas are far too high with such a setting.
  • an internal combustion engine can also be operated with a CO value below 1% without such disadvantages and difficulties being expected if, according to the invention, that CO value is used as a parameter for the selection of the average value of the An ⁇ serves vacuum, in which the CO content and CH content in the exhaust gas change in the same direction when the additional air supply is increased or decreased.
  • OV.PI This mean value to be used in the later determination of the response negative pressure of the two valves is particularly favorable when it is measured at the intake opening of the device while maintaining this very specific CO value.
  • the change in the same direction of the CO content and the CH content in the exhaust gas is only present in the case of an almost point-narrow range of CO values in the exhaust gas, while for other values the CO content and CH content change in opposite directions and in particular the CH values assume uncontrollable values.
  • the present invention further propose vorge, .that on the input side of the intake channel of the "Vor ⁇ direction a conical cross-sectional widening is formed, through which the inlet cross-section compared to the ei ⁇ tual cross-section of the intake passage is increased by about 10% to 20%.
  • the taper should be approximately between 40 and 50 ° Since the flow cross-section at the carburetor outlet and the cross-section of the intake duct of the device are essentially part of its length, the cross-sectional widening formed at the inlet of the intake duct of the device brings about a widening
  • the fuel droplets regularly present on the inner wall of the carburetor outlet nozzle impinge on the conical surface of the cross-sectional enlargement and atomize, so that this results in atomization of the mixture flow coming from the carburetor and a partial deflection thereof into the cross-sectional expansion the device
  • the penetrating fuel-air mixture becomes more homogeneous and the achievement of the desired fuel savings can be ensured better and more reliably.
  • the device can also be advantageous to provide the device with a heater for preheating the fuel-air mixture and / or the additional air, for example using the heat contained in the cooling water or an electric heater.
  • a heater for preheating the fuel-air mixture and / or the additional air, for example using the heat contained in the cooling water or an electric heater.
  • the mean value described above and used to set the respective response vacuum at the two valves can thus be used in a simple manner to carry out a presetting at both valves at the same time, in a more advantageous manner instead of the vacuum pressure existing as the response pressure in operation a corresponding overpressure is present on the other valve side.
  • the supply line for the compressed air opens into a mouthpiece which can be placed on the suction opening of the device and which is movably held and guided in the direction of the suction opening axis.
  • the mouthpiece can be connected to the piston of a piston-cylinder arrangement, to which a pressure of more than 0.6 bar is applied. This allows a particularly quick and simple presetting of the valves, since only the mouthpiece needs to be brought up to the suction opening of the expediently clamped device and placed on the opening, with a pressure greater than the actual setting pressure. so that a sealing contact of the mouthpiece with the suction opening is ensured.
  • the mean value of the response pressure is then set using an easily readable measuring instrument.
  • the spring setting can be calibrated such that, after the presetting has been completed, the respective desired negative pressure can be precisely specified by rotating the adjusting screw by a corresponding angular amount.
  • FIG. 1 shows a view of the device in the form of the distributor intermediate piece, seen in the flow direction of the fuel-air mixture
  • FIG. 2 shows a view of the device rotated by 90 relative to the illustration according to FIG. 1;
  • FIG. 3 shows a longitudinal section through the device according to FIG. 1;
  • Fig. 4 is a schematic representation of an arrangement used to adjust the device.
  • the intake duct of a gasoline internal combustion engine is cross-divided below the carburetor (not shown in the drawing) and the throttle valve and the ends of the intake duct obtained by the transverse division are each provided with a pipe flange.
  • a pipe flange-like or plate-shaped distributor intermediate piece 1 is arranged between these flanges and is connected gas-tight to the flanges of the suction duct by means of screws 3 guided through two fastening holes 2.
  • the distributor intermediate piece 1 has a blind bore 4 opening into a lateral surface of this piece, in the outlet region of which an internal thread 5 is provided, into which a through opening is provided having head screw 6 is screwed.
  • This screw is provided in the area of the free head end with a recess 7, in which a sieve 8 is supported, which is held in position by a snap ring 9.
  • a further blind bore 10 is arranged at a distance from this blind bore and parallel to it, which is closed at the outer end by a grub screw 11 and which is penetrated by two transverse bores 12 which are arranged at a distance from one another and which open into the blind bore 4.
  • These two bores are each provided with an internal thread 13 in the area of their outer ends, into each of which a head screw 14 is screwed and is secured against rotation by means of a lock nut 15.
  • the transverse bores 12 are offset in the region of their inner end and the offset transition is designed in the shape of a truncated cone.
  • This transition serves as a valve seat 16 for each ball 17, which is supported by means of a helical spring 18 at the end of the head screw 14 associated therewith.
  • the two helical springs 18 are designed with the same wire thickness and the same diameter, in FIG. 3 the helical spring 18 arranged in the upper transverse bore 12 is approximately twice the length of the lower helical spring 18.
  • the blind bore • 10 passed through by the transverse bores 12 opens with its inner end into a further transverse bore 19, the outer end of which is closed by means of a cap screw 20.
  • This transverse bore leads to a cylindrical opening 21 of the distributor intermediate piece 1 corresponding in diameter to the suction channel and is connected to a hollow web 22 bridging the opening 21 diametrically.
  • the imaginary plane lying in the longitudinal axis of the hollow web 22 and the axis of the intake duct encloses an angle of approximately 60 with the imaginary plane lying in this axis and the axis of rotation of the throttle valve.
  • the hollow web 22 has that of a drop, the round end face of which opposes the flow of the gas-air mixture. is directed.
  • two rows 24 and 25 of outlet openings are arranged, through which the supplied additional air can flow out into the opening 21 belonging to the intake duct.
  • the opening 21 is provided on its side adjoining the connecting piece 39 of a carburetor with a cross-sectional widening 23 through which an inclination of approximately 45 to the flow axis and pointing in the direction of the connecting piece 39 the surface part is formed.
  • the fuel-air mixture that sets through the opening 21 can expand into the cross-sectional widening 23 and fuel droplets, which will be regularly present on the inside of the connecting piece 39, can strike the conical surface part, so that these are atomized.
  • Each of the two valves thus has a ball 17 pressed onto the associated valve seat 16 by means of a helical spring 18 and a cap screw 14 with which the spring force can be adjusted.
  • the upper valve in FIG. 3 with the longer and thus stronger coil spring 18 is therefore designed for an opening later than the lower valve.
  • FIG. 4 Before the setting of these valves is described in more detail, an arrangement which is particularly suitable for carrying out the setting will be described with reference to FIG. 4.
  • This has a frame 26 in which the intermediate distributor piece can be held in a manner not shown here by appropriate clamping means.
  • the upper part of the frame 26 carries a cylinder 27, in the interior of which a piston 28 is arranged.
  • the latter can be reset to its starting position by means of a spring 29 and is connected via a piston rod 3o which penetrates the frame 26 to a mouthpiece 31 in which at least the outer layer on the underside is made of elastically deformable
  • air pressure of 0.65 bar is supplied, which in part reaches the cylinder 27 via a line 34 and serves to act on the piston 28 and to press the mouthpiece 31 against the sieve 8 in the recess 7.
  • the compressed air reaches a next measuring unit 36, the output side of which is connected to the supply line 32 and which at the same time serves to adjust the air pressure given off on the output side. Since the measuring unit 36 usually has a too coarse subdivision of the scale and the display accuracy is too low, a measuring instrument 38 for fine measurement is connected to the output side of the measuring unit 36 via a line 37.
  • the air pressure output is set to a value of 0.65 bar at the input measuring unit 33.
  • the piston 28 is therefore also subjected to the same pressure.
  • the setting is now made as follows by means of the measuring unit 36:
  • the intake pressure resulting from the setting described and the warm operating state was determined in advance at the entrance of the device. This pressure value was increased by 5 to 15% so that the exact mean value for the setting of the response negative pressure, which results in the range between 400 bar and 600 bar for the machine concerned and the associated carburetor, is available. If, for example, it is assumed that this mean value is 0.5 bar, the pressure value at the output of the measuring unit 36 will initially be set somewhat higher and the response position of the two valves set to this value. If the exact mean value for the response pressure is then specified, the two valves can simply be set to their response position. By means of the overpressure present on the pressure side of the balls 17, the suction-side vacuum present during operation is thus simulated.
  • the described arrangement for fine adjustment is now not required, provided that due to the known spring characteristics of the two bell-mouth springs 8, the angle is known by which the cap screws 14 have to be rotated for a specific increase or decrease in the final response pressure.
  • the fine adjustment is thus carried out in that, by means of a corresponding rotation, the response negative pressure of the lower, earlier responsive valve in FIG. is reduced by a value between 0, o5 and 0.1 bar, while the response pressure of the other valve is increased by such an amount that the difference between the two response pressure values remains in the range between 0.1 and 0.3 bar .
  • the device described here can of course also be an integral part of each carburetor without the design of an additional device having to be selected.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of The Air-Fuel Ratio Of Carburetors (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

L'invention vise a diminuer la consommation d'essence dans les machines motrices et concerne une piece intermediaire du distributeur (1) dans la conduite d'aspiration (4, 19) servant a l'amenee d'air supplementaire. L'agencement comprend un canal afferant (4, 19) pour l'air supplementaire et un distributeur (22) avec ouvertures pour sortie d'air (24, 25). Deux soupapes (17, 18) sont placees en parallele dans le canal afferant (17, 18) et s'ouvrent pour des valeurs de depression differentes. L'invention concerne aussi bien les valeurs de reglage de ces soupapes (17, 18) qu'un amenagement particulierement favorable pour leur reglage ainsi qu'un procede approprie de reglage de ces soupapes.
PCT/DE1980/000075 1979-05-25 1980-05-22 Agencement pour l'amenee d'air supplementaire dans le canal d'aspiration d'une machine motrice brulant l'essence Ceased WO1980002727A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792921203 DE2921203A1 (de) 1979-05-25 1979-05-25 Vorrichtung zum zufuehren von zusatzluft in den ansaugkanal von benzin-brennkraftmaschinen
DE2921203 1979-05-25

Publications (1)

Publication Number Publication Date
WO1980002727A1 true WO1980002727A1 (fr) 1980-12-11

Family

ID=6071670

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1980/000075 Ceased WO1980002727A1 (fr) 1979-05-25 1980-05-22 Agencement pour l'amenee d'air supplementaire dans le canal d'aspiration d'une machine motrice brulant l'essence

Country Status (6)

Country Link
EP (1) EP0029057A1 (fr)
DD (1) DD150923A5 (fr)
DE (1) DE2921203A1 (fr)
PL (1) PL224435A1 (fr)
SU (1) SU959639A3 (fr)
WO (1) WO1980002727A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996034194A3 (fr) * 1995-04-27 1997-02-20 Richard Nigel Bushell Clapet automatique pour collecteur d'admission d'un moteur a combustion interne
EP1039119A3 (fr) * 1995-04-27 2000-11-08 Richard Nigel Bushell Clapet d'admission d'air automatique
CN104153916A (zh) * 2013-05-13 2014-11-19 张普华 一种高效节能型内燃机自动调节供油机构及其流量控制方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3347545C2 (de) * 1983-12-30 1985-11-07 Uwe 5650 Solingen Eppenstein Vorrichtung zum Zuführen von Zusatzluft in den Ansaugkanal von Brennkraftmaschinen

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1420615A (en) * 1917-12-20 1922-06-20 Sidney S May Auxiliary air-inlet device for internal-combustion engines
US1623721A (en) * 1924-04-29 1927-04-05 Charles E Sturges Air intake for internal-combustion engines
FR629048A (fr) * 1927-02-12 1927-11-03 Procédé et installation pour l'alimentation des moteurs à explosions ou autres applications similaires
US3564580A (en) * 1969-12-29 1971-02-16 Dorado Research Corp Anti-pollution device
DE2361505A1 (de) * 1973-12-11 1975-06-19 Meyer Emile Tubiana Vorrichtung zum zufuehren von zusatzluft in den ansaugkanal von benzin-brennkraftmaschinen
GB1519584A (en) * 1975-07-11 1978-08-02 Mcfarlane J A fuel economiser device
US4167166A (en) * 1977-10-11 1979-09-11 Mileage Research, Ltd. Hot air vaporization system for an internal combustion engine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1420615A (en) * 1917-12-20 1922-06-20 Sidney S May Auxiliary air-inlet device for internal-combustion engines
US1623721A (en) * 1924-04-29 1927-04-05 Charles E Sturges Air intake for internal-combustion engines
FR629048A (fr) * 1927-02-12 1927-11-03 Procédé et installation pour l'alimentation des moteurs à explosions ou autres applications similaires
US3564580A (en) * 1969-12-29 1971-02-16 Dorado Research Corp Anti-pollution device
DE2361505A1 (de) * 1973-12-11 1975-06-19 Meyer Emile Tubiana Vorrichtung zum zufuehren von zusatzluft in den ansaugkanal von benzin-brennkraftmaschinen
GB1519584A (en) * 1975-07-11 1978-08-02 Mcfarlane J A fuel economiser device
US4167166A (en) * 1977-10-11 1979-09-11 Mileage Research, Ltd. Hot air vaporization system for an internal combustion engine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Revue Technique Automobile, Volume 33, No. 376, veroffentlicht im Marz 1978, (Boulogne, Billancourt), M.VALLERAND: "Alpha 2000" et "Castor 2001", siehe Seite 154, rechte Spalte. *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996034194A3 (fr) * 1995-04-27 1997-02-20 Richard Nigel Bushell Clapet automatique pour collecteur d'admission d'un moteur a combustion interne
EP1039119A3 (fr) * 1995-04-27 2000-11-08 Richard Nigel Bushell Clapet d'admission d'air automatique
EP1039120A3 (fr) * 1995-04-27 2000-11-08 Richard Nigel Bushell Clapet d'admission d'air automatique
CN1080824C (zh) * 1995-04-27 2002-03-13 理查德·奈杰尔·布谢尔 内燃机的进气歧管的进气阀
CN104153916A (zh) * 2013-05-13 2014-11-19 张普华 一种高效节能型内燃机自动调节供油机构及其流量控制方法

Also Published As

Publication number Publication date
SU959639A3 (ru) 1982-09-15
PL224435A1 (fr) 1981-06-19
EP0029057A1 (fr) 1981-05-27
DE2921203A1 (de) 1980-12-04
DD150923A5 (de) 1981-09-23

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