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EP0013842A1 - Vorrichtung zur Regelung des Luft/Brennstoffverhältnisses des von einem Vergaser hergestellten Gemisches beim Übergang von Leerlauf auf Normalbetrieb - Google Patents

Vorrichtung zur Regelung des Luft/Brennstoffverhältnisses des von einem Vergaser hergestellten Gemisches beim Übergang von Leerlauf auf Normalbetrieb Download PDF

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Publication number
EP0013842A1
EP0013842A1 EP79400331A EP79400331A EP0013842A1 EP 0013842 A1 EP0013842 A1 EP 0013842A1 EP 79400331 A EP79400331 A EP 79400331A EP 79400331 A EP79400331 A EP 79400331A EP 0013842 A1 EP0013842 A1 EP 0013842A1
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EP
European Patent Office
Prior art keywords
idle
air
well
calibrator
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
EP79400331A
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English (en)
French (fr)
Inventor
Claude Sennely
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
Priority claimed from FR7832324A external-priority patent/FR2441731A1/fr
Priority claimed from FR7912234A external-priority patent/FR2456855A1/fr
Application filed by Individual filed Critical Individual
Publication of EP0013842A1 publication Critical patent/EP0013842A1/de
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
    • 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
    • F02M3/09—Valves responsive to engine conditions, e.g. manifold vacuum

Definitions

  • the invention relates to a device for regulating the richness of the fuel mixture produced by the supply carburetor of an internal combustion engine and controlled ignition during the transitions between the idle speed and normal running, and in particular when the butterfly masks or unmasks a port of progressiveness connecting the carburetor chamber to the idle well.
  • This idling device comprises a well made in the body of the carburetor, at the top of which open a nozzle of air called calibrator and an idling jet, generally supplied with main jet bypass; the bottom of the idle well communicates with the carburetor chamber through a hole opening below the butterfly valve formed and the passage section of which is controlled by a screw-point at the adjustment of the mixing flow, and in corollary manner of its richness.
  • This vi3 is regulated so that the engine receives a mixture of medium richness at idle.
  • the debris on the one hand is relatively low since the engine rotates slowly, and on the other hand is mainly located at the throttle level.
  • the main jet of the carburetor cannot therefore come into play and the engine must be supplied by the idling device alone.
  • the mixing flow allowed by the adjusting screw is insufficient under these conditions, there is provided between the idle well and the carburetion chamber a free communication established by one or more orifices called progressivity or bypass which come into play as soon as the throttle discovers them, thereby providing the engine with additional mixing flow.
  • the auxiliary device is therefore subjected to a vacuum which increases firstly to a maximum value, obtained when the progressiveness produces its full effect, then decreases until '' to a negligible value as soon as the throttle is wide open and the pressure drop in the gas stream occurs mainly at the nozzle.
  • the air calibrator is therefore the site of very variable pressure losses, the speed of the air flow passing through it and consequently the flow of fuel sucked into the idle jet vary considerably and not proportional, not only because of the large difference in the specific masses of the two fluids concerned, but also because of the intrinsic properties of the calibrator-nozzle assembly. This results in additional causes of non-linearity of operation of the device.
  • the present invention aims to achieve a regulating device capable of ensuring a near-perfect correction of the richness of the mixture supplied to the engine during the entire transition phase between the idle speed and normal running, taking into account all the desirable operating parameters, by selective and controlled admission of an air flow or other additional gas acting by dynamic effect to correct the non-linear behavior of the calibrator-nozzle assembly of the idling circuit at partial loads.
  • the regulating device is essentially characterized in that it comprises a semi-parallel circuit for admitting air or other gas, which opens into the idle well downstream of the associated calibrator and nozzle but upstream of the idle and progressive openings connecting it to the carburetor chamber, this circuit comprising a raglage member whose passage section is controlled by at least one of the engine operating parameters in order to positively modulate the relative depression prevailing in the idle well, and consequently the air flow passing through the calibrator and therefore the flow of fuel sucked in by the nozzle, thus maintaining the richness of the mixture supplied to the engine substantially equal to its optimum value during the aforementioned transitions.
  • the air or gas flow admitted into the idle well through this device essentially serves as an agent or tool for dynamically controlling the behavior of the calibrator-nozzle assembly by acting on the vacuum in the idle shaft.
  • the butterfly opens and unmasks the openings of progressiveness, the strong depression prevailing in the intake manifold is freely transmitted inside the idle well.
  • the mixing flow rate originally limited by the section of the idle orifice controlled by the wealth screw, then suddenly increases to increase the engine speed until the main carburetion system is started.
  • the idling system designed to operate under a low depression in the well reacts in a non-linear manner when it is subjected to high depressions (a few hundred grams), the air calibrator being faster saturated than the idle jet, whose fuel flow then increases faster than the air flow from the calibrator. It is therefore during this transitional phase that the richness of the mixture is highest, as shown by the analyzes of the pollutants emitted during a standardized operating cycle.
  • the device according to the invention makes it possible to effectively control the richness of the mixture supplied during this phase, thanks to the choice of the air or gas injection point (a parallel circuit with the calibrator but in series with the idle orifices and progressiveness) and to the controlled modulation of the additional flow injected, which make it possible to reduce the relative vacuum in the idle well and thus subject the calibrator-nozzle assembly to operating conditions such that the flow of fuel sucked is less for a unchanged final mixing flow.
  • the admission of air or gas provided for this purpose by the device of the invention can be carried out by materially different but topologically equivalent routes, depending on whether this device constitutes an adaptation to an existing carburetor or else is integrated into a new one. carburetor during its conception.
  • the injection can conveniently be done through the wealth screw specially arranged for this purpose, or even by passages provided for example in an isolation flange separating the main body of the carburetor from its foot including the butterfly , or else under a judiciously fitted one-piece calibrator-nozzle assembly.
  • the passage section of the circuit is at any point at least equal to that of its adjusting member at full opening. It is above all essential that the effective passage section of this member be modifiable according to a predetermined law as a function of the combination of the operating parameters of the engine taken into account.
  • the adjusting member can be provided with a movable or deformable shutter member - for example and respectively a valve or a diaphragm, a needle shaped to a flattened sleeve - whose displacement or deformation is effected by the action of mechanical, pneumatic and / or electromechanical control means coupled to mobile members, fluid circuits and / or sensors translating the parameters to be taken into account.
  • a movable or deformable shutter member for example and respectively a valve or a diaphragm, a needle shaped to a flattened sleeve - whose displacement or deformation is effected by the action of mechanical, pneumatic and / or electromechanical control means coupled to mobile members, fluid circuits and / or sensors translating the parameters to be taken into account.
  • These parameters can be combined by any appropriate internal means - for example the regulation law specific to the regulating member - or external, such as a simple linkage or a differential cylinder, and in particular using a microprocessor programmable
  • the inverted carburetor with single body shown schematically in Figures 1 and 3 essentially comprises a tubular body of light alloy delimiting a vertical carburation chamber 10 , in which are arranged from upstream to downstream (or from top to bottom in the drawing) a nozzle 11 forming a venturi around an axial assembly 12 for suction and spraying of fuel coming from a conduit 13 of the main nozzle and the constant-level tank (name shown), then a butterfly 14 carried by a transverse axis 15 coupled to the accelerator pedal.
  • an idle well 20 is arranged, comprising from top to bottom an air nozzle or calibrator 21, an idle jet 22 supplied by a channel 23 connected in bypass to the conduit 13 (said carburetor monojet), and finally a progressive opening 24 and an idle opening 25 which both open into the carburetor chamber 10, respectively on either side of the butterfly 14 in the closed position.
  • the passage section of the idle orifice 25 is controlled by an adjusting screw 30.
  • the arrangement of the carburetor described and illustrated is conventional, and its operation well known: the rotation of the engine creates a depression in its intake manifold 16, at the end of which the carburetor is mounted.
  • this depression induces a high flow of air sucked into the atmosphere - and therefore at normal pressure - through a filter (not shown) for example mounted directly on the nozzle 18 of the carburetor.
  • a filter for example mounted directly on the nozzle 18 of the carburetor.
  • the engine consequently receives a combustible mixture of substantially constant richness.
  • the vacuum prevailing in its intake manifold 16 and in the downstream portion of the carburetion chamber 10 is low, since the widely open throttle valve 14 hardly hinders the flow of the air-mixture. fuel.
  • This vacuum is also low when the engine is idling, the butterfly 14 then being closed, as shown.
  • the auxiliary supply assembly 21-22 subjected to this low vacuum transmitted to the idling well 20 through the orifices 24 and / or 25 as the case may be can provide a fuel mixture suitably dosed, the flow rate and richness of which are determined by adjusting the life-needle 30 at idle.
  • the regulating device which is the subject of the invention has the function of correcting this excess wealth by admitting air or any gas. - for example taken from the engine exhaust - in the idle well 20, so as to control the relative depression which prevails there and consequently the operation of the calibrator 21 - nozzle 22 assembly.
  • the regulating device can be connected to a special adjusting screw 30 - substituted for the original screw visible in Figure 5 and retaining the partial sealing function of the idle orifice 25.
  • This special screw is provided at the end with a transverse passage 31 into which opens an axial passage 32 which extends to the outer end of the screw, shaped as a tip or cannula 33 for connection sealed from a conduit 34 coming from the regulating device.
  • the duct 34 could possibly include a bypass symbolized at 35 for the supply of an auxiliary idling carburetor 3 6 gasifying the mixture produced by the together 21-22 before returning it to the intake manifold 16 via a conduit 37, as described in French patent application No. EN 76 / 33.619 of 08.11.76 of which the Applicant is co-holder.
  • the screw 30 should completely close the orifice 25, which clearly shows that the regulating device which is the subject of the present invention only intervenes during transitions, when the butterfly 14 masks or unmasks the progressiveness orifice 24 respectively. in deceleration or acceleration.
  • the regulating device 40 shown in FIG. 1 essentially comprises a cover 41 of stamped sheet metal and a bottom 42 of molded light alloy between which is tightly enclosed the periphery of a flexible membrane 43 of elastomeric material, impregnated fabric or metal, which separates a closed upper chamber called “control” and an annular lower chamber called “working” that a duct 44 leading for example to the air filter maintains permanently at ambient atmospheric pressure.
  • This duct constitutes the additional air inlet.
  • Dnas the axis of the bottom 42 of the device is trapped by molding a piece 45 of soft magnetic material such as low-grade steel made of carbon, the outer end of which forms a nozzle or cannula 46 for connecting the duct 34, and the inner end of which forms an annular sealing seat 47 surrounded by the working chamber and engaged by the membrane 43 acting as a valve closing when it is in the rest position shown.
  • a permanent magnet 48 of cylindrical shape for example made of ferrite or a cobalt / rare earth alloy, capable of generating a high magnetic induction for a low weight and having a large coercive field despite its shape.
  • This magnet and the membrane are secured - with the interposition of washers and cups if necessary - by means of a tubular axial rivet 49, which constitutes a throttle with a very small passage section connecting the upper control chamber with the seat d seal 45 and therefore with the idle well 20 of the carburetor.
  • FIG. 2 show very schematically and respectively in the "Closed” and “Open” positions an equivalent device, in which the membrane 43 is replaced by a piston 143 sliding in a cylinder 141, the bottom 142 of which is crossed by an axial duct 145 forming an annular sealing seat 147, and by a radial duct 144 opening out under the piston.
  • the latter is crossed by an axial passage 149 of very small section and returned to the closed or rest position shown on the left by the action of return means shown by a spring 148 for convenience, but which it is understood that the force of reminder - like that of magnet 48 - decreases rapidly when the piston moves away from the seal seat.
  • the conduit 144 is in relation to the atmosphere and therefore maintained at ambient pressure Po, while the conduit 145 connected to the idle well of the carburetor is subjected to the pressure prevailing in the latter, namely P0- ⁇ p, where ⁇ p represents the relative depression.
  • this relative depression is established in the control chamber of the device, with a delay conditioned in particular by its variations by volume and by the section of the passage 149, this delay being counted from the moment when the sealing seat 147 is engaged by the piston 143, which then undergoes a restoring force R.
  • the piston remains in this position, as long as the sum of the ascending forces which it undergoes, either: Po (ss) + s (P0- ⁇ p) is less than the sum of the descending forces, ie: R + S (Po- ⁇ p), if S and s represent respectively the active surface of the piston and the area enclosed by the sealing seat.
  • the simplification of this inequality shows that the piston remains in the rest position for: ⁇ p (S - s) ⁇ R.
  • the value of this restoring resting force R is chosen or adjusted so that the piston is not detached from its sealing seat only when the relative vacuum in the idle well exceeds its value corresponding to the operation of the engine at idle speed, the throttle valve of the carburetor being closed.
  • the additional air flow admitted by the device is of course modulated by the vacuum prevailing in the idle well, which itself is modulated by this flow in proportions fixed by the ratio of pressure losses across the assembly 21-22 and the device 40 in parallel, on the one hand, and on the other hand through the orifices 24-25, the effective overall section of which depends on the angular position of the butterfly 14 with small openings.
  • the richness of the mixture supplied to the engine during the transitions between the idling speed and normal running can be kept substantially constant, without "hole” or excess, as the have demonstrated the approval tests of the device described.
  • the intervention then superfluous of the device is avoided by the time constant inherent in its operation.
  • the regulating device 40 shown in Figure 1 could of course be the subject of multiple alternative embodiments and many detailed improvements.
  • the magnet could be incorporated into the sealing seat, the membrane itself being made of soft magnetic material or carrying a simple washer of such material. Washers of non-magnetic material could be interposed on either side of the air gap to modify the width, and consequently the value of the initial restoring force.
  • the regulating device 40 is directly controlled by the vacuum in the idle well 20, namely by the very magnitude that it has the function of correcting. Therefore, the device 40 can be considered to be intrinsically controlled and unique.
  • This device symbolically represented in FIG. 3 and designated by 50 as a whole essentially comprises an adjusting member - for example a ball valve 51 and rotating 52 - constituting a throttle with adjustable passage section interposed between a conduit 53 of intake d additional air or gas, connected for example to the filter or to an outlet on the exhaust, and a conduit 54 leading to the idle well 20 of the carburetor, in the example represented by means of the conduit 34 and the screw special 30, and in any case in any upoint but necessarily located on the one hand, downstream of the calibrator-nozzle assembly 21-22 but on the other hand, upstream of the openings of progressiveness 24 and of idle speed 25, this with reference to the circulation of the mixture in the well 20.
  • the regulating device 50 is in parallel with the calibrator 21 but in series with the orifices 24-25.
  • the relative vacuum prevailing in the idle well 20 can be reduced at will by modulating the additional air flow admitted by the device 50, which has the effect of reducing the pressure drop and therefore the flow of air through calibrator 21, and consequently correct the richness of the fuel mixture supplied to the engine during the transitions between idling and normal running.
  • the first diagram in FIG. 4 shows that the calibrator 21 with an invariable passage section and the orifices 24-25 with overall effective section varying according to the position of the half-opened butterfly are always in series and therefore share the pressure drop ⁇ P se producing at the level of the throttle valve to absorb the difference between the ambient pressure PA at the inlet to the carburetor and the slightest pressure PT prevailing in the intake manifold of the engine.
  • the regulating device 50 mounted in parallel with the calibrator 21 allows the admission into the idle well 20 of an adjustable flow ⁇ 'of additional air or gas which - for the same overall flow g through the orifices 24-25 is subtracts from the flux initially passing through the calibrator and reduces it to a value ⁇ - ⁇ - ⁇ '. and thereby decreases the relative depression PR in the idle well.
  • the device 50 makes it possible to control the flow rate and the speed of the residual air flow ⁇ passing through the calibrator 21 then the nozzle 22.
  • the richness of the mixture produced by these elements can therefore be maintained at its optimum value - if necessary, taking into account its dilution by additional air - during the transitions between idling and normal running, by judiciously controlling the device 50 to any suitable combination of parameters conditioning the operation of the engine and its carburetor and / or reflecting their operating conditions.
  • Such slaving to multiple parameters is in fact made possible by the extrinsic control mode of the device 50, as several application examples will show below.
  • the electrical diagram in Figure 4 shows that the vacuum in the intake manifold can be compared to a source of variable voltage E which feeds a network comprising a variable resistance potentiometer P representing the orifices 24-25 in series with a fixed resistance R appearing the calibrator 21 and, in parallel on the latter, an adjustable resistance S appearing the regulating device 50.
  • E variable voltage
  • R fixed resistance
  • S adjustable resistance
  • a simple calculation shows that the voltage drop e at the terminals of R and consequently the intensity of the current i passing through it can be regulated by action on S and maintained appreciably constant in spite of the variations of E and P.
  • This analogy is only approximate, since the applicable laws are linear, but has the advantage of facilitating the understanding of the mode of action of the device according to the invention.
  • the adjusting member of the device is assumed to be constituted by a valve 51, the movable shutter of which is a drawer 52 coupled to a lifting beam 55 with double action, one of its ends being connected by a rod 56 to a crank 1? wedged on the axis 15 of the butterfly 14, while its opposite end is articulated at the end of the rod 57 of a piston subjected on the one hand to the vacuum PT in the intake manifold and on the other hand to the vacuum CS in idle well.
  • the displacements of the slide valve 52 of the valve are therefore dark tion of the combination of the opening of the butterfly and the ratio of depressions.
  • the choice of lever arms, active surfaces of the piston and its return force allows the relative importance of each of the parameters in question to be determined at will.
  • the movable shutter 51 of the valve 52 is assumed to be rotating and actuated by an electric motor 58 of the reversible and step-by-step type, powered by a pulse generator 59 of one or the other.
  • polarity or relative phase itself controlled by a microprocessor ⁇ P ensuring according to a programmed law the adequate combination in each circumstance of many parameters measured by respective sensors C1, C2 ... Cn.
  • sensors can for example comprise a magnetic rev counter coupled to the shaft of the engine or of the gearbox, an encoder coupled to the accelerator and clutch control pedals, to the gear shift lever, to the choke. .. accelerometers, thermometers, manometers and other bodies for measuring operating conditions.
  • the microprocessor and these various sensors could be used in parallel for other purposes, for example to optimize the driving of the vehicle.
  • Figure 5 shows that the additional air injection A 'can be carried out conveniently by a channel formed in a flange B interposed between the two superimposed elements C1, C2 of the body of a carburetor otherwise similar to that of Figures 1 and 3, the upper element C1 containing the main supply device 12 surrounded by its venturi and moreover the calibrator 21 and the nozzle 22 mounted at the head of the idling well, while the lower element or foot C2 contains the throttle valve and the bottom of the idle well, connected to the carburetor chamber 10 by the openings of progressiveness 24 and of idle 25, the latter controlled by the original adjustment screw.
  • This arrangement therefore ensures the injection of additional air under the conditions desired by the invention, without the need to make any modification to the carburetor.
  • Figure 6 shows that the injection of additional air could also be done in certain carburetors by taking advantage of the presence of a monobloc assembly 60 bringing together the calibrator and the idle jet.
  • the body of such a monobloc sprinkler is tubular and has, beyond a threaded surface 61, an external extension forming a connecting piece 62.
  • the axial passage 63 communicates by a radial bore 6B with this groove, to the right of which opens a passage 69 obliquely pierced in the body of the carburetor, so as to also open into the idle well below the nozzle.
  • the bore of the body 71 adjacent to the MPP engine has a long thread 76 into which a threaded surface 77 of the shutter 72 is screwed, which has a square axial hole 78 in which slides a rod 79 of the same section secured to the axis of the motor.
  • the latter receives from a generator not shown positive or negative pulses ensuring its rotation step by step in one or the other direction, and consequently the advance or the retraction of the shutter 72 relative to the outlet of the '74 air intake nozzle. It is understood that a judicious combination of the sequence of pulses and the profile of the tip 73 makes it possible to obtain any desired regulation law, with excellent precision.
  • the regulating member 80 illustrated in FIG. 8 essentially comprises a normally closed valve 81 and an electromagnet 82 actuating it periodically upon opening on command of recurrent pulses supplied by a GI generator (59 in FIG. 3).
  • the valve 81 comprises an air or gas inlet connection 83 and a sealing seat 84 for the outlet of the additional air or gas A ', normally prevented by a valve E5 returned to the closed position by a spring 86
  • the valve rod 87 passes tightly through the end wall of the electromagnet mandrel 82, made of a non-magnetic material, and carries at the end a permanent magnet 88 which slides with gentle friction in the mandrel and is polarized by as indicated.
  • the coil 89 is located so as to surround the magnet in the rest position, and arranged to have the indicated polarity - in the same direction as that of the magnet - when it receives a control pulse, so that the play of attractive and repulsive magnetic forces bring the magnet into the working position shown, and consequently the valve 85 at full opening. If the recurrence period T of the pulses is constant and if these pulses are modulated in duration, as shown in the attached diagram, depending on the variations of the parameters taken into account, everything happens as if the valve lift was modulated in average value by these same parameters.

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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)
EP79400331A 1978-11-16 1979-05-23 Vorrichtung zur Regelung des Luft/Brennstoffverhältnisses des von einem Vergaser hergestellten Gemisches beim Übergang von Leerlauf auf Normalbetrieb Ceased EP0013842A1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR7832324A FR2441731A1 (fr) 1978-11-16 1978-11-16 Dispositif regulateur de la richesse du melange fourni par un carburateur lors de la transition entre le regime de ralenti et la marche normale
FR7832324 1978-11-16
FR7912234 1979-05-14
FR7912234A FR2456855A1 (fr) 1979-05-14 1979-05-14 Dispositif regulateur de la richesse du melange elabore par un carburateur lors des transitions entre le regime de ralenti et la marche normale

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EP0013842A1 true EP0013842A1 (de) 1980-08-06

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EP79400331A Ceased EP0013842A1 (de) 1978-11-16 1979-05-23 Vorrichtung zur Regelung des Luft/Brennstoffverhältnisses des von einem Vergaser hergestellten Gemisches beim Übergang von Leerlauf auf Normalbetrieb

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EP (1) EP0013842A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105159333A (zh) * 2015-09-29 2015-12-16 黄杰 气流控制装置

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR514018A (fr) * 1919-10-04 1921-03-01 Zenith Carburateur Soc Du Dispositif applicable au ralenti des carburateurs, pour opérer son réglage pendant la marche
FR1026466A (fr) * 1949-10-28 1953-04-28 Salfa Trust Reg Procédé et dispositif pour le fonctionnement de carburateurs, notamment de moteursde véhicules
US2763285A (en) * 1952-03-27 1956-09-18 Reeves Edward Carburetor fuel economizer valve
US3077341A (en) * 1960-04-01 1963-02-12 Acf Ind Inc Carburetor
US3313532A (en) * 1964-09-08 1967-04-11 Acf Ind Inc Anti-smog device
FR1598603A (de) * 1968-03-30 1970-07-06
DE2056706A1 (de) * 1970-11-18 1972-05-25 Droge, August, 3011 Ahlem Verfahren zur Herstellung eines Luftkraftstoffgemisches für Vergasermotoren
DE2229369A1 (de) * 1972-06-16 1974-01-03 Wyman Vakuum gesteuerte vergaser-leerlaufgemisch-regulierschraube fuer verbrennungsmotore
FR2217551A1 (de) * 1973-02-09 1974-09-06 Acf Ind Inc
FR2228157A1 (en) * 1973-05-03 1974-11-29 Sibe Slow running jet for carburettor - thermostatically controlled by dilating oil capsule with needle valve
FR2233500A1 (en) * 1973-06-13 1975-01-10 Malherbe Andre Richness control system for carburettor - has air passage through fuel control screw adjustable by needle
CH558884A (de) * 1973-08-13 1975-02-14 Petermann Walter E Vergaser fuer brennkraftmaschinen.
FR2289745A1 (fr) * 1974-11-01 1976-05-28 Nissan Motor Procede et dispositif de controle du rapport air-carburant du melange fourni a un moteur a combustion interne
FR2296097A1 (fr) * 1974-12-24 1976-07-23 Nissan Motor Dispositif de controle du rapport air-carburant du melange combustible delivre a un moteur a combustion interne
FR2370180A1 (fr) * 1976-11-08 1978-06-02 Sennely Claude Dispositif correcteur de l'alimentation d'un carburateur de vehicule automobile
FR2380428A1 (fr) * 1977-02-11 1978-09-08 Acf Ind Inc Appareillage de commande de la richesse du melange brule dans un moteur a combustion interne
FR2384118A1 (fr) * 1977-03-14 1978-10-13 Sennely Claude Dispositif regulateur de ralenti pour moteurs de vehicule automobile

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR514018A (fr) * 1919-10-04 1921-03-01 Zenith Carburateur Soc Du Dispositif applicable au ralenti des carburateurs, pour opérer son réglage pendant la marche
FR1026466A (fr) * 1949-10-28 1953-04-28 Salfa Trust Reg Procédé et dispositif pour le fonctionnement de carburateurs, notamment de moteursde véhicules
US2763285A (en) * 1952-03-27 1956-09-18 Reeves Edward Carburetor fuel economizer valve
US3077341A (en) * 1960-04-01 1963-02-12 Acf Ind Inc Carburetor
US3313532A (en) * 1964-09-08 1967-04-11 Acf Ind Inc Anti-smog device
FR1598603A (de) * 1968-03-30 1970-07-06
DE2056706A1 (de) * 1970-11-18 1972-05-25 Droge, August, 3011 Ahlem Verfahren zur Herstellung eines Luftkraftstoffgemisches für Vergasermotoren
DE2229369A1 (de) * 1972-06-16 1974-01-03 Wyman Vakuum gesteuerte vergaser-leerlaufgemisch-regulierschraube fuer verbrennungsmotore
FR2217551A1 (de) * 1973-02-09 1974-09-06 Acf Ind Inc
FR2228157A1 (en) * 1973-05-03 1974-11-29 Sibe Slow running jet for carburettor - thermostatically controlled by dilating oil capsule with needle valve
FR2233500A1 (en) * 1973-06-13 1975-01-10 Malherbe Andre Richness control system for carburettor - has air passage through fuel control screw adjustable by needle
CH558884A (de) * 1973-08-13 1975-02-14 Petermann Walter E Vergaser fuer brennkraftmaschinen.
FR2289745A1 (fr) * 1974-11-01 1976-05-28 Nissan Motor Procede et dispositif de controle du rapport air-carburant du melange fourni a un moteur a combustion interne
FR2296097A1 (fr) * 1974-12-24 1976-07-23 Nissan Motor Dispositif de controle du rapport air-carburant du melange combustible delivre a un moteur a combustion interne
FR2370180A1 (fr) * 1976-11-08 1978-06-02 Sennely Claude Dispositif correcteur de l'alimentation d'un carburateur de vehicule automobile
FR2380428A1 (fr) * 1977-02-11 1978-09-08 Acf Ind Inc Appareillage de commande de la richesse du melange brule dans un moteur a combustion interne
FR2384118A1 (fr) * 1977-03-14 1978-10-13 Sennely Claude Dispositif regulateur de ralenti pour moteurs de vehicule automobile

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105159333A (zh) * 2015-09-29 2015-12-16 黄杰 气流控制装置
CN105159333B (zh) * 2015-09-29 2018-01-19 黄杰 气流控制装置

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