US3661134A - Fuel feed devices for internal combustion engines - Google Patents

Fuel feed devices for internal combustion engines Download PDF

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Publication number
US3661134A
US3661134A US56879A US3661134DA US3661134A US 3661134 A US3661134 A US 3661134A US 56879 A US56879 A US 56879A US 3661134D A US3661134D A US 3661134DA US 3661134 A US3661134 A US 3661134A
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United States
Prior art keywords
engine
throttle member
feed device
load
shaft
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Expired - Lifetime
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US56879A
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English (en)
Inventor
Andre Louis Mennesson
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Societe Industrielle de Brevets et dEtudes SIBE
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Societe Industrielle de Brevets et dEtudes SIBE
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    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/02—Fuel-injection apparatus characterised by being operated electrically specially for low-pressure fuel-injection

Definitions

  • the fuel feed device includes a valve actuated by an elec tromagnet, which is energized over a variable fraction of each ⁇ 52] IIIIIIIIIIIII "123/139 Aw 123/32 AE
  • the modifying means can be a differential gear device.
  • the invention relates to fuel feed devices for internal combustion engines, of the type which comprise, on one hand, in their intake pipe, upstream of a main throttle member actuated by the driver, an auxiliary throttle member which is opened automatically and progressively in proportion as the flow of air in said conduit increases, on the other hand, means for injecting under pressure liquid fuel into the portion of this pipe situated downstream of the main throttle member and, lastly on the other hand, a metering system sensitive to the position of the auxiliary throttle member and adapted to adjust the flow of fuel injected in such a manner that the richness of the air/fuel mixture passing into the intake pipe is substantially constant, at least for certain operational conditions of the engine, the abovesaid injection means being constituted by a source of fuel under pressure whose delivery circuit, opening into the abovesaid portion of the intake pipe, is controlled by at least one valve actuated by an electromagnet.
  • the invention relates more particularly to those of the devices of the type concerned which have been described in the U5. Pat. No. 3,543,739 of applicant filed Oct. 9, 1968 and of which the abovesaid metering system comprises a member driven in continuous rotary movement, by the internal combustion engine, and capable, by acting on the energizing ofthe electro-magnet, of determining over a fraction only of each of its revolutions the opening of the valve, this system being arranged so that it increases the said fraction in proportion as the opening of the auxiliary throttle member increases and vice versa.
  • the invention relates more particularly, but not exclusively, among these devices, to those of which the abovesaid member with continuous rotary movement comprises means adapted to emit, towards a stationary receiver, a flow of energy during a fraction of a revolution of said member the value of which varies as a function of the relative position of the rotary member and of the receiver, this receiver being arranged so that it controls the energizing circuit of the abovesaid electromagnet according as it receives or not the flow of energy, and the auxiliary throttle member being arranged to modify the relative position of the rotary member and of the receiver; the means emitting the flow of energy being possibly a luminous source and the receiver a photo-sensitive element such as a photo-electric cell or photodiode, the source and the cell being placed on respective sides of the abovesaid rotary member arranged as an opaque screen pierced with at least one window to enable illumination of the cell.
  • the abovesaid member with continuous rotary movement comprises means adapted to emit, towards a stationary receiver, a flow of energy during a
  • the rotary member is advantageously constituted by a flat and opaque disc perpendicular to its axis of rotation, the stationary receiver being such that it can move to or from this axis.
  • the feed device defined above is characterized by the fact that between the member with continuous rotary movement and its power take off from the internal combustion engine are provided means, such as a differential element, to modify, in the course of operation, the angular position of the said rotary member with respect to the shaft of the engine and, consequently, the moments of the engine cycle for which injection is effected.
  • FIG. 1 shows, in diagrammatic elevation with portions cut out, one embodiment of a feed device constructed according to the invention whose elements are in the normal operating position;
  • FIG. 2 shows a section of the embodiment of FIG. I along the line llll;
  • FIGS. 3 and 4 show, in two different positions of operation, automatic means constructed according to the invention to cause the relative position of the rotary member or screen to vary;
  • FIGS. 5 and 6 lastly, show, similarly to FIGS. 3 and 4 respectively, automatic means constructed according to a further embodiment of the invention.
  • the device As regards the device as a whole, it is constituted in any suitable manner such that it comprises (FIGS. l and 2):
  • a metering system sensitive to the position of the auxiliary throttle member 3 and adapted to regulate the flow of injected fuel in such a manner that the richness of the air/fuel mixture passing into the pipe 1 is substantially constant, at least for certain operational conditions of the engine.
  • the auxiliary throttle member 3 is constituted by a butterfly valve keyed on an axle 4.
  • This butterfly valve is actuated by a pneumatic device comprising a diaphragm 5 separating two chambers 6 and 7 from one another.
  • the chamber 6 is connected through a passage 8 to a chamber 9 constituted by the section of the pipe I which is comprised between the main throttle member 2 and the valve 3.
  • the axle 4 is rigidly fixed to a lever 10 provided, at its free end, with a pin II which co-operates with the end of a rod 12, which is connected to the diaphragm 5.
  • a spring 13 tends constantly to close the valve 3 against the action of the suction transmitted in the chamber 6.
  • the chamber 7 is placed at atmospheric pressure through a channel [4 beginning preferably from the air intake 15 of the pipe I.
  • valve 3 the angular position assumed at any moment inside the pipe 1 by the valve 3 corresponds to the flow of air which circulates in this pipe.
  • the valve 3 could be replaced by equivalent throttle members; of which examples have been described in the abovesaid patent.
  • the abovesaid injection means are constituted by a source of fuel under pressure (not shown) of which the supply circuit, opening into the pipe I downstream of the main throttle member 2, is controlled by at least one valve 16 actuated by an electro-magnet 17.
  • the metering system is made to comprise a disc, flat and opaque, 18 which is borne by a shaft 19 connected to the internal combustion engine (not shown) fed by the device, so that the disc is driven in a continuous rotary movement around an axis perpendicular to its plane.
  • the disc 18 is interposed between alight source 20 and a photo cell 21 borne by a common support 22 connected to the auxiliary throttle member 3 and it is pierced by at least one opening 23 adapted to allow the beam of light issuing from the source 20 to arrive at the cell 2].
  • the cell 21 is arranged to control the energizing of the electro-magnet I7 according as it is illuminated or not and the assembly is such that the electro-magnet is energized over a fraction of each of the revolutions of the disc 18 which varies in the same sense as the degree of opening of the throttle member 3.
  • the luminous source 20 can be constituted by a lamp which is adapted to be supplied by a battery 24 as soon as the ignition switch 25 of the engine is closed and which is arranged in a hollow boss 26 pierced by a hole. This hole is oriented so as to direct a luminous beam onto the cell 21, through a hole passing through a hollow boss 27 where the said cell is housed.
  • the bosses 26 and 27 are made to be borne by the ends of the U-shaped support 22 which strad dles the disc 18 so that the source 20 of the cell 2] occur on respective sides of the disc and which is rigidly fixed to the axle 4, the latter being parallel to the shaft 19 as well as to the luminous beam received by the cell 21.
  • an amplifying relay 28 To utilize the currents in the cell 21, there is inserted between the latter and the electro-magnet 17, on one hand, an amplifying relay 28 and if necessary, on the other hand, an intensity limiter 29.
  • a distributor 30 synchronized with the disc 18 to send successively the intermittent energizing current into the different electro-magnets, the disc possessing as many windows 23 as there are cylinders to be supplied. These windows are distributed regularly around the shaft 19 and each has a shape such that the fraction of a revolution during which it enables the cell 21 normally to be illuminated increases in proportion as the throttle member 3 is opened, that is to say (in the embodiment shown) in proportion as the bosses 26,27 approach the shaft I9.
  • the feed device which has just been described has the following operation.
  • each window 23 has been determined so that the fraction ofa revolution during which it allows the luminous ray 20 to pass to the cell 2I (creation of a current in the conductor 31), increases in proportion as the latter elements approach the shaft I9, it is ensured that the flow of fuel delivered by each injection valve 16 varies in the same sense as the flow of air in the pipe 1.
  • a gear 32 preferably conical.
  • the drive shaft 33 actuated by the engine, has at its end a gear 34 identical with the preceding one.
  • These two gears mesh with at least one same conical intermediate gear 35, whose shaft 36 is movable in a plane perpendicular to the common axis of the two other gears 32 and 34.
  • the shaft 36 is connected to a rod 37 by ajoint 38.
  • the three gears 32, 34 and are housed in a casing 39 traversed, on one hand, by the shafts l9 and 33 around the common axis X-X of which it can turn freely and, on the other hand, by the shaft 36 which is fixed with respect to the casing.
  • the position of the rod 37 is made dependent on the load of the engine.
  • this load is evaluated by the position of the main throttle member 2.
  • the rod 37 is connected to a lever 40 rigidly mounted on the axle of the main throttle member 2.
  • the load is measured by the suction existing in the portion of the pipe I situated downstream of the main throttle member 2.
  • the rod 37 is connected to a diaphragm 4
  • the diaphragm 41 is subjected to the opposing forces of a spring 43 and of the suction existing in the intake pipe I and transmitted through the tube 44.
  • the angular position of the shaft 33 driven by the engine is characteristic of the state of the intake valve open or closed and, on the other hand, the angular position of the shaft I9 which bears the disc 18 is characteristic of the moment when the injection of fuel is effected.
  • the invention is in no way limited to those of its methods of application, nor to those of its methods of production of its various parts, which have been more par ticularly considered; it embraces, on the contrary, all variations.
  • Fuel feed device for an internal combustion engine, having at least one intake valve, comprising, in its intake pipe, up stream of a main throttle member actuated by the driver, an auxiliary throttle member which is opened automatically and progressively in proportion as the air flow increases in the said pipe, means for injecting liquid fuel under pressure into the portion of said pipe situated downstream of the main throttle member and upstream of said intake valve, a metering system sensitive to the position of the auxiliary throttle member and adapted to adjust the flow of fuel injected in such a way that the richness of the air/fuel mixture passing into the intake pipe is substantially constant, at least for certain operational conditions of the engine, said injection means being constituted by a source of fuel under pressure whose delivery circuit, opening into said portion of the intake pipe, is controlled by at least one valve actuated by an electro-magnet, the metering system comprising a member driven in continuous rotation by the internal combustion engine, and capable, by acting on the ener gization of the electro-magnet, of determining over a fraction only of each of its
  • Feed device according to claim 1, wherein the modifying means comprise a differential element.
  • Feed device according to claim 1, said load being evaluated by the position of the main throttle member.
  • Feed device according to claim 2, said load being evaluated by the position of the main throttle member.
  • Feed device according to claim 1, said load being evaluated by the suction existing in the intake pipe downstream of its main throttle member.
  • Feed device according to claim 2. said load being evaluated by the suction existing in the intake pipe downstream of its main throttle member.
  • the differential element comprises two conical gears aligned and borne respectively by a motor drive shaft and by the shaft of the rotary member, said two gears being both in mesh with a third gear pivoted in a differential casing. and wherein the modifying means act on the casing so as to modify its angular position around the common axis of the two said shafts.
  • the differential element comprises two conical gears aligned and borne respectively by a motor drive shaft and by the shaft of the rotary member, said two gears being both in mesh with a third gear pivoted in a difi'erential casing, and wherein the modifying means act on the casing so as to modify its angular position around the common axis of the two said shafts.

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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 Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
US56879A 1969-07-22 1970-07-21 Fuel feed devices for internal combustion engines Expired - Lifetime US3661134A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6925000A FR2050315B2 (fr) 1969-07-22 1969-07-22

Publications (1)

Publication Number Publication Date
US3661134A true US3661134A (en) 1972-05-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
US56879A Expired - Lifetime US3661134A (en) 1969-07-22 1970-07-21 Fuel feed devices for internal combustion engines

Country Status (6)

Country Link
US (1) US3661134A (fr)
JP (1) JPS514201B1 (fr)
DE (1) DE2032657A1 (fr)
ES (1) ES381730A2 (fr)
FR (1) FR2050315B2 (fr)
GB (1) GB1280377A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980000267A1 (fr) * 1978-07-21 1980-02-21 Hitachi Ltd Dispositif d'injection de combustible pour moteur a combustion interne

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3631733A1 (de) * 1986-09-18 1988-03-24 Kloeckner Humboldt Deutz Ag Vorrichtung an einer brennkraftmaschine zur aenderung des foerderbeginns und/oder der ventilsteuerzeiten

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1402408A (en) * 1918-07-05 1922-01-03 Jr William H Firebaugh Fuel control for semi-diesel engines
US1718586A (en) * 1925-12-10 1929-06-25 Motorenfabrik Deutz Ag Governing system for diesel engines with arrangements to work with increased admission pressure (supercharging)
US3430616A (en) * 1966-11-11 1969-03-04 Bosch Gmbh Robert Fuel injection control system
US3482558A (en) * 1968-01-12 1969-12-09 Acf Ind Inc Fuel injection system
US3548791A (en) * 1968-07-08 1970-12-22 Gillett Tool Co Precision fuel metering system having operational mode change during transient intervals

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1402408A (en) * 1918-07-05 1922-01-03 Jr William H Firebaugh Fuel control for semi-diesel engines
US1718586A (en) * 1925-12-10 1929-06-25 Motorenfabrik Deutz Ag Governing system for diesel engines with arrangements to work with increased admission pressure (supercharging)
US3430616A (en) * 1966-11-11 1969-03-04 Bosch Gmbh Robert Fuel injection control system
US3482558A (en) * 1968-01-12 1969-12-09 Acf Ind Inc Fuel injection system
US3548791A (en) * 1968-07-08 1970-12-22 Gillett Tool Co Precision fuel metering system having operational mode change during transient intervals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980000267A1 (fr) * 1978-07-21 1980-02-21 Hitachi Ltd Dispositif d'injection de combustible pour moteur a combustion interne

Also Published As

Publication number Publication date
ES381730A2 (es) 1973-01-16
DE2032657A1 (de) 1971-02-11
GB1280377A (en) 1972-07-05
JPS514201B1 (fr) 1976-02-09
FR2050315B2 (fr) 1974-08-09
FR2050315A2 (fr) 1971-04-02

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