EP0358658A1 - Systeme a injection et de regulation pour moteurs a combustion interne - Google Patents

Systeme a injection et de regulation pour moteurs a combustion interne

Info

Publication number
EP0358658A1
EP0358658A1 EP88903463A EP88903463A EP0358658A1 EP 0358658 A1 EP0358658 A1 EP 0358658A1 EP 88903463 A EP88903463 A EP 88903463A EP 88903463 A EP88903463 A EP 88903463A EP 0358658 A1 EP0358658 A1 EP 0358658A1
Authority
EP
European Patent Office
Prior art keywords
valve
pressure sensors
metering
pressure
pressure sensor
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.)
Withdrawn
Application number
EP88903463A
Other languages
German (de)
English (en)
Inventor
Bertil Olsson
John Olsson
Gunnar Olsson
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 SE8701609A external-priority patent/SE457211B/sv
Priority claimed from SE8702013A external-priority patent/SE457279B/sv
Application filed by Individual filed Critical Individual
Publication of EP0358658A1 publication Critical patent/EP0358658A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D3/00—Controlling low-pressure fuel injection, i.e. where the fuel-air mixture containing fuel thus injected will be substantially compressed by the compression stroke of the engine, by means other than controlling only an injection pump
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/52—Arrangement of fuel metering devices
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/16—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for metering continuous fuel flow to injectors or means for varying fuel pressure upstream of continuously or intermittently operated injectors
    • F02M69/18—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for metering continuous fuel flow to injectors or means for varying fuel pressure upstream of continuously or intermittently operated injectors the means being metering valves throttling fuel passages to injectors or by-pass valves throttling overflow passages, the metering valves being actuated by a device responsive to the engine working parameters, e.g. engine load, speed, temperature or quantity of air
    • F02M69/20—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for metering continuous fuel flow to injectors or means for varying fuel pressure upstream of continuously or intermittently operated injectors the means being metering valves throttling fuel passages to injectors or by-pass valves throttling overflow passages, the metering valves being actuated by a device responsive to the engine working parameters, e.g. engine load, speed, temperature or quantity of air the device being a servo-motor, e.g. using engine intake air pressure or vacuum

Definitions

  • Injection and regulating system for internal combustion engines with injection nozzles for at least one fluid for example the fuel and/or an additive and incorporating pneu cally operable pressure sensors communicating with the insi the inlet manifold, on both sides of a throttle valve, pressure sensors governing a valve or the like for metering fluid.
  • the purpose of the present invention is to provide a regula unit, controlling at least one metering valve, so that automatic fuel regulation is achieved, which is satisfac under most load conditions.
  • the regulating unit may control m metering valves, one for each fluid, for example a main fuel an extra fuel or such.
  • Another purpose of the invention is provide a metering valve having a good linearity, long stro and low production cost. This has been achieved -through characterizing parts of the claims.
  • Fig. 1 is a schematic presentation of a combustion eng equipped with a regulating device in accordance with invention.
  • Fig. 2 shows on an enlarged scale, seen from above, a doub regulating unit in accordance with the invention controlling metering valves, one for each fluid.
  • Fig. 3 shows a side view of the regulating unit illustrated fig. 2.
  • Fig. 4 shows another embodiement of the invention, partly cross section.
  • Fig. 5 is an axial section through a metering valve in accord with the invention.
  • Fig. 6 is a cross section through the valve illustrated in
  • Fig. 7 is a section through a part of a modified metering v in accordance with the invention.
  • a regulating unit accordinging to the invention is app on a combustion engine 12, of which only one cylinder is show throttle 15 is arranged in the intake manifold 14 in a con tional manner, where the throttle is actuated by, for exam the throttle pedal (not shown).
  • a conduit 16 is connected to the intake manifold 14, the con 16 communicating with a first pressure sensor 17, and upstr of the throttle 15 another pressure sensor 19 is connected v conduit 18.
  • Both pressure sensors 17 and 18 are constructe the same way, and the difference in size is dependent on fact that the negative pressure downstreams of the throttle 1 much stronger than upstreams of the throttle.
  • the variation pressure compared to the atmospheric pressure will act on diaphragm 20 in both pressure sensors.
  • metering valve is a part of the fuel system of the combustion engine.
  • the fuel system comprises a fuel tank 27, a feeding 28 and a filter 29, which via a conduit 30 are connected to metering valve 26. From this a conduit 31, one for each cylin leads to the injection valve 32, which may be the free end of the conduit 31 or an injection valve 33.
  • the connection of the leve is adjustable in order to change the effective length of lever 25.
  • Regulating units in accordance with the invention are feasab for regulating many fluids through separate regulating system
  • the first medium is petrol, diesel straight run
  • the second medium can be for example wat with an anti-freeze agent, or an alcohol, as ethanol or methano
  • the medium may also be a suitable gas, for example PG.
  • FIG. 2 a 3 An embodiment for two different fluids are shown in fig. 2 a 3.
  • the pressure sensors 19a and 19b a attached to the engine block 12, while the pressure sensors 1 and 17b are attached to the arm 25 of each metering valve 26a a 26b.
  • the diaphragm rods 21 and 22 are jointed together throu the link 23.
  • the other sensor 19a will act as a more less solid holder-on. This means that the retraction of t diaphragm and rod of the sensor 17a will cause the sensor 17a move, and thus move the arm 25 on which it is mounted.
  • T diaphragm rods 21 and 22 are connected to a slide 36 and 37 ea of a common slide valve 38.
  • the slides 36 and 37 opens or clos their own outlet opening more or less. These outlet openings a connected through a branch pipe to the fuel feed conduit31, o for each cylinder.
  • the slide valve 38 will meter the fuel in the same manner described above, and deliver a correct amount of fuel for ea load condition.
  • Each pressure sensor may as well function wi its own slide valve or similar.
  • the slides 36 and 37 may have the form of the slide 41 in fig. 5.
  • the metering valve 26 has a cylindric slide 41, one end of the slide has a very elongated coniform chamfe
  • the housing 44 of the metering valve 26 has outlet ope
  • the outlet openings 43 ha diameter of one millimeter and the angle of the coniform pa is two degrees, the stroke will be approximately eight m meters.
  • the valve in this case is linear exept for the millimeter.
  • the outlet openings may 43 have wide shallow recesses. Also here the angle m approximately two degrees.
  • the conicity, or the inclinatio vary betwen 10:1 and 40:1, at which the first figure indi the length and the second figure the height of the inclin with respect to the horizontal plane.
  • a regulating unit in accordance with the invention may als used as an indication device in combination with the described devices, or separate.
  • the arm 25 of the metering 26, or a corresponding unit may thereby form a pointer 40, can be used as an econometer, supplying the driver with information of the fuel consumption.
  • the invention is not limited to the embodiments shown, b plurality of variations are possible within the scope of claims. It is thus possible to connect more than one met valve 26 to the link 23 via a second link 24 for the distrib of one or more extra medium. It is further possible to pressure sensors giving electric output, regulating at least metering valve.

Landscapes

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

Abstract

Système à injection et de régulation pour moteurs à combustion interne ayant des gicleurs (32) destinés à au moins un fluide, par exemple le carburant et/ou un additif, et comprenant des détecteurs de pression (17, 19) à commande pneumatique communiquant avec l'intérieur du collecteur d'admission (14), situés de part et d'autre de la soupape d'étranglement (15). Lesdits capteurs de pression régulent une soupape (26) ou analogue destinée à doser le fluide. Le premier détecteur de pression (17) est agencé en aval de la soupape d'étranglement pour détecter le coefficient de plénitude du moteur. Un moyen destiné à détecter la pression existante dans le collecteur d'admission (14) est disposé en amont de la soupape d'étranglement (15) et est orienté de telle sorte que le second détecteur de pression (19) est actionné par le flux d'air entrant dans le moteur. Les signaux/débattements de sortie provenant des deux détecteurs de pression (17, 19) sont coordonnés et intégrés de telle sorte que chaque détecteur de pression (17, 19) régule la soupape de dosage (26) indépendamment de l'autre, et le signal/débattement de sortie se compose des signaux/débattement de sortie des deux détecteurs de pression.
EP88903463A 1987-04-16 1988-04-18 Systeme a injection et de regulation pour moteurs a combustion interne Withdrawn EP0358658A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE8701609A SE457211B (sv) 1987-04-16 1987-04-16 Regleranordning till foerbraenningsmotorer samt indikeringsanordning daertill
SE8701609 1987-04-16
SE8702013A SE457279B (sv) 1987-05-15 1987-05-15 Foerdelnings- och reglerventil foer ett fluidum
SE8702013 1987-05-15

Publications (1)

Publication Number Publication Date
EP0358658A1 true EP0358658A1 (fr) 1990-03-21

Family

ID=26659776

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88903463A Withdrawn EP0358658A1 (fr) 1987-04-16 1988-04-18 Systeme a injection et de regulation pour moteurs a combustion interne

Country Status (5)

Country Link
EP (1) EP0358658A1 (fr)
KR (1) KR890700742A (fr)
CN (1) CN1030121A (fr)
AU (1) AU1629888A (fr)
WO (1) WO1988008076A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100465418C (zh) * 2004-12-24 2009-03-04 西南师范大学 摩托车自适应传动传感装置
DE102005004423B3 (de) * 2005-01-31 2006-06-14 Siemens Ag Verfahren zum Überwachen der Funktionsfähigkeit eines Kraftstoffeinspritzsystems
JP4512007B2 (ja) * 2005-08-02 2010-07-28 株式会社ケーヒン スロットルボデーにおける吸気負圧検出装置
CN102349710A (zh) * 2011-10-28 2012-02-15 江苏红豆实业股份有限公司 一种后背可充气式服装

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB155537A (en) * 1920-09-24 1920-12-23 Walter Henry Howell Improved means for enabling an earthenware tea-pot, jug or other like utensil to be used when the handle thereof has been broken
IT985679B (it) * 1972-06-19 1974-12-10 Vergasser Gmbh U Co Kg Deutsch Regolatore del carburante per moto ri a combustione interna ad accen sione indipendente
GB1546074A (en) * 1975-05-15 1979-05-16 Tecalemit Ltd Fuel injection systems for internal combustion engine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8808076A1 *

Also Published As

Publication number Publication date
AU1629888A (en) 1988-11-04
KR890700742A (ko) 1989-04-27
CN1030121A (zh) 1989-01-04
WO1988008076A1 (fr) 1988-10-20

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