DE7020311U - FUEL INJECTION DEVICE FOR COMBUSTION MACHINERY. - Google Patents

Description

klöckner-humbolot-oeutz Αβ · Cologne MIn. den 25 · Hai 1970 f ^

D 70/57 - TP R / fr <u

Fuel injector for Brennkraftaaeohlnan

The invention relates to a fuel-fuel device for internal combustion engines, especially diesel internal combustion engines, in which the injection quantity or i ^ rdergesoh Speed by which a Yentil is controlled, 'the one on the Controls the discharge channel arranged on the pressure side.

In addition to the number of revolutions, the ability to record numerous other NefigrOeen and to be able to attach extensive electrical special postures becomes fLok in the case of internal combustion engines. Electronic control device aimed at: Because of the high actuating forces required on the control mechanisms of the known injection devices for these internal combustion engines, this power-amplified actuator, which has many disadvantages, could not be implemented up to now and therefore had no door parts in terms of space requirements. The use of solenoid valves for the quantity measurement according to the gate pattern of the Otto internal combustion engine is only suitable for the low-pressure system »which leads to larger quantity spreads and additional dead times for the control

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KLÖCKNER'HUMBOlOr'DIUTZAa'KdiN

25 Nftl 1970. /

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ttihxt. AoBerdea ObereteIgen dl · b «l Aar llnaprltsung fttr Dleeelbreaakreftaeeohlnen required" Hcngoji and eehr korsen Offaitac0i <lt "tt dl ·

S · let «la · Br« aiietoff # laeprltfTorrlohtttac known (d «uteoh · Petenteohrift 63Θ 751) · b «l dnr dl · Druokeelt · by a AbetrOokanal old of the Saoceel-le rerbonden let, the ron el-BMi spring belayed # t »n valve is not rotated, the rotation ■ increases der Brenakreftaaeohlne and davit dl ·? ördepgeeohwlndlgkelt dee Xolbene of Blnepriterorrlchtune about elnec starirnten Vert, co wäoht the Bruok on the Drnokeelte 00 far, that the valve lifts against the spring force and the AbatrlMkaiial Open. Doroh d «n Abbaa dee Draekee On the draoke side, the pump speed of the injection becomes torrlohtang Geabgeetst and equilateral through the Discharge of fuel reduces the amount of waste. Then the spring-loaded valve let «β Anyhow nmr a possible, dl «Slnaprltsaenge baw. Funding rate depending on of an oaxiaalon 7Orderdraokee κα control.

The power of indang lies in the aaf gave «» agronde, a brenaetaffeine sprlts torriohtong su create the dl · above

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KLOCKNER-IfUMBOLDT-DEUTZ AO · COLOGNE

25. Mti 1970 _ D 70/51 - IP R / ftf

Fachte11 «does not have and if there is little need for a budget, old small actuating forces a rule the conveyor speed is made possible by an electric trolley. It is used according to the invention in the case of Alnar potato liquor Syorriohtaag At the beginning of the process, the level was solved because the valve is a magnetic valve, and there is a pulse generator is controlled.

Dar Iapnlagabar can be a breaker oaoh kind of a ZündTarteilere or an electronic ragler ealn, there? controls the solenoid valve through the size-dependent Iepulee. Thi «ögllohst retrospectivelyfrel sa work and aa sohnell To be able to release a large cross-section, there is a valve designed ala Kolbansahlebar. 2> ar opening pontoon, which marks the beginning of the Ah * r8eene must be controlled very precisely will. On the other hand, the effective opening duration cannot be changed and can differ within relatively wide tolerances. The minimum duration is determined by the required © hen Zeitquereohnitt soa deriving the drainage per the »arieal Sauer is covered with water from the beginning of the opening the suction control from filling the pttepenrauas of the fuel fuel system for the next hub. Sine enough Since then, Saner can open up by training «Intr

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KLÖCKNER-HUMBOLDT-DEUTZAGKÖLN 25 * Hai 1970

D 70/57 - TP R / Fr

Hookon shape can be achieved with a large upper margin. Included the fuel injection pump according to the invention only Opening time, not an opening time, is controlled, the influence of time constants can be advantageous be switched off by a corresponding advance. Another part of the goal is that in the fuel injection device according to the invention Tried and tested components can be used and the masses of the electrically operated Control parts are minor.

According to one embodiment of the invention, it is proposed that the solenoid valve be open in the de-energized state. This ensures that the fuel injection device is always boosted in the event of a failure of the electrical current.

To control the timing of the conveyor speed an additional solenoid valve can be attached, which releases a small variable cross-section, the pressure being reduced with a slight loss of volume and the subsidy rate is influenced. In advantageous Way, this happens with a piston valve

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^ MX KLOCKNER-HUMBOLDT-DEUTZ AG. COLOGNE 25 ο Μβΐ 1970

D 70/57 - TP R / Fr

trained solenoid valve by a Sntlastungssohl tz _t whose cross section can be variable over the opening path. Since only a reduction in the conveying speed can be achieved by this measure, the squat drive must be designed for the highest desired conveying speed.

According to a further embodiment of the invention, it is proposed that that the intake port of the fuel injector is controlled by a solenoid valve. This measure enables the start of delivery of the fuel injector be controlled independently of the overhead controls of the suction channel by the pump piston, namely the promotion begins earlier when the solenoid valve closes.

When controlling the opening time, there must be a door run time are taken into account, which inter alia. the tent constant of the solenoid valve and the Oberdeokung of the piston sole and the influences of mechanical friction of the piston outer surface " contains. There is a problem with polyhedra Internal combustion engines the supply side for all solenoid valves

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keep the same as the solenoid valves in your magnetic Data, in the mechanical friction that depends on the temperature, the fuel viscosity, the state of wear, the manufacturing tolerances and any dirt particles depends, have considerable scatter. However, for an even load on all cylinders it is necessary that regardless of the desired speed, all cylinders receive the same amount of fuel per injection cycle.

According to a further embodiment of the invention, therefore proposed for multi-cylinder internal combustion engines, that a regulator is provided for each cylinder, one of which is the solenoid valve of the fuel-gas fuel device for a cylinder depending on the operating size to be observed, see e.g. Srehsahl controls while the solenoid valves for the other cylinders are regulated depending on the control point of the first solenoid valve. Of the The controller of a cylinder takes over the target / actual value Tergleioh the size of the company to be complied with and controls responsively the solenoid valve of this cylinder. The opening note this solenoid valve serves as a target value for controlling the opening times of the remaining solenoid valves.

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D 70/57 - TP R / Fr

Lo & a first solenoid valve serves as a pacemaker for the other solenoid valves, a measuring sensor for the input signals of the setpoint and actual value of the solenoid valves, for example, devices for measuring the valve lift or the pressure drop can be provided in the case of the hope. It is customary to choose the speed of the internal combustion engine as the operating variable to be observed; however, it is also conceivable that other operating parameters, e.g. B. the torque, file exhaust gas opening, the exhaust gas composition, etc., tsi de? Regulation must be taken into account.

Embodiments of the invention are shown in the accompanying drawing shown schematically. CIewriting parts are in the Illustrations labeled the same.

Fig. 1 shows a cross section through an invention Fuels ^ injection device

Fig. 2 shows a cross section through a solenoid valve that a «relief seat to reduce the conveyor speed «And Ia a special Öehttuee under · brought let «

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ZmI klöckner-humboldt-deutz ag · cologne May 25, 1970

D 70/57 - TP R / Fr

Fig. 3 shows a partial cross section through a fuel-8toffeiueprit «TOix * ichtung, in which a solenoid valve controls the anauge opening.

Fig. 4 shows the scheme of an inventive concept Fuels insprit «device for a multi-syllable Internal combustion engine.

Sound of a shaft 1 alt a squat 2 is made via a pestle 3 a pump piston 4 driven, £ cr by a self on a Poapengehäase 6 Abstütsends Teder 5 is loaded. Dau Puapengehäase 6 has above the Puopenlcolbens 4 a Cylinder head 7 «with an intake port 8 and an exneo pressure port 9 on. To the Druokkanal 9 includes a Bückechlagrentll 10 and a connecting line 11 an injection valve 12 & n, the one led into a dttsenkOrper 15 · and has a nozzle needle U loaded by a spring 13. The nozzle needle 14 is opposed by the delivery pressure the Pederkraft 13 is open. Ia housing of the injection valve β 12 eweig το «Druokkanal 16 from an outflow channel 17, which is controlled by a solenoid valve 18. This will actuated by mefiwert-dependent pulses of a pulse generator not shown in detail. The solenoid valve 18 is as

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KLÖCKNER-HUMBOLDT-DEUTZ AG COLOGNE $ 2 Mil 1970

D 70/57 - «Ρ Ε / 1 *

trained, whose Σσίονα 19 La ovjrvfilösem State of the magnetic vent 18 by a spring 20 la Direction towards Open is raised. To the discharge channel 17 Closes a line 21 old a * RttokeohlAgrentll 22, which brings the stagnant fuel of the nloht closer The storage container shown again '/.^f'ihrt. Self-entry fee Can the Magnetentll 18 In the same way without the function su change also in the Slnsprltspuape 6 instead Be housed in injection valve 12.

In Fig. 2, the squat 2 is designed as a hollow hook, whereby a very high conveying speed is achieved. In this illustration, the magnet valve 18 is in a special one Housing housed ron of a pressure line 24 leads to Einsprltsrentil, not shown. The case has a relief schiitζ in the area of the piston 19 25, the Ib trap of maximum feed speed Tom piston 19 gana ttberdeokt is. The relief slot 25, which could also be arranged in the piston 19 itself, has a variable cross-section over its length have by running either in its width or in its breadth Tsriated. In this way, the outflowing amount can be better regulated and possibly occurring pressure surges when inflating be avoided.

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25. Η ·! 1970 D 70/57 - * »

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in aer add. 5 let ία Pumpengeti & uee 6 another magnet j rent 11 26 is provided, which toeherrsoht the anaog channel 8. : If the S & lben 27 of the Magaetrentlles 26 closes the anauguff- \ nong beror the pump piston 4 has blocked the supply channel β, the 70rderbeglnn on the corresponding amount gate.

In Fig. 4 a Yiers-cylindrical internal combustion engine 27 is shown. The fuel injection torques for the internal cylinders bind old 26, 2 $ _t 5ö and 31 beeeioiinei. Electronic desire 32, 33, 34, 33 is assigned to them. The setpoint value 36 of the required operating variable, see e.g. the Dreheahl, and the actual value 37 are input into the controller 32. Depending on the result file of the SoUwertiBtwert-Yerglelches, the desire 32 controls the solenoid valve of the fuel injection device 28 dcroh a manipulated variable 38. The actual control time 39 of the solenoid valve of the pulp & sprltBTorrlcatBitg 28 serves ale setpoint 40 TUr the desire 33 »compare 34 and 33 * 40 alt the actual opening times 41, 42 and 43 of the injectors 29 * 30 and 31

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25 «Nil 1970 D 70/57 - KP

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Claims (6)

1. Fuel spray device for internal combustion engines, where the inspritsaenge b »w. the? 5rdergeeohirlndlgkelt When a valve is activated, the one on the Druokselta ej & seordaeten AbatrSoÜcanal mastered, thereby rewarded, that the valve is a valve valve (18) which van ** lnea Iepulageber is teaerted. 2. Fuel neprits Torrlehtang naoh spoke 1, dadaroh marked «dad the solenoid valve (18) in etroelosea State is open. 3 · Fuels ineprlt »device according to claim 1 or 2, gekennselohnet in that it is formed as a piston valve Solenoid valve (18) has a load-relief base (25) 4. Fuel fuel «device naoh spoke 3» daduroh known that the transverse direction of the Entlaatangesohlitie » (25) Over the length of the same varies. «OootiienLOA P «Μ 4 • · f · ft * · »« ι » / MA KLÖCKNER-HUMBOLDT-DEUTZ AG · COLOGNE ^. HBl IDfU ι J KHD KLÖCKNER-HUMBOLDT-DEUTZ AO COLOGNE 25 May 1970 D 70/57 - TP R / Pr - 13 - 5. Fuel injection device according to one of the claims 1 to 4) characterized in that a solenoid valve (26) the intake duct {3) of the fuel injector controlled. 6. The fuel injector for multi-cylinder internal combustion engines Naeh one of claims 1 to 5, "characterized in that for each cylinder, a controller '* 2, 33, 34, 35) 1st provided by the ***" iner (32) the ^"r solenoid valve of the fuel injection device (28) for i one cylinder depending on the I regulates the drive size, while the solenoid valves for d? » rest of j gen cylinder depending on the timing of the ' first solenoid valve can be regulated. MOCO 11ββ RLOA