DE2048863C - Fuel injection device for mixture-compressing internal combustion engines - Google Patents

Description

The invention relates to a fuel injection device for mixture-compressing internal combustion engines, in which a rotary distributor for distributing the by a continuously delivering fuel pump Provided with constant pressure supplied fuel to the individual internal combustion engine chambers is which rotary distributor has a distributor stator with several, each assigned to one chamber Distributor beans and a cylindrical distributor rotor rotatable therein with a one defined Form having, the distributor bores opening distributor groove, wherein distributor red no and distributor stator for mutually regulating the amount of fuel to be supplied to the individually: n chambers are axially adjustable and the axial relative position of distributor rotor and distributor stator through several negative pressures taken at different points in the intake air line d (r internal combustion engine is controlled by a first negative pressure on the to take into account the engine speed narrowest point of a Venturi tube in front of the throttle valve, to take into account the weight of the Internal combustion engine chamber air filling a second negative pressure in the Sarr.melrohr between the throttle valve and internal combustion engine chambers and also a third negative pressure has been removed.

A fuel injection device for mixture-compressing internal combustion engines is already known (USA. Patent 2 925 075), in which a rotary distributor for distributing the through a continuously conveying fuel pump with constant pressure fuel supplied to the individual Brenu engine chambers is used. The rotary distributor has a distributor stator with several, Distributor bores each assigned to a chamber and a cylindrical one rotatable therein Distributor rotor on, which controls the distributor bores, the rotor and stator to regulate the The amount of fuel to be supplied to the individual chambers is mutually axially adjustable.

This axial adjustment takes place via two negative pressures, which occur at the narrowest point of a Venturi tube in front of the throttle valve in the intake air line or behind the throttle valve and in front of the intake valves removed in the intake air line and attached to the axially adjustable rotor via a linkage be brought to action. Furthermore, to take into account the accelerator pedal position or the Position of the throttle valve is a mechanical

stan «c be provided, which the two actuating rods for the throttle clamp or the axially adjustable rotor coupled together.

The mechanical linkage / ur coupling of the pressure flap on the one hand with the rotor on the other hand is disadvantageous in several respects. On the one hand, the arrangement of the injection _{device makes it difficult, since} it is not only in a favorable position in relation to the rotary drive of the rotor, but also in Pii for Gk

Sta
can

crowd. The desired assignment is ^ urc appropriate design of the tax channel «... Causes grooves in the outer surface of the rotor.

The invention is Autgabe zugrunut fuel injector of the initially aiifc · *> nen way of introduction which internal combustion engine is automatically provided in the chambers ei _{j (IBS} _ without any linkage mu.ii ^^ ^ ^ at jeuc

HinhÜL-k on the rotary drive of the rotor, but the same state an optimally cooperative also a favorable position for the linkage coupling the fuel-air mixture was reliable. lun "can be taken into account with the throttle valve.., - that is enough

l v.as because of the proportionality terminate space This is according to the invention daciurcn cmc,

Conditions in power vehicle drives in the third underpressure in the immediate area of the babble can hardly be removed, or only under the largest throttle valve, can be easily realized in a tiukcite. In addition, the 8 ^c B ^e " ^se ' ^tIge _r ^! F' _s 2 _n HeßliiTh un-!. '.. Accuracies in the control are not to be used. Rotor and stator against ^F ^ e ^r <raL from ^ That means, for example, it is done _{depending on the temperature, and dall me: mc - the} vcn on the connective unity «: / wischen menen negative pressures to the environment ^v « · ■ ε _f _

. ! flap and rotor. Attempts have closing spring force and to le.l / u. unm.itcIbarcn Ik -shows that with the known [- / ,, direction in the ao impact of the rotor or ^ύύ * ^^^ Lviroh- Men operating range of an internal combustion engine at least that at the narrowest MUK ^ t1, -nimales air-fuel- Mixture is achievable. res reduced vacuum / ur unm. übarcn ,, Be beyond includes a Kraftstoffe.nspritzein- auhchlagung of the rotor or stator ¹ ^ ¹ -;

.M * for internal combustion engines with one from With the invention .st '"" special ^

, Distributor stator and a rotatable so-, 5 position on the basis of re.bungs ^, ual adjustable distributor rotor to the state of the ^Tem P ^e L ^at "[ ^einW \ ^ ^U "f;"S ^ s mechanical Ge-Mk (German Patent specification 666 491), with the zende source of error dfrsUlkno sm «-h ■. ^

.. avoided several, each one internal combustion engine rod which bcondts en P kan--.er assigned distributor bores and an on and for system adjustment. Wc η inwα e, fuel pump connected inlet before 30 ger leak fuel directly from the dtm ^ tator ^ e, η are, in the stator a bush with several, each sucked. The lack of a median s hen C ^ sUng white associated with a distributor bore, radial, also advantageous in so far as a ^ ^ incrj g ^ J _mil ..i, m fuel inlet communicating holes in the "^^^" ^ [^ K design gen is rotatably mounted, and the rotor is given by two plates Re. em ^ tc Ba fi "," inner channel interconnected grooves 35 by purely 1 "'™" ^ ** ™ ^, ° reliably defined shape in the outer surface has, from <™haben «eü ™ to ^ ™ ^η Β ^ f ™ l

which one with the radial bores of the sleeve that can be rotated in the stator to control the input

the beginning of the spntz and the other with the distribution boom state of this | P.

_Rest in the stator to control the injection _{switch 4} o fuel-air mixture

^ - ^a = ^: ^{k connected} to a drive line- ^ d ^

sen, and fuel is drawn from a pump piston ^^^

fed to the rotary distributor, with the pump-protruding, ^measure * K * ™ ^ ^a f _u dominating

■ piston speed always corresponds to the speed of the 45 even in the particularly difficult

Rotor corresponds. The rotary distributor has a drainage area. i

Regulation of the amount of the individual internal combustion D.e Erfmüung allows

amount of fuel to be dispensed d

intended in two ways. By turning the sleeve in the. Stator on the rotor is a so-called

called mixture control connected for example

an enrichment or impoverishment of the individual

NEN internal combustion engine chambers abandoned

Fuel-air mixture according to the respective

gen altitude for flight rotors. The rifle is from

Operating personnel adjusted accordingly.

Furthermore, the rotor of the rotary distributor _au of the drive shaft facing away from a barometric f SeUe tin applied against

<™haben «eü ™ zur ^ ™ ^η Β ^ f _Einric htunl achieved that the Kay mern of the mi _

provided fuel power tmase mc b ^ ^ _tes

condition these h | en en ^^ ^mm

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share the ^ab
outstanding

also one

De Erfmüg g ^? _{from the}

hydrostatic bearing of the RoK »rs im

^ ?? «£ ^ _η ' Si s storage comes ftst ° ™ hrang L« ^ =, _bar ^e _{kejt des}

again ^ -trem chten V _{em nndHchen}

^ ^{im St} »^, ² ^^ _c ' _{r the individual} n Brennkraft- and ^ ^ex ^ t η Rege" gi fuel quantity.

^Ma ^ ^C _n ^h ; "™ ^m w _e " formulations of the invention are advantageous ™ formulations

^^^^^ iSZ ^ ernKn the following sin ^a ™ £ for example be

Invention based on the drawing ο P. _here

then wrote, y-weus

tor against the action of the spring loading it "°" ^s ™ ^r ' ^s '«; _L execution standard.

axially "isteilt to a performance control zn = s - e. g · _S H 2 ■« £ ^ ™ _'n "* ^us" _{"d" 6} mi feiche parts nevertheless..

a Rotationsverlciler 1 for the distribution of the engine 5 and thus the rotor 9 Bcrächieine not shown, continuously promoting gene, so also the different control fuel pump Via a supply line 3 with a constant duration of the bores 6 in the stator 7 through the triangle Pressure supplied fuel to the individual kige groove 8 in the rotor 9 at different speeds Chambers of a gasoline internal combustion engine5. 5 of the Rotois9 in the same relative position

The rotary distributor 1 consists of one with the stator 7.

Distributor bores 6 provided distributor stator 7 The said three negative pressures act thereby

and one with an approximately triangular distributor groove 8 on the rotary distributor 1, that with accidentally provided distributor rotor9, which is rotatably mounted in the Stator7 underpressure, ie decreasing absolute and from the internal combustion engine 5 io pressure in the manifold 22, a reduction and is driven. The absolute pressures to be supplied to the individual chambers of the fuel quantity in the venturi tube 21 and at the fuel quantity to be supplied with increasing negative pressures, ie decreasing pressures, is determined by the period of time during which the throttle valve 20 increases the individual bores 6 in the stator 7 through the triangular chambers of the Internal combustion engine 5 to be supplied groove 8 in the rotor 9 are controlled. This period of time 15 is connected to the amount of fuel.
depends on the axial relative position of stator 7 The rotor 9 is in the stator 7 by a tension spring

and rotor 9, which are mutually axially movable drag coupling 28 and one against the spring, by virtue of the tension spring tow coupling 28 directly

The rotary distributor 1 has so many outlets axially reducing the negative pressure acting on the rotor 9 on how the internal combustion engine can be ordered 5 chambers. At least the first of the three in the sits. Each chamber is through a line 11 with suction air line 19 removed negative pressures connected to another outlet 10. The redness acts directly on the reddening without any actuator 11, the fuel flowing therein is entered via a gate 9.

pressure-controlled valve 12 close to the inlet valve. In the embodiment of FIG. 1, the im

the associated chamber in the associated Luftan- 25 Venturi tube 21 taken negative pressure and the suction port 13 injected. For a better overview - in the immediate area of the throttle valve 20 ablichkcit because of is in the F i g. 1 and 2 only a taken negative pressure superimposed on each other and in Fuel line 11 with valve 12 is shown. transferred to a combination vacuum. this

The fuel injection device, which is driven by an electric motor, does not continuously simplify the fuel injection device The fuel pump that is delivering nuely is on the pressure side 30 insignificant.

Via a pressure regulator and the fuel line 3 The combination vacuum is immediately

with the rotary distributor 1 and on the suction side via a rotor 9, while the one in the collecting pipe Another fuel line, in which a force 22 between the throttle valve 20 and the internal combustion fuel filter is switched on, with a fuel tank machine chambers removed negative pressure via a in connection. The actuator 29 controlled by the pressure regulator and the tension spring tow coupling 28 Fuel flows through a third fuel line, acting indirectly on the rotor, around its axial position Bypass the filter again to determine the suction side of the treatment in the stator 7. This is the actuating fuel pump 2 back. This is in the drawing member 29 via a two-armed lever 30 with the not shown. Tension spring tow coupling 28 connected, namely

The axial relative position between the rotor 9 and 40, the lever 30 with an arm 30 a on actuator 29 stator 7 is hinged to the control by the rotation, ft to the other arm 30 it engages manifold 1 to the individual Brennkraftmaschinen- of the tension spring -Tow coupling 28 on.
chambers to be distributed amount of fuel in the case of the embodiment according to FIG

Direction of an optimal fuel-air mixture in the Venturi tube 21 decreased negative pressure unmitbei the various operating conditions occurring 45 directly on the rotor 9 to determine its conditions of the internal combustion engine S taking into account the axial position in the stator 7, while the im uninitgung the dependence of the opening duration of the adjustable range of the throttle valve 20 decreased Bores 6 through the groove 8 of the speed of the negative pressure and that in the manifold 22 between the Rotor 9 by three negative pressures in the intake air throttle valve 20 and the Brennkraftmascbinenkamleitung 19 of the internal combustion engine 5 determines, namely 50 mern taken negative pressure over in each case one borrowed firstly through the Venturi tube coupling 28 located in front of the narrowest point of an actuator 31 or 32 and via the tension spring drag of a throttle valve 20 indirectly to the rotor 9 to the inlet 21 reduced negative pressure, secondly, come through the kung to adjust its axial position in the stator 7 to be determined in the immediate area of the throttle valve 20.

The underpressure taken and thirdly by the in 55 The actuators 31 and 32 are via a two-port manifold 22 between the throttle valve 20 and the moderate lever 33 with the tension spring tow coupling Chambers of the internal combustion engine 5 removed 28 connected to an arm 33 α at the train negative pressure. spring tow coupling 28 engages with the other

The third vacuum is practically independent of arm 336 on actuator 31. Lever 33 is on from the internal combustion engine speed and taken into account 60 actuator 32 pivotable about the pivot point 33 c essentially considers the weight of the combustion bearings, which therefore changes with the lower chamber air filling, while the two remaining unpressure in the collecting pipe 22 parallel to the axis of the red pressure essentially shifts the speed of the combustion distributor 1.

1 sheet of drawings

Claims (5)

Patent claims: 1. Fuel injection device for mixture-compressing internal combustion engines, in which a Rotary distributor for the distribution of the fuel pump using a continuously delivering fuel constant pressure supplied: · :; Fuel the individual internal combustion engine chambers vo: it is seen which rotary distributor has a distributor stator with several distributor bores each assigned to a chamber and a cylindrical distributor rotor rotatable therein a distributor groove which has a defined shape and opens the distributor bores, where λ crteilerrotor and distributor stator to regulate the amount to be supplied to the individual chambers Kraftstotimenge are mutually axially adjustable and the axial R-'aiivstellung of Distributor rotor and distributor stator through several ao at different points in the intake air line the internal combustion engine removed negative pressures is controlled by taking into account the engine speed a first negative pressure at the narrowest point of a venturi before Throttle valve, -only considering the weight the internal combustion engine chamber air filling a second negative pressure in the ^ ammelrohr between Throttle valve and ßrennkraftmaschinenkammern and also eii. third negative pressure is removed, characterized in that that the third negative pressure in the immediate area of the throttle valve (20) decreased is that in a known manner, the mutual axial adjustment of the rotor (9) and Stator (7) takes place against spring force exclusively dependent on vacuum and that the three removed Partly to adjust the spring force and partly to act directly on it of the rotor (9) or the stator (7) are used, with at least the negative pressure taken from the narrowest point of the Venturi tube (21) serves to directly act on the rotor (9) or stator (7). 2. Fuel injection device according to claim 1, characterized in that the axial rielativstellung from the rotor (9) and stator (7) is controlled so that with increasing negative pressure in the collecting pipe (22) the amount of fuel to be supplied to the individual internal combustion engine chambers sidi decreases and with increasing negative pressures in the Venturi tube (21) and increased on the throttle valve (20). 3. Fuel injection device according to claim 2, characterized in that the negative pressures in the Venturi tube (21) and in the immediate area of the throttle valve (20) by superimposing a combination vacuum are convicted. 4. Fuel injection device according to one of the preceding claims, wherein the rotor of the rotary distributor via a tension spring tow coupling and by one against the Spring force of the tension spring tow coupling, negative pressure acting directly on the rotor, axially adjustable is, characterized in that the first negative pressure in the AnsaugMtleitung or the Combination negative pressure derived from two of these negative pressures on the rotor (9) directly and the remaining negative pressure or the remaining negative pressures via actuators (29, 31, 32) and the tension spring tow coupling (28) are indirectly brought into action on the rotor (9). 5. fuel injection device according to claim 4, characterized in that with several the associated actuators (31. 32) by at least one Hebei (33) via the tension spring tow coupling (28) together act on the rotor (9).