DE1526750A1 - Control device for the main nozzle of a carburetor - Google Patents

Description

HOQER --STHtLRHCHT -GRIESSBACH - HAECKER

PATENT LAWYERS IN STUTTSART A (- O r * rt j-; r \

te ~

Stuia | ig ofe bowl

for the

The BrfJirpiuag tea-produfft a St «uervorrieto; ttius for Qtä Im a Vei ^ gasers at Ot-fcOHKotopetn angaorönetes with an effective yentil cross section

_t inafeea special for one main nozzle with variable cross-section, whereby the lergaser has an actuating element for the creation of a BroaseXKLoppe »

There are% ej3tön S1? Euvorrientmigen for mit ^ en a i * ir * eciiaftliejoer Be1 »r £ e% düroli SrÄeijgüng ariner Cremiaehe ixt Seillaatgeliiet and kr ^ ts are paid at Voip & s / t a © Il _e Pur such taxation are from the intake iferdruolc or the

: - 2 -

SQ ms 5/0 46 0

• BATHROOM. - ORIGINAL

A 35 286 b
b - 93
8 * September 1966

steered Eix ^ iehtünen. provided, which throttle the through a nozzle, the cross-section of which can be changed by means of a konia chön Teillaatnadel but these are known SteuervorriGEtiingaii

not avenged all the requirements that an irlrfc · »

at
aGhaftllGlien ■ operation must be set up a Tergr ^ aer, since in the area of relatively high Brshsalilen the amount of fuel escaping from the injectiondttaen of the ^ ergsasrg more than the air weight penetrating the carburettor per unit of time increases "iniTol this is the case at high speeds and Yoll'-Laat The engine is supplied with a mixture that is too rich, which leads to high fuel consumption

The invention is therefore based on the task of designing a control device of the type mentioned at the beginning? that at full load the semiseh is automatically emaciated after reaching a certain hot or speed * This object is achieved according to the invention by _{3 connecting} the actuating member with a ßucl £ guide member for the ¥ valve member and with the latter via a tera delay device in such a way

one

is that with further opening of the throttle valve the effective one Valve cross-section can be enlarged first and then laterally can be reduced in size afterwards. Aleo ran the engine Accelerate an extremely rich mixture available

- 3 -

Λ 35 286 b -r

b -. 93 ■ ■ .- <■■■■ 's

8 «SepteKfesr 1966 - *> / 5 -

represents _R but nacli reaching the Drosselfclappeiistelliisg-- and the respective load corresponding speed of the motor -is thin the mixture so on. that -the "air added fuel amount of the carburetor per geiteiaiieit durehsetsesden Luftgewieht corresponds ,.

Iveitere- advantageous developments of the invention performing Merlanale emerge from the patent claims lind / or from the following description, the explanation of the _f a GasIS particularly zwecTnnäßigen _r in the drawing geseigten Ausföhrungsbeiapieles an Inventive Steuervorriclitmig used; ea point

w -1 a cut after the line 1-1 in the Irig ₀ 2.

ana durcli a bit of a control according to the invention \ rorrichteng Terseiienen Tergaser, which is shown as a brake carburetor '

Fig. 2 is a section through a stop device on the

according to FIG. 1.

A valve needle housing 12 is attached to a release tube housing 10 of a brake nozzle carburetor. a web 16 supported mixing tube 18 gives ^ ■■ && the spray nozzles 19 are provided »

90 988 5/0 460 - 4 ■ -.

BATH ORIGINAL

A 35 286 1) Λ -

b ~ 93 /

8c September 1-966 '' - '■' X · -

In the M: i .schroht a riser pipe 22 having transverse bores 20 is sunk and a lighting correction nozzle 24 is screwed in for the air supply. Further, a Zuflußbohrung leads 26 in Luf Irohrgehäuse 10 imn an unillustrated float r "· comber au a ring designs provided by Singnut 28 eine3 overall W v; j.nd.e piece 30 of the Biisßnnadelgehäuses 12 and a Gewindeaoh» tion 32 ISS Luftrohr ^ geLätise 10 formed- wiröc lock i3t in the air tube with a ¥ slle 34 nor a throttle valve, not shown in the usual way.

In the nozzle nr.adelgehäuse 'r2 is a wide _T first bore 36 is provided, see under B-EDUCATION a first shoulder 38 a mean j second bore 40 adjoining the, the

Again: forming a second shoulder 42 a narrow inner thread 46 is provided at the end of the third bore, the third bore 44 -set into which a main nozzle 48 is screwed ~ uad a ÄnscKLsgsteuerzylinder 52 ge ~ pierced "v / obei from voräeren end of the pump cylinder a connecting channel 54 zvm front end of the second bore 40..erstreckt _s and gegenü & er kanale the limslaiduBg this compounds in the Bohrimg 40 starts a Brosselkanal 56 ^ of ungsfät ; r to the center of the third bore 44 leads toad the cross section of which can be adjusted by means of a throttle screw 58

. den . ';: ■ _ ■■ · ■ ■ - ■ -' is ₀ "'In addition,'sin'cT at least js ^ ei ^ / iron, the built-in

909885/0460

BATH ORIGINAL

A 35 -286 b 5

b - 93 . '

8 * Seftaraker 1966 -Jf-

formed space mil; dor drifting bore 44 connecting

59 provided., At the right E de of the nozzle ^; a AbsetiluÖplatte-e 60 is attached, the iiiitd the SiiseimiaidelgelaauB © eirra clux-oiigehenae 62 QiaigirslJaiöiit _o

In the bores 36.4O wad 44 a bosom needle 64 is arranged, which drilled with a stepped body in the

44 and is guided in the central bore 40 and the front end of the effective cross-section of the main nozzle s "fceuerndea needle part 66, approximately in its center a concave shoulder 68 and at its lower end svrai hook 70. Furthermore, one opens into the Central Jjängoböhrung 70 provided for the nozzle needle on the side into the third bore; 44 ^ and others are between the hooks 70 in the device bore 36 _o

The bottle 70 holds an ilJopf 74 for transferring bottles 76j lies against a Hie * 78, which in a Auslenkbaron Teilstüek SO of the membrane 62 is provided; this feilsiriiek lsi; in its Sörmalstellüng convex in In the direction of the Abeliluss plaza, 50, as will be explained later will * Zviisöhen the first shoulder 38 and the transferring right piston 76 iat a first compression spring 82 arranged while

BAD ORIGINAL 9 03 »t 5/0 460

A 35 206 "ο

b - 93 ■

8 "September! 956

between the right end face of the bosom needle 64 and the head 74 of the transfer train / zolaesis 76 sine Ewölto 84. ^. ■: -. ■■■ ^;

Im P-uiHi enaylinder 50 ^! ial · on ".mredeipea EMe 86 hurried AbschlußpTati-e with EFIN ^ -r ^ Yentilboainmg B, and further a Pumpenkolben.-90 * arranged ^wherein; dör letstsra with eiaei * piston rod is one of -ifejäfrraai ^r o2 Fali 91. formed; s ~ - bellows 92 durclisetsb- dsr ^ in a ^ r Birigmn; 94 aar Xolbens-öaaig attached iat _o yor dar Abacli'Iußpla-bte 86 iB ± south of the mouth of the Yerbindyngskanal 54 a Teatillmgol- '96 sageordaei;. and further Yentilfe balls 98 tiiacl 100 are in Yeatilkanälea 102 and 104 des Pur-rpezikolbeiin 90 iiat-ergobrachtj ^ ol> ei-die Yentilku3.el 1G0 -a-ator of the building of an Ieeier 105 3teh: b _o Finally the pump cylinder 50 Milter dsm Pmapen ^ ^ piston 90 via a channel 108 uit άβτ erston Bdhrvrng 3δ ^:

In the Ansciüageteue ^ zjliiider is an iait ainem AaacKfei gbotL ^ sea ' 110 ΤΘΓΒβΙϊβηοΓ Εο1ϊ) Θ2ΐ 112 aagsorane'i «who means spä% är closer basehyiebener Haste- 114 imd i1§ -vG ^ s1 »e3.1t ^ isrdea kaazi ^ In the AbsGfiliiSplatte 60 siad eis Itöuii113 fär asu bolt 1. TO «aine Ausäeiuaüias 120 for the aiislsairbare 80 of the membrane 62 - and a fiterer Isöah 122 for oils

A 35 236 b
■ b -.93
September 8, 1966

sfenge 91 "furthermore, two double-barreled levers 128 and 150 are articulated to articulated eyes 124 and 12S of the closing plate 60," whereby the lever 128 rests with one arm 132 in its one end part against the anchor bolt 110 and with a lase 1.34 over the Offer..78 the deflectable section 80 of the Keiabrazi. 62 actuates: the other lever 130 actuates the pump piston 90 "The according to Pig" 1 lower ends of levers 128 and; 130 werden'vom throttle linkage 136 _s interspersed with the si © practice? Si / ei Bruelzfedern 138 and Ii-O as well as three Hinge 142? 144 and 146. coupled

The wedges 114 are best shown in the figure "2" and IIS in an Aiisnelasmjg 146 of the Büsennadelgehaus

- - which Eeil vobei 114 via an articulated rod with Dej a inoe-e of an ax its other end to Msensaclelgeliause 12 attached Flecjirohrbogens 152. 1st _c - while the wedge 116 sngreift via an articulated rod to a ridge 156, of the cerium one end side of a JaohlEylindrisciien BaroisetsräGse 158 is attached? This -drd tgs der Geleakstimge 154 dtirclisetst and is attached with its other end to Süsennsdelgeliäiise 12 The pipe bend, 152 is via a line 160 alt a nods shown Wäzsaefüliler ± m Kijl ^ lv? agaer; Oßer Ölsmapf des- zzüge - **

Tes'ibiiHden
liörigen YevBTsmmngsmQuo ^ ß / vm & - 'Leitimg 160 yelled

152 are with oineiü hot pressure medium

. - 909885 / 0A60

filled «., '■■■

ORIGINAL BATHROOM. "8 -

A 35 286 b

b.- 93 ^

8 »September 1966 - the following film will now describe the mode of operation of the control system according to the invention; the Pig, 1 and 2 show the carburetor according to the invention ± n a position which is assumed after a long period of full throttle! in addition, the piston 112 is most extended out of the housing.

When idling, the throttle linkage 136 is opposite to that in Pig «I position shown shifted to the left »so that the Pump piston 90 and the nozzle needle 64 together with the transfer piston 76 under the influence of the compression springs 82 and 84 in their “In these positions the nozzle needle releases the main nozzle 48 completely” all of them with the inflow bore 26 communicating spaces within of the nozzle needle housing are filled with fuel.

If the throttle linkage 136 is now shifted to the right when accelerating, the levers 128 and 130 are counterclockwise pivoted j until the arm 132 strikes against the stop pin 110 By pivoting the two levers, the transmissions are grounded piston 76 and the pump piston 90 quickly moved to the left. presses, whereby the one in the pump cylinder 50 to the left of the pump · » piston SO located because of the throttling by the throttle screw 58 and because of the small clearance between ' the nozzle needle and egg middle, second hole 40 in the

909885/0460 - 9 -

BATH

152675Ö

A 33 286 b

b .- ■ 93

8 "September 1966

essentially via the check valve 100, 1:04 in the rope of the pump cylinder lying to the right of the pump piston, «Although the compression spring 84 is tensioned by shifting the transmission piston 76 to the left, the nozzle needle 64 cannot follow the rapid shifting to the left of the transmission piston it cannot displace the fuel located in the middle "second bore 40 between the second shoulder 42 and the concave shoulder 68" quickly enough because of the throttle screw 58 and because of the check valve 96 * 88 ". Thus, the nozzle needle decreases the effective cross-section of the main nozzle 48nur langmm, wherein via the longitudinal bore 72 in the nozzle needle and the Zuflußbohrung 26 fuel is sucked from the float chamber ₀ give full gas The period between which and the reaching of the drawn left end position of the nozzle needle depends on the Dimensioning of the compression spring 84 and the setting of the throttle _{screw 58 from o} This can now be set for a specific type of vehicle and engine so that the nozzle needle does not reach its left end position until the motor vehicle is in its position corresponding to the gearbox and the gear currently engaged Has reached maximum speed; then the motor is ~ n & agency of the over-rich (reniisches he "receives a relatively lean mixture during the acceleration process is supplied. If now removed gas" d * h _o the gas mixtures.

BAD ORIGINAL ⁹ 09885/0460 ~ 10 -

A 35 286 b - * O

b - 93

8ο September 1966.

rod 136 shifted to the left, so the bellows 92 or a return spring (not shown) brings the pump piston 90 back to the right, and the compression spring 82 pushes the transfer piston "(G to the right, v / o with this via the hook 70 also the nozzle needle 64 with the fuel displaced from φ of the wide first bore 36 to the right of the nozzle needle passes through the channel 108 into the pump cylinder and from there, together with the fuel displaced from the pump cylinder to the right of the pump piston 90, via the check valve 98, 102 into the pump cylinder to the left of the pump piston bayο the check valve 88, 96 and the connecting channel 54 in the middle bore 40 between the concave shoulder 68 and the second shoulder 42,

Since a richer mixture is required when the engine is cold, the flat tube bend 152 is designed in such a way that when the engine is cold, the wedge 114 is pressed into the position shown in Pig, 2; the engine warms up, so heated See also the pressure medium in the heat probe and so that this expands in the line 160 and in the flat pipe bend and the wedge 114 of FIG * 2 pulls down _o When accelerating permit consequently piston 112 and ANS impact bolt 110 so that the lever 128 can be swiveled further in the opposite direction »which leads to a stronger throttling in the main nozzle 48« has the same effect, a pressure reduction of the outside air »

90 9885 / G4 60 ~ ϊΊ ^

BATH ORIGINAL

Λ 35 286 b

b ~ 93

.8th. September 1966

those with a corresponding; "Associated with a drop in air density is. so that a less rich mixture is also required will; In this pail the barometer box 158 expands and pulls the wedge 116 upwards according to .T? ig, 2.,

In order to enable a very quick acceleration, wherein 'in FIG _c exemplary embodiment illustrated 1 in the region of the middle j svreiten bore 40 still has a longitudinal groove 164 is provided which is so-'weit easily absorbed toward the second shoulder 42', that when The nozzle needle is pushed back and the fuel can be pressed directly into the wide, first bore 36 without hindrance «

■■■■■. "- ■ ~ 12 -

BADORIGiML 9D9885 / 0460

Claims (1)

/b.-95 TJL 8 _O September 1966 Patent claims: Control device for a valve arranged in the fuel inlet of a carburetor on Otto engines with a valve member _f controlling the effective valve cross-section, in particular for a main nozzle with a variable cross-section, the carburetor having an actuating member for adjusting a throttle valve, characterized in that the actuator (I36 _f 128 »130) with a return member (50, 90) for the valve member (64) and with the latter via a delay device (76, 84, 68» 42, 58, 90) is connected in such a way that at by opening the throttle valve again, the effective valve cross-section can first be enlarged and then reduced in time * ^ 2 «. Device according to claim 1 "characterized in that the delay device is adjustable with regard to the delay time * 3 "Device according to claim 1 or 2, with a conical nozzle needle controlling the effective cross section of the main nozzle, which is displaceable in a housing accommodating the main nozzle, characterized in that the loading. actuating member (136 "128 ₅ 76) at least at his /-·■---.■ 90 9885/0460 - 13 - ; ■ '■ ^v . ■'. '■■■■. ■. ■ "■■■". '■ - IAD-OBiGlNAL A 35 286 b b - 93 8 _β September 1966 152675C 13 Actuation in the visual direction of the nozzle needle with this is resiliently coupled »and that a portion (68) of the Nozzle needle (64) when it is moved in the closing direction can be pushed into a displacement chamber (42, 40) of the housing (12) filled with a pressure medium, the one Has drain line (56) with adjustable cross-section. 4 »Device according to claim 3» characterized in that the Pressure medium fuel is » 5. Device according to claims 3 and 4, characterized in that that the nozzle needle is arranged in a remote, at least one shoulder (42) forming bore (44, 40) and in the further cable (40) of the bore facing away from the main nozzle (48) with a thicker one, in the direction of the conical one End of a shoulder (68) having leilstüok is mounted, and that the Verarängungsraua sswischen the shoulder of the nozzle needle and that of the bore is provided. 6. Apparatus according to claim 5 »characterized in that the drain line (56) from the displacement space su one that strange end surrounding one-space leads into one Inflow line (26) of. a float chamber of the carburetor flows out * ■ - 14 - 909885/04 80 BATH ORIGINAL A 35 286 b b - 93 September 8, 1966 7α device according to one or more of claims 3 to 6, characterized in that a throttle screw (58) is provided in the drain line (56) » 8 _e device according to claim 6 or 7 »characterized by the entry space with the wide rope $ 6) of the bore
connecting bore (72). 9 »Device according to claim 8, characterized in» that in . a connecting channel (54, 50, 108) between the wide Part (36) of the bore and your displacement space a one First check valve allowing fuel flow to the displacement chamber (88, 96) is arranged, 10 «Device according to claim 9, characterized in that a pump (50, 90) with a pump piston (90) operated by the actuating element is provided as the return element between the _{first check valve and the wide feil (36 -) - the Boteimg?} in which sin spring-loaded wide check valve (100, 104> 106) for a fuel flow from a front "pump chamber between the piston and the first check valve
(88, 96) to a rear umpeiaraum between the piston and a wide rope (36) of the bore and a third check valve (98 _f 102) for a fuel flow from the rear * front pump chamber is arranged _o 9 098 85/0460 ^ 15 " BATH ORIGINAL A 35 286 h ΐ> - 93 September 8, 1966 11ο device according to one or more of the preceding claims. _{This is characterized by a stop (112, 110) for the actuating element (128) O} which is controlled independently of one another by a barometer box (158) and a temperature sensor (160, 152) 909885/0460 ORIGINAL BATHROOM