DE1921291A1 - Injection pump for internal combustion engines - Google Patents

Description

. ■ ·: *. ίίβ

ι · -. ¹ .- - vveber

? ·· ι ^! . ... ermann 1921291

No unc hen 2, Rosentol 7
Tel. 261989

Friodaann & Haler
In Hallein

. '.'., hi-.il 1969

Injection pump for internal combustion soles

It is known to use the fuel in fuel injection pumps to hold the engine parts, while the Triobwerksrana is already filled with fuel in such known constructions and there is a separate line in front of it, which returns the fuel to the fuel tank. On the one hand, such separate services represent an additional construction! " expenses, and are sttfrungs "zn matured and it occurs before," Ilen au oh on the Naohtell that the fuel be stvsrliökiiefttrdQrt under Übordruok in the fuel tank MUQ because aeist a Nlvaauuntoreohiöd, sualn- <?. a * t but "ine Conveyor line to be overcome is "This only has the consequence that the engine is filled with rough fuel under pressure", so that leakage losses from the engine room sa te tu raw tea nlnd | whereby the outside flttak en of the fuel injectors

will"

Invention relates to a Elnsprltqpapa Hit Br "nnk <* _f aftnaschlnen in particular for diesel * eotoren, anfielet which one Vorpuape and" Ine Hoobdruokpuape, the fuel of the Hoohdruokpmip · Wobot by the pre »

009819/1251 BAD ORIGINAL

pump is supplied under pressure. The invention failed from, at oinor eolohon injection pump the night si le dor well-known Triobverkesohaieruog by the fuel su vcraei · = den and consists essentially in the fact that ds7 Triebvaykeraua the Eiaspritzpurapo via a Droseolatelle or a Druokventil with a point dos Brennatoffwegee between the backing pump and high-pressure pump and via an IlUokführleitung bit of the intake line or is connected to the entrance of the Vorpunpe » This can be a simple embodiment of the invention Feedback from a transmission inside the Puiape be educated. In the dioaa way the fuel is in The engine equipment produced by the Vorpuepo Druok promoted and in the sucking gray of the Vorpuape, which under low Druok otoht, returned. This will make one side the engine noise from a bypass flow of the fuel Constantly flooded, which makes it quicker and easier Cooling is achieved and there is, on the other hand, a separate one Return line to the fuel tank avoided. It becomes through it a larger throughput of fuel through the engine room © nut »glicht. The erbindungsgesäOe have particular advantages Training then starts when the Vorpuape exits lies deeper than the Triebvarksrauis. In this case you can Ansoh'ijßstslle dor IUf okf o'clock line or overflow hole ie Trliviferous animals can simply be formed by an overflow, with the present invention seeing these parts in the engine compartment is arranged at a height, the oinea fuel level Id Tricbwerksrauid corresponds to the upkeep of the Probing of the moving parts is required. There it was! it is sufficient if the cams are immersed in the oil sump, it can Fuel level in the engine room below the seals of the wave entrance »through the Elnepritzpunpengehäuite, . > that leakage losses are completely excluded.

In the drawing, the invention is based on an exemplary embodiment explains «The drawing shows a vertical alteration through a few cleaons of a three-unit nopri of several places tzpunpe.

00981S / 1251

BAD ORSGSNAL

1 represents the egg pritapaBpcngehKnea, ca whose üntoreoito that Geh & uoe 2 Ä «r Vorpuapo is flanged on. 3 · 1ηβ the Pumponfcollientiüohsön the high pressure pump _s öeren Ko 1 Son k übe? Itolleustüssel 5 are operated by the dsn on the Puapemfelle 6 en $ eordne «te» Nocscgö 7, 8 eats the Vorpuapenkolben, which is driven by a pushrod 9 by a cam 10 and • ntgeget) the force of a spring 11 in one work »Rough 12 go · is pressed. 13 is there "An" ei? £ V <& ntil tmd Ik the pressure valve of the backing pump, via which ο β MIiBt a filter 15 and a line l6 the fuel is fed in from AnBmxgraxm 17 of the Hoohdniokpeep " 2k is the fuel teak, vßloher via a Jjoittmg 25 «it de« Ansangraura 25 of the backing pump ver & Ußdon let »

The / Uaeaugr »^« 17 of the Hochdrwokpiiaspe lot connected via a hole 18 and eiuent Droeeelquorschaitt 19 bit of the engine ··· raun EO. I let out a Lcob 21 forg * - · «just, x / elchee through a bore 22 old of the AsoaisgrmnQ 23 dor Vv ^ rpAxnp« is in connection.

The Looh 21 is arranged at such a letter height, AeG sine filling of the engine room & e «20 free to one level S * wHbrlciatet let, wflohee About dos * gröOtea Elnt & uohtlefe der dock 7 lies. Ee will eoeit of the Triebwerkeraua IK) rom power * itcff flooded, whereby uirke & de Looh a sufficient filling of the Tri ^ bKerkErai'serc 20 for Recognition of an insurance policy is guaranteed "

Patent fir

OO ^£ J 8 19/12 E 1

BATH ORIGINAL

Claims (1)

Claims f 1./Injection pump for internal combustion engines, especially ^ "for Dieeelaotoron, old a Vorpunpo and a high pressure pump, daduroh * marked that the engine room (20) the injection pump via a drop valve (19) or a pressure valve old olner place of the fuel balance between the backing pump and üoobdruokpuispe and over a Rliok guide line (22) old the Suction line (25) or 'connected to the suction nozzle (23) of the pre-pump 1st. 2 · Injection pump according to claim 1, characterized without the fact that the return line through an overflow hole (22) ! ■ Inside the puape is formed. 3. Injection pump according to Claim 1 or 2 _V daduroh characterized in that the connection to the fuel supply line or transfer bore (21) la engine room (20) is arranged at a height that corresponds to a fuel level in engine room (20) that is required to maintain lubrication of the moving parts required Is t ₀ - '* - 21.5.1969 / ti » 009819/12 5ί COPY