DE1576579A1 - Air pre-cleaner for internal combustion engines - Google Patents

Description

Dipl. ! Pi Helmut Zoepfce

l · · ;. ^f on fan wo 1 te
δ Müricitcn 5, Erhardtstrasse 11

.International Toughest Company Sep 19 - 1967 401 North Michigan Avenue
Chicago, Illinois (Y.St.A.)

Air pre-cleaner, fill * internal combustion engines

The invention relates to an air pre-cleaner for internal combustion engines, with a fan serving to generate a cooling air flow , a cooler arranged in front of this and a line arranged above this and connected to the air cleaner of the internal combustion engine, which is connected to the outside air at its free end.

Ds has been long recognized that air pre-cleaner are suitable in order to exclude especially heavier dirt particles from the air • divorce. The main advantage of such a pre-cleaner or pre-separator

is that the hy.w, filter one of the air purifier. . _o Air supplied to the internal combustion engine as a result of its pre-cleaning - to enable a longer service life of the air cleaner before

** · This must be done »In agriculture machines have to be used

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Q can be used very often when there is an extremely high amount of dust, so

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(sj c] ate without Vprreiniger the actual air cleaner frequently off must be built and cleaned '. This can possibly have. After a few hours be the case "so that the cleaning of the

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Air filter on the fiIde must be made. Del this improvised maintenance work can easily damage the air purifier or not install it properly »so that then unpurified air directly into the working cylinder of the engine got. The foreign bodies carried away by the air have a grinding effect and can lead to rapid wear of the Motor parts sliding on top of each other · The use of a pre-separator can therefore be justified.

Many attempts have been made to separate larger dust particles from the engine intake air before it enters the air cleaner. In most cases, centrifugal separators (cyclones) were used that were built into the air cleaner itself. Above all, it has proven to be disadvantageous that the centrifugal effect necessary to separate the dust particles from the air creates a pressure difference from the motor and thus requires additional motor lines Drop in engine power.

You already have the problem of air pre-cleaning trying to solve this by generating a KUhlluftstront by a fan driven by the motor, through the which are in a special room to the air purifier

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led combustion air entrained dust particles will roll, i.e. not even get into the air purifier Such a construction is e.g. described and illustrated in U.S. Patent No. 2,203,407.

The present invention is based on the object of providing an air valve of the type mentioned at the beginning in its mode of operation still to be improved · This is achieved according to the invention by the fact that at a distance in front of the end of line I connected to the outside air a baffle is arranged "which, together with a radiator cowling, has a chamber" with a lower, essentially parallel one The air flow opening, which lies under the direction of the flow of cooling air, forms “the greetings of which are so bane that the The speed of the combustion air rushing through is lower is than the speed of the cooling air flowing through the radiator. In this way it is ensured that sualndeat all Remove dust particles from the cooling air flow through the cooler be sucked through »so in front of the air purifier DadurÜh needs its maintenance and cleaning to a large extent longer periods of time are used

In a simple embodiment of the invention, it is provided that the baffle essentially perpendicular to the a ^ rösmngsrichtung des KUhlluftstroees is arranged and the su the air purifier leading line above hall »the passage opening of the chamber in 'diet ·· joins. This ensures that the into the opening

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air flowing into the chamber at least briefly across the Cooling air flow flows.

Bin from filhrungebel game of the invention is shown in the drawing and is described in more detail below. There are:

u Fig 1 - the front part of a tractor tait the © rfindungs-

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according to trained air pre-cleaner in perspective

Partly not,.

Fig. 2 shows the upper part of the tractor shown in Fig. 1 - view ». -. ". ': -"".. * .." -:. _: '_ _ ■. ■■'

Fig. 3 «a section along the line XIX-III tier Fig. 2,

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Flg. 5 shows a section along the line V-V of FIG.

Vie au «Flg. 1 shows, the only partially shown tractor 10 has a radiator cover 2 adapted to the engine hood, with flange 14 facing inwards. Behind the flange is a cooler 16 which is partially enclosed by "fer! OlhlerireyicleiduFig ί2" and which has an upper water tank 18 and a cooler block SO. On the back of the cooler 16 is a fan 22 AR | ^ »ord» * f _t the van ddü drive motor, not shown, is driven and air is sucked in through 4mn ller,

'via an effective heat dissipation of the * coolant »of the engine to the ·

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Ensure air. De * »fan 22 generates a cooling air" Ström, the ASU substantially perpendicular to the fan-Unilaufebene moves and flows at a speed "which is dependent on the speed of the motor, Ira upper part of the flange are \ k Awei openings 2Ί and 26 intended of which only one is used for a given engine ”However, two openings are therefore necessary to allow the different arrangements of the air cleaner on different engine types, such as gasoline engines | and diesel engines. The unused opening is closed by a © plate mit27angegeben ira present embodiment and Andem flange \ k sealing contact "To the unused opening 24 1st line connected 28 to the non-illustrated .Luft"'cleaner or -filter of the engine is connected. The line 28 is the only central element to convey air to the air cleaner and to meet the intake requirements of the engine «,» I.

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A guide plate 30 is attached to the flange 14 by means of tube bolts 32, since "has angled Defeatigungalaschen 3k utvä 36 on its two seldom angled Defeatigungalaschen 3k" in order to be able to keep the flat part 38 of the Leithleches 30 at a distance from the flange ik . In this Ausführungsböispiel the flat part is 38allerdinge by Absetsungan ^ O ^ 2 and interrupted the Jjedoöh are only provided ue the headlights _p the Ihxp "And be able to install dergleicheSi \ components besaer in the tractor., Üie waste. ■■ ■ i - ■. - ■ - ■■■ - ■ '"■■■ ..". ".- ■ ■■ - ■. .- / ■ ι setsungan hQ \ unÄ 42 Can therefore basically be omitted · Both |'.-"."■ · - "" .-. ■■ .- -. ■ -. "." .-. '■■ ■'. T. · ■ ■

the upper edge of the flat parts 18, as well as the steps tyo and!

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k2 _% form a tight seal with the inner surface of the radiator cowling! 2. The same also applies to the Uefestlgungslaschen 3k and 36 with bevelled rear edge kk tightly abut the Plansch Ib ~, as shown in Fig. 3 * In this way, the guide plate 30 forms with the radiator shroud 12 and the flange lh a Cadastre 46, which is open at its lower end 48 and from which only combustion air can be sucked in.

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It has been found useful that the lower edge of the Guide plate 30 to below the upper water tank 18 goes. Farther it is advantageous if you have a lip on your flat part 38 50 is arranged in relation to the cooler 16 obliquely downward is angled. This enables the coarser dirt particles to be separated out Airflow drawn in from dec * still improved · Substantially

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for the present invention is that the horizontal passage opening 48 of the chamber 46 has such a size that the Speed of the through the opening 48 and the ssu the actual

% Cooling air flow The essentially perpendicular air flow is less than the speed of the air cartridge flowing through the cooler. Due to the greater speed of the cooling air flow, existing dust particles are influenced by their persistence due to the kinetic energy in such a way that the cooling air flow through the cooler st röeen, and not in the: air purifier. The dust particles are separated from the intake air so that the air fed to the engine's air filter is at least freed from the coarser dust particles. Paa air filters can therefore be used without cleaning

, remain in use Practical tests have shown daO "vehicles with the» «inventively trained pre-cleaning · system with regard to the necessary agreement of the air filter, five times as long on average compared to known vehicles can stay at the KinaatE.

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Claims (1)

Claims T. air pre-cleaner for internal combustion engines, a bit serving to produce a "cooling air flow fan, before this arrival ψ parent condenser and above the latter are arranged and old line connected to the air cleaner of the internal combustion engine, which ui its free end is in connection with the outside air, characterized in that a baffle plate (30) is arranged at a distance in front of the end of the line connected to the outside air, .das together with a radiator cover (12) forms a chamber (Ί6) with a lower opening (US) lying essentially parallel to the direction in which the cooling air is directed and which is dimensioned in such a way that the speed of the combustion air flow passing through it is lower than the speed of the through ι ■ the cooler (i6) is flowing KÜhlluftetromes. 2 · Luftvorrsinlger according to claim 1, characterized in that the Guide plate (30) essentially perpendicular to the direction of flow of the KÜhlluftstroBiee is arranged and the su the air purifier (Filter) leading line (28) above the flow opening (48) the Rssaeer (^ 6) flows into this. 3 · Loft pre-cleaner according to claims 1 and 2, characterized in that the line (28) above the upper Vasserkastns (i8) of the Q09848 / 032 2 ORIGINAL BATHROOM ^{/ 2} " -2 - Radiator (i6) is and the baffle (30) is under this water box (i8) to at least 'in the upper area of the radiator core (SO) of the cooler (KS) extends. . J *. Air pre-cleaner according to one or more of Claims 1 to 3 *, characterized in that on the lower edge of the guide plate (30) there is an angled angled downwards towards the cooler (\ 6) Lip (50) provided 1st. . 5. Air pre-cleaner according to one or more of claims 1 to 4, characterized in that the guide plate (30) is attached to the radiator cover (12). 6. Air pre-cleaner according to one or more of claims 1 to 5 * characterized _y that the baffle (30) is attached to an inwardly facing flange (tkj of the radiator cover (12) and on this flange (th) and on the upper inside of the Radiator cowling (12) is airtight. 0 09 848/032 2 OK Blank page