DE8620190U1 - Intake device for internal combustion engines - Google Patents

Description

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Ha-T / 8603 6

Waiter Wengler
Ohmstrasse 10
860 0 Bamberg

Intake device for internal combustion engines

DESCRIPTION

The invention / innovation relates to an intake device for internal combustion engines, namely carburetor engines , which have a radiator and a cooling propeller arranged essentially behind the radiator in the direction of travel Direction of travel is forward.

It is now common practice for the combustion air that is fed to the carburetor not to come from the center of the engine compartment suction, but to provide a suction hose on the air filter housing, which is usually in the middle of the engine compartment arranged air filter (at least with front engines) runs essentially forward and somewhere ends in the front part of the engine compartment. Usually the end is attached in such a way that splashing water can be sucked in and the like is largely avoided.

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It has been found in the past that Such arrangements on intake systems sometimes lead to problems which result in a reduction in performance express the engine, as the engine especially from lower speeds out additional power in the Air intake process must be stuck - depending on the intake cross-section - can be bigger or smaller.

It is also already known to suck in air from part of the engine compartment, in particular in winter operation which has increased heat convection. Usually the area above the exhaust manifold of the internal combustion engine is used for this chosen, because the very hot exhaust gases cause air of increased temperature to accumulate there, which if it is used as intake air - the running properties of an engine in cold weather.

Furthermore, it is already known to air over compressors, turbochargers or the like. With increased pressure through the To push the carburetor system into the combustion chambers, + in order to increase the boost pressure and, in particular, the mixture density to increase. This is relatively complex and expensive and is usually only found on upscale motor vehicles Performance class or use on sports vehicles. Turbochargers are used in particular to increase performance used, which is usually associated with an increase in fuel consumption.

The invention / innovation is based on the object of a Device with the features of the generic term dtss Claim 1 in such a way that the cold running properties an engine is improved and a reduction in fuel consumption is achieved at the same time. These

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The object is achieved by the characterizing features of claim 1, advantageous developments of the Innovations result from the subclaims.

The innovation is achieved in an advantageous manner that air is relatively high flow through the cooler is warmed evenly into the air intake hose is pressed in, but an excessively high back pressure on the carburetor suction side is avoided. In contrast to compressors according to the state of the art, the air has a certain possibility of evasion when the pressure in the carburettor is saturated, so that overpressure phenomena on the carburetor intake side can be avoided.

The arrangement of the suction hose radially outside of the has a particularly advantageous effect on the suction behavior Propeller off, especially if an air flow control cap is arranged that radially extends the propeller at least partially covered on the outside. Advantageous developments relating to the air flow control cap and their arrangement emerge from the subclaims 4-7.

Due to the features according to claim 9-12 there is the possibility of the slight overpressure caused by the Fan effect of the cooling propeller can be achieved, specifically adapted to the current running condition of the engine * 5 This enables the consumption values to be reduced further.

All in all, the most recent missions have shown that a boost in confidence with the same performance by approx. S% - IS% by the εΐ £ innovation / innovation

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Device can be achieved. Especially with the The propeller acts on the arrangement of the air inlet opening of the suction hose radially outside the propeller as a radial fan, a radial exhaust air component is pressed into the suction hose, axially extending Exhaust air components can flow out of the propeller area undisturbed, which improves the cooling behavior of the Cooling system is not disturbed.

The invention / innovation is based on an exemplary embodiment explained in more detail in the drawing figures. These show:

2 shows a detailed view of the catch cap arrangement in the area of the cooling propeller;

3 shows a perspective illustration of a catch cap rotatably arranged about its longitudinal axis.

The intake device, designated 10 as a whole in FIG. 1, is used in conjunction with a carburetor engine 12 used, to which a radiator 14 and a substantially seen in the direction of travel 16 arranged behind the radiator 14 * - ter cooling propeller 18 are assigned. Furthermore, the carburetor engine 12 has a carburetor system, the flow-wise a filter housing 20 is vöjigeädnahm, whose Air filter housing opening 22 with a suction tube 24 of which at least

Fig. 1 is a schematic representation of the invention / innovation essential assembly parts in a car engine compartment with a front engine;

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a short section runs in the direction of travel 16, d. H. from the carburetor in the direction of travel 16 to the front Cooler is running.

All of the above-mentioned parts are within one schema arranged engine compartment 26, which at its front end 28 with at least one recess 30 is provided, which allows the air flow (arrows 32) access to the cooler 14, this penetrates and strokes along the carburetor engine 12.

Furthermore, a propeller housing 36 is arranged on the rear side 34, which the cooling propeller 18 radially on the outside borders.

40 with an air flow catching cap is designated, which is attached to the air inlet opening 42 of the suction tube 24 on the one hand and by means of rivet or screw connections 44 on the propeller housing 36 on the other hand. the The air inlet opening 42 of the suction hose 24 is in the exhaust air area or pressure area of the cooling propeller 18, namely essentially radially outside the propeller, so that a secondary flow running radially from the propeller (Arrow 46) the propeller exhaust air is pressed into the air inlet opening 42. To this effect Still to be improved, a cap section 48 extends beyond the propeller rear side 50.

To ensure a firm and fluidically perfect connection between the air flow control cap 40 and the propeller housing 36 is to achieve the air flow control cap, which is essentially designed as a tubular body cut open at an angle with a first inclined cut

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surface 52 is provided, which is rounded according to the rounding of the propeller housing, which is particularly clear from FIG. The second cut surface 54 delimits the catch cap section 48 which engages behind the propeller rear side 50.

In the embodiment shown in Fig. 3, the air flow control cap 40 is rotatably arranged around the pipe body longitudinal axis 56 in the exhaust air area of the cooling propeller 18 and controllable via a drive device 58, for which a control device, not shown in detail, is provided which adjusts the rotary position of the air flow control cap depending on the running condition of the engine and thereby optimizes the overpressure on the outside of the carburetor. In order to ensure that the safety cap shown in FIG. 3 can rotate freely, a rotary connection 60 is provided, which is arranged between the suction hose 24 and the hose-side end of the safety cap.

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REFERENCE LIST

10 Suction device 12th Carburetor engine 14th cooler 16 Direction of travel 18th Cooling propeller 20th Air filter housing 22nd 24 Suction hose 26th Engine compartment 28 Front end 30th Recesses 32 Airflow 34 back 36 Propeller housing 38 40 Ventilation vent hood 42 Air inlet only 44 links 46 arrow 48 Cap section 50 Propeller back 52 Cut surface 54 second cut surface 56 Longitudinal axis 58 Drive device 60 Slewing ring

Claims (1)

Ha-T / 86036 EXPECTATIONS Intake device (10) for internal combustion engines, namely carburetor engines (12), which have a cooler (14) and a cooling propeller arranged essentially behind the radiator (14) in the direction of travel (16) (18), and an air extraction hose (24) is provided on their carburetor system is the one with an air filter housing opening (22) is in connection and at least one substantially in the direction of travel (16) has running section, characterized, that the air inlet opening (42) of the suction hose (24) is arranged in the exhaust air area (pressure area) of the cooling propeller (18). 2. suction device according to claim 1, characterized, that the air inlet opening (42) of the suction hose (24) is arranged radially outside of the cooling propeller (14). · »Ft * 1 · 111 !! ■ I t I 3. suction device according to claim 1 or 2, characterized, that in the area of the air inlet opening (42) of the suction hose (24) an air flow control cap (40) is arranged, ie the cooling propeller (18) at least partially radially on the outside includes. 4. suction device according to claim 3, characterized, that a cap section (48) protrudes beyond the propeller rear side (50). 5. suction device according to claims 3 or 4, characterized, that the air flow capture cap (40) on a cooling propeller (18) encompassing the cooling propeller (18) radially on the outside Propeller housing (36) is attached. Suction device according to one of the preceding claims, characterized, that the air flow control cap (40) is integral with idem: »; Propeller housing (3 &) designed iftt. i <II I II < 4 I ti · ι I I 4 * (a 4 ■ I <4 C I < . . ■. I. I <■ ί i ti · · If i I t t tit ι <«< 9 - 7. Ansäügvöirifichtung according to one of the preceding Expectations, characterized, that the air flow capture cap (40) as essentially one-end obliquely cut tubular body is formed, wherein a first rounded inclined cut surface (52) for contact or connection with the propeller housing (36) and a second cut surface (54) that engages behind the rear side of the propeller (5 <ϊ) Catch cap section (48) limited 8. suction device according to one of the preceding claims, characterized, that the inner diameter of the tubular trap cap (40) is greater than or equal to the inner diameter of the suction hose (24). 9. suction device according to claim 7, characterized, that the air flow catching cap (40) around the longitudinal axis of the tubular body (56) is rotatably arranged in the exhaust air area of the cooling propeller (18). it if It ItM ti * I • 4 · i el I * · · ail ι ι li <· « t t t I ' > III ·· a ■ 'I f I ί i i I I «II ι ' ti · ■ - 10 - Ioi suction device according to claim A, characterized in that the rear of the propeller (50) overlapping the cap section (48) is a pivoting part, which is articulated or pivotably connected to the tubular body. 11. Suction device according to one of claims 9 or 10, characterized, that the rotary or pivoting movement of the tubular body or the pivoting part can be controlled. * Suction device according to claim 11 > characterized, that the control via running condition sensors on the engine as well as an adjustable balancing circuit takes place automatically.