DE7312135U - FLOAT TANK FOR COMBUSTION ENGINES - Google Patents

Description

Dr. P. Zumstein Sr. - Dr. E. Assmann Dr.R.Koenlgebcrgor - Dlpl.Phya. R. Holzbauer

Dr. P. Zumsteln jun. Patent attorney

8 Mönchen 2, Bräuhauiitraße 4 / III

3254-73

SOOIETE INDUSTRIELLE UB BREVETS ET D ¹ ETUDES SIBE Float tanks for internal combustion engines.

The invention relates to the float tanks

for internal combustion engines with a float, whichever way a valve operated for the pulp inflow. It also affects those with such float tanks equipped carburetor.

As is well known, when the temperature in

the float tank is high, the fuel for cooking. the volumetric mass of the emulsion formed by the mixture of liquid and vapor bubbles is smaller than that of the liquid Fuel. This has the consequence that the float has a weaker closing effect on the fuel supply valve exerts, so that the fuel in the float tank a reaches too high a level and the air-fuel mixture delivered to the engine by the carburetor becomes too rich and even the Can cause a standstill of the Kotor.

To remedy this disadvantage, the

3254-73

inventive swim holder characterized in that its float has an inner cavity, which is too wide open to the lower part of the Schwisiaerbehälters and with the upper part of the Schwicaierbehälters through an opening very small cross-section is connected

The invention is explained below by way of example with reference to the drawing, the only one of which Figure a schematic vertical section of a fiction cash Downdraft carburetor ^ with its float tank shows.

The carburetor has on the whole an inlet line 1, which with a throttle element 2, ζ.3. one on one Axis 3 attached rotary valve, and an air funnel 4 located in front of the throttle element is provided. To the inlet pipe 1 a float tank 5 is attached, which has a body 6, a pipe 7 for supplying the from a (not shown) reservoir incoming fuels and an inlet opening 8, at which this tube ends.

The free cross section of the opening 8 is

regulated by a seed valve 9 which is controlled by a float 10. This float is fixed with a holder connected, which is attached to an axis carried by the body 6. The float tank 5 contains a ventilation duct 13 and feeds a main circuit and a Langsacilaufkreis (which are not shown) with fuel. Of the Main circle opens into the line 1 at the point of the air funnel 4 through a spray tube 14 · The center valve 9 can with a transverse surface 11a of the holder 11 can be held in contact by a bracket 15.

According to the invention, the float 10,

which can be made of foam rubber not attacked by the fuel, an approximately semicircular cavity 16, which after the lower rope of the Lchwimmerbehalter is too open. An opening 17 sets the upper part of the otherwise closed at the top Cavity 15 with the upper part of the float tank 5 in connection

The above device operates as follows. When the temperature of the float tank 5 is high,

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Vapor bubbles form, n '; dJn Sde * Kas ^ e, 4 of the liquid fuel. This steam settles in the Kohlrauö ** 16, and a fuel level N ₁ is established in this, which depends on the ratio between the amount of steam that has penetrated from below into the cavity 16 and the amount that escapes upwards through the opening 17 As a result, the actual submerged volume of the float 10, which helps to give it a vertical buoyancy, is formed by the submerged volume of the full section of the float 10 plus the volume of the cavity 16 limited below by the level% In the cavity, the float 10 would be heavier, and the closing effect of the Kb'rnerventils 9 would be weaker

If the temperature of the float tank 5 is sufficiently low, little or no steam is generated, which is in any case discharged through the opening 17. The liquid fuel then fills the cavity 16, and the submerged Volume of the float 10 is reduced. This reduction in the submerged volume when the float tank is cold is compensated by the fact that the volumetric mass of the liquid fuel, which is then practically vapor-free, is greater than that of the Is an emulsion of liquid and vapor when the float tank is hot. In both cases, the liquid fuel is in the The float tank is kept practically at a constant level N.

So you get a swimmer, which one

Closing force for the Kornerventil results, which does not noticeably decrease when the fuel is boiled in the float tank, provided that the opening. 17 the parameters of the fuel used and the heating law of the float tank has adapted dimensions, which does not present any difficulties for a person skilled in the art. J

Claims (1)

"4" 3254-73 1.) Sohwimmerbehalter for internal combustion engines with a float, which controls a fuel supply valve, characterized in that the float (10) has an inner cavity (16), which is wide in the direction of the lower part of the Öo _ßW i _ame rbehälters (5) is open and communicates with the upper part of the float tank through an opening (17) with a very small cross-section * .ee rf> * lw ATn. ! BrfiViVti iTL ^ iifBTwniWahjfciV ^ it ΐ1 «ϊ} ιΛΐΛΐι m ^ <i aaa o 7312135 21.D4.77