US1199189A - Carbureter. - Google Patents

Description

0. KERSTEN.

CARBURETER.

APPLlcATloN FILED DEC. a. 1913.

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OSCAR KERSTEN, 0F BERLIN, GERMANY.

CARBURETER.

Specification of Letters Patent.

Iatented Sept, 26, i916.

Application led December 3, 1913. Serial No. 804,478.

To all v'whom 'it may concern Be it known that I, OSCAR KnRsrEN, a subject of the German Emperor, residing at Turmstrasse 48, Berlin, N. WV., in the German Empire, have invented certain new and useful Improvements in Carbureters, of which the following is a specification.

This invention relates to spray carbureters of the type in which additional air is introduced into the mixture before passing out through the throttle, the admission of said additional air being regulated by the rotation of one cylindrical member in relation to the other so that similar ports in each register more or less according to the requirements of the engine;` and has for its object to provide improved means whereby such additional air can be conveyed to the mixture, before it reaches the throttle, in the form of vortices and therefore in a inely divided state.

My invention consists in constructing a carbureter as hereinafter described and as particularly pointed out in the appended claims.

I ,will now describe my invention vwith reference to the accompanying drawing which illustrates an embodiment of my invention.

In the upper portion a of the carbureter, the throttle valve d is mounted on the the screw g. It is controlled by the lever e.

The upper portion which is formed as a preliminary heater, is secured on the lower portion o by means of four screws Q. The lower portion is formed as a fuel reservoir in which the float 7L is provided. VFuel is supplied to the reservoir through' the conduit p, fn, s. The supply is controlled bythe needle which is raised or lowered by the lever t pivoting about the point e. From the fuel reservoir a conduit leads to the fuel nozzle i the cross-section of the outlet of which is adjustable as desired by. the screw Ic. The fuel leaves the reservoir, enters the nozzle and is carried away by the drawn-in air. Between the upper portion a and the lower portion b the middle portion c is provided, which carries the controller y of the additional air supply. The latter consists of a plurality (for instancel 3) of concentric rings formed with apertures, and which are relatively staggered. The air therefore does not reach directly the fuel-air mixture but strikes the various rings and becomes finely divided. The additional air is supplied under all conditions in such quantities that the fuel-air mixture is always approximately of the same composition. The rings may be mounted at different distances apart (for instance, l, 2, or 3 mm). The resistance offered by the rings, produces a uniform admission of air and a more intimate mixture with the mixture coming from the sprayer.

The main advantage of the present arrangement resides in the fact that movable parts such asfballs, valves or the like are f avoided, which could easily give rise to ununiform operation of the engine.

Upon the outermost ring of the additional air controller a rotary valve y2 is mounted; being formed with the same number of apertures as the ring inclosed by it. By displacing the valve, the apertures formed at the outer edge of the additional air controlled, Y

are partly coveredand the current of air is thus controlled. The displacement of the ring can be e'ected from the exterior by means of the arm y.

What I claim and desire to secure by Let ters Patent of the United States is zl. In a carbureter comprising an upper portion containing the throttle valve, an intermediate portion for supplying secondary air to the mixture before it passes to the throttle and a lower portion containing a fuel reservoir and centrally thereof a primary air inlet and a fuel nozzle, means for supplying a quantity of nely divided secondary air comprising a plurality of` concentric rings, said rings kbeing spaced apart, and each ring being formed with openings, which are relatively staggered.

2. In a carbureter comprising an upper portion containing the throttle valve, an intermediate portion for supplying secondary air to the mixture before it passes to the throttle and a lower portion containing a OSCAR VKERSTEN.

fuel reservoir and centrally thereof a primary air inlet and a fuel nozzle, means for supplying a quantity of finely divided seeondary air comprising a plurality of stationary concentric ringshaving openings which are relatively staggered, said rings being arranged at diiferent distances apart, a perforated cylindrical Valve surrounding Vitnesses HENRY HASPER, VOLDEMAR HAUPT.

Unpies of this patent'may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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