US1800458A - Carburetor - Google Patents

Description

J. MAHE.

GARBURETOR April 14, 1931.

Filed March 15, 1928 \HVEHTOR BY 6- z gffiw 4 TTORHRY Patented Apr. 14, 1931 mans JULIEN Mann, or rears, FRANCE CAB-BURETOR Application filed March l', 1928, Serial No. 262,000, and. in France March 16, 1927.

The object of my invention is to provide an improvement in explosion engine carburetors.

Said improvement contemplates to facilitate motor starting and to save fuel during normal operation and consists in fitting the carburetor, Whatever the type thereof, with one or several tubulures opening into free air above the level of the petrol (gasoline)- contained in the float chamber and communicating wtith the spray nozzle or nozzles and,

consequently, with the said chamber. In ordinary conditions, therefore, petrol (gasoline) will rise in those tubulures up to a height corresponding to its level in the cham- 5 her, thereby forming an additional petrol (gasoline) charge which, on starting, .is, through the sucking action of the engine, immediately carburized and forms a very rich and highly homogeneous mixture, well calculated to facilitate the starting of the engine. sucked empty of their petrol (gasoline) charge, they serve as supplementary air intakes, thus doing duty as automatic fuelsavers.

The single figure in the drawing appended hereto illustrates, as an example, an embodiment of the device, the main characteristics of which have just been hereinabove set forth.

A denotes the float chamber communicating through conduit B with the slow-run, C and normal run I) spray-nozzles. Below said nozzles are secured, at E and F, tubulures G and G open to atmosphere at H, H at a level above the top of chamber A.

As explained above the gasoline will rise in tubulures G and G to the level corresponding to its height in the float chamber A. When the engine is started thefuel will be 4.0 supplied thereto not only from the float chamber but also from the additional reserve in tubes G and G, so that due to the rich mixture prompt starting of the en ine will occur. When the content of tubes and G is used up, these tubes will act from that time on, and while the engine is running, as supplemental air inlets, thus'rendering the mixture leaner and causing a saving in the fuel consumption.

V7 hen the tubulure or tubulures are lures may be varied according to the type of carburetor and the fitting up means will iave to be suited to each case.

Having now particularly ascertained and described the nature of my said invention as Well as the mannerin which the same is to be performed, I declare that What I claim is p 1. The combination with a carburetor having a float chamber an idling speed nozzle and a normal speed nozzle for supplying fuel to an internal combustion engine, of supplemental conduit means between the float chamher and each of said nozzles, said conduit means having a permanent connectionwith the fuel a point considerably below the level of the fuel in the float chamber and also a permanent connection with the atmosphere at a single point considerably above the level of the fuel in the float chamber.

'2. The combination with a carburetor having a float chamber and an idling speed nozzle and a normal speed nozzle for supplying fuel to an internal combustion engine, of additional conduit means betweenthe float J ULIEN

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