US2525374A - Carburetor arrangement for v-type air cooled engines - Google Patents

Description

Oct. 10, 1950, J. RUZKEKA 2,525,374

CARBURETOR ARRANGEMENT FOR V-TYPE AIR COOLED ENGINES Filed Aug. 29, 1947 Patented Get. 10, 1950 CARBURETOR ARRANGEMENT FOR V-TYPE AIR COOLED ENGINES Jaroslav Riiiika, Prague-Smichov, Czechoslo- Tatra, narodni podnik,

vakia, assignor t Koprivnice Application August 29, 1947, Serial No. 771,362 In Czechoslovakia January 2, 1939 Section 1, Public Law 690, August 8, 1946 Patent expires January 2, 1959 2 Claims.

In air-cooled engines with the cylinders arranged in V the carburetter is usually arranged in the space provided between the cylinders, since the sucked-in air may be distributed into the cylinders in the best and shortest way possible. A drawback of this arrangement consists in that the carburetter is situated just in the path of the hot air led away from the cylinders. An arrangement, it is true, has already been proposed in the form of a hollow slide valve whereby the air is directed into the carburetter either from the cool external space or from the warm space between the cylinders or from both spaces simultaneously in a mixture of any desirable mixing ratio, but in spite of this arrangement even in this case the drawbacks occur in consequence of the carburetter being excessively heated by the hot air itself. Engines of this type are surrounded by a plate or similar jacket serving for directing the coolin air and distributing the whole space round the engine into a cold and a warm space. In the above mentioned arrangement serving for the admission of hot air to the carburetter in any desired manner the carburetter is connected to the cold space by a pipe, but in such manner, that the connection with this space can be progressively closed and at the same time the connection with the warm space can be opened, it being possible to arrange an air filter in the inlet pipe.

The arrangement according to this invention for eliminating the drawback of the necessity of arrangin the carburetter in a hot space, consists in that the middle portion of the inlet hollow body is enlarged to form a housing in such manner that the whole carburetter is arranged directly in said enlarged portion in consequence of which the entire carburetter is exposed to a medium of such temperature which is most favourable for the carburetter operation.

The accompanying drawing shows diagrammatically by way of examplean embodiment of the object of the present invention.

The hot space is between the cylinders 2 and 3 and is limited by a jacket 4. Through this space I a hollow cylindrical body 5 extends and opens on both frontal extremities into the cool space 5 a widened portion '5 being centrally arranged in the shape of a housing wherein the carburetter 8 is supported. The ends of the body 5 are provided in a well known manner with apertures which co-operate with the apertures in the jacket and the inner space of the body is filled out with slides having openings and serving for closing respectively opening the admissions of cold or hot air respectively for preparing a suitable warm mixture filters 9 being preferably provided in a portion of the hollow body 5. The body I having the shape of a housing is provided with a cover It renderin possible the access to the carburetter.

I claim:

1. In an internal combustion engine having the cylinders arranged in V-forrnation, a jacket enclosing the cylinders and the hollow space between the same, a hollow cylindrical body extending transversely through the jacket and communicating with both its ends with the cooler space outside said jacket, a casing within said jacket and arranged centrally within the hollow space between said cylinders and communicating with the central portion of said hollow cylindrical body, and a carburetter arranged in said casing and adapted to be supplied with air from said cooler space through said hollow cylindrical body.

2. In an internal combustion engine having the cylinders arranged in V-formation, a jacket enclosing the cylinders and the hollow space between the same, a hollow cylindrical body extending transversely through the jacket and communicating with both its ends with the cooler space outside said jacket, a casing within said jacket and arranged centrally within the hollow space between said cylinders and communicating with the central portion of said hollow cylindrical body, a carburetter arranged in said casing and adapted to be supplied with air from said cooler space through said hollow cylindrical body, and rotatable slide valves in the ends of said hollow cylindrical body for controlling the amount of air supplied to said carburetter.

JARosLAv RiiZrcKA.

REFERENCES CITED The following references are of record in the file of this patent:

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