Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1996-09-18
1997-11-25
Solis, Erick R.
Internal-combustion engines
Charge forming device
Fuel injection system
12319012, 123 80BA, 123 80C, F01L 702, F01L 716, F01L 718
Patent
active
056900694
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to an internal combustion engine having rotary distribution valves.
Attempts have already been made to eliminate the drawbacks of the standard valve distribution systems by proposing distribution devices having rotary valves.
For example, the document U.S. Pat. No. 2,730,088 discloses a multi-cylinder internal combustion engine comprising a set of aligned cylinders wherein the combustion chambers each communicate with an intake port and an exhaust port, which intake ports and exhaust ports of this set of cylinders are disposed in alignment, wherein the distribution means which make it possible to open and close said intake and exhaust ports comprise two rotary pipes of circular cross-section, each of which includes a plurality of aligned hollow valves, rigidly connected to one another and communicating with one another, whose lateral wall is provided with a plurality of separate, angularly offset apertures, the number of which corresponds to the number of cylinders to be served, one of which rotary pipes allows the opening and closing of the line of intake ports of the set of cylinders, while the second allows the opening and closing of the line of exhaust ports of this set of cylinders.
Each rotary pipe is constituted by alternating cylindrical portions of different diameters, and the apertures through which the gasses pass are provided in the portions of smaller diameter. Each rotary distribution pipe is housed in a fixed sleeve, and its portions of larger diameter are sized so as to have an appropriately adjusted rotational and sliding clearance within said fixed sleeve, which larger portions are equipped, near their ends, with gaskets which form a seal impermeable to the passage of the gasses.
The device described in the document U.S. Pat. No. 2,730,088 has a substantial drawback which stems from the fact that the gasses circulate exclusively inside the rotary intake and exhaust distribution pipes.
The result, on intake, is that the first cylinder is fed first, then the second, then the third, etc.
These cylinders, therefore, are successively fed in a way that is very uneven, both in terms of volume and in the quality of the gas mixture, so the engine has poor equilibrium.
Likewise, the evacuation of the exhaust gasses only occurs inside the rotary exhaust pipe, for each cylinder in succession, so the exhaust of the gasses also occurs in a very non-uniform way in which the cylinders are more or less distanced from the outlet of said pipe.
Another drawback of the device described in the above-mentioned document resides in the fact that it is necessary to place the carburetor or the exhaust at one end of the rotary tubular distribution pipes, which constitutes a constraint when the engine must fit within a limited volume.
One object of the present invention is to eliminate the above-mentioned drawbacks of multi-cylinder internal combustion engines with rotary distribution systems of the type described above.
According to the invention, this objective is achieved by means of an engine of this type which is particularly remarkable in that the rotary intake pipe and the rotary exhaust pipe are housed in an intake manifold and an exhaust manifold, respectively, each of which manifolds forms a chamber or space which surrounds said intake pipe and said exhaust pipe, respectively, over a large part of their periphery, which chambers are impermeably separated and arranged to allow the gasses to circulate outside and along these rotary pipes.
Due to the above characteristic dispositions, the gasses circulate both through the inside and along the outside of the rotary distribution pipes in the space provided between these pipes and the inner surface of said manifolds, in which the gas stream (fuel and/or oxidant) whirls in such a way that on delivery, all the cylinders are fed under substantially the same conditions, in terms of volume as well as in the quality of the gas mixture, so that better combustion and a better equilibrium of the engine is obtained.
The evacuation of the gasse
REFERENCES:
patent: 2730088 (1956-01-01), Hyde
patent: 3203409 (1965-08-01), Allen
patent: 3948227 (1976-04-01), Guenther
patent: 3993036 (1976-11-01), Tischler
patent: 4421077 (1983-12-01), Ruggeri
patent: 5361739 (1994-11-01), Coates
patent: 5448971 (1995-09-01), Blondell et al.
patent: 5572967 (1996-11-01), Donaldson, Jr.
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