Power plants – Combustion products used as motive fluid – Combustion products generator
Patent
1998-01-22
2000-10-10
Kim, Ted
Power plants
Combustion products used as motive fluid
Combustion products generator
60 39142, 60 3938, F02C 500
Patent
active
061288977
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND INFORMATION
1. Field of the Invention
The invention relates to a rotary internal combustion engines.
2. Description of the Related Art
One such rotary engine is known from German Published, Non-Examined Patent Disclosure DE-OS 2 357 985. In it, two diametrical explosion or combustion chambers are present, which open radially to the rotor. The rotor is embodied over its entire circumference with individual rotor chambers, whose walls subject to combustion pressure extend obliquely to the radial direction. Such an engine has the disadvantage among others that radial explosion surges occur, which lead to engine vibration and energy losses. Another problem is sealing off the rotor chambers from the surrounding stator, because the immediately adjacent rotor chambers are sealed off only in linear fashion. This impairs the efficiency. The known engine must be started with a typically electrical starter.
Engines of similar construction have combustion chambers that are valve-controlled in a complicated fashion on the outlet side.
OBJECT AND SUMMARY OF THE INVENTION
The object of the present invention is to embody an internal rotary combustion engine in such a way that with high efficiency it operates very smoothly and starts automatically without a typical electrical starter.
To attain this object, a rotary internal combustion engine of the type defined by the preamble to claim 1 is distinguished according to the invention by the characteristics recited in the body of that claim.
Because of the angular arrangement of each chamber outlet relative to the wall subject to combustion pressure moving past it, and because of its predominant radial orientation, optimal energy yields and vibration-free engine operation are obtained. The pressure-tight machined seat in the region between the rotor chambers adjacent one another but spaced apart relatively widely favors the pressure buildup in the combustion chambers and promotes efficiency. With the external or cooling air aspirated by the aspirating rotor, effective engine cooling is attainable. With the compressor rotor, a supply of compressed air is built up during engine operation in the pressure reservoir, and this supply is utilized for automatic engine starting. Hence a separate electrical starter is unnecessary. In engine operation, the pressure built up in the pressure reservoir is also utilized to supply the combustion chambers with compressed air and fuel that is that the same pressure.
The features recited in claims 2 and 3 allow a gentle connection of the engine as needed to an element that is to be driven. Especially favorable energy conditions are made possible by the refinement of claim 4.
With the provisions of claims 5 and 6, the ignition energy for the spark plugs can be generated in a very simple and rational way in the combustion chambers.
If in accordance with claim 7 during one complete explosion surge walls subject to combustion pressure constantly move past the chamber outlet, major efficiency in conjunction with smooth engine operation is attainable. The embodiment of claim 8 has proven especially advantageous in this respect.
A favorable structural design is obtained by the characteristics of claims 9-13. The exhaust gases can flow into the exhaust gas outlet or removal duct. Choking of the rotor chambers on the outlet side improves the energy conversion. The rotor drive blades that dip into the exhaust gas outlet or removal duct lead to a further improvement in efficiency.
The delivery of fuel and air at the proper time can be accomplished highly expediently with the characteristics of claims 14 and 15.
With the characteristics of claims 16 and 17, the freedom from vibration and the energy yield can be improved.
The features of claims 18-21 enable simple control of the individual operational sequences. The valve slide controls the corresponding connections for the compressed air and for the compressed air compressed by the compressor rotor and supplied to the pressure reservoir. The starting valve upon automatic engine starting cont
REFERENCES:
patent: 976236 (1910-11-01), Weiss
patent: 1025117 (1912-05-01), Boyer
patent: 1174439 (1916-03-01), Pelley
patent: 2547560 (1951-04-01), Brodzinsky
patent: 2608058 (1952-08-01), Geeraert
patent: 2920447 (1960-01-01), Hollings
patent: 3451215 (1969-06-01), Barr
patent: 3712274 (1973-01-01), Craft
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