Rotary expansible chamber devices – Working member has planetary or planetating movement – Plural working members or chambers
Patent
1996-07-16
1998-09-22
Koczo, Michael
Rotary expansible chamber devices
Working member has planetary or planetating movement
Plural working members or chambers
418 94, 418140, F02B 5300, F04C 210
Patent
active
058105743
DESCRIPTION:
BRIEF SUMMARY
The invention relates to rotary machines, including rotary-piston engines, compressor and pumps and in particular, to internal combustion engines of rotary-piston type, which burn both liquid and gaseous fuel. Power plants are known in prior art to have rotary pistons (USSR Patent No. 639473 of Dec. 25, 1975, Inventors Danquart Eiermann and Felix Wankel, Applicant "Wankel GMBH", F.R.G., for an invention "Power Plant"). This power plant, according to USSR Patent No. 639473, has in one section a pair of working chambers of epitrochoidal profile with gas distribution ports and spark plugs, said chambers being offset from one another through an angle of 180.degree., and a compressor chamber arranged between them and provided with by-pass channels, which has its smaller axis arranged at an angle relative to smaller axes of the working 15 chambers. The power plant has also a common eccentric output shaft on which the eccentrics of the working chambers are turned 180.degree. relative to the eccentrics of the compressor chamber, and rotors-pistons mounted on the eccentrics, wherein the working chambers are made to have an increased number of epitrochoid branches, and their rotors-pistons--to have respectively an increased number of faces, thus cooperating to define compression, expansion and exhaust cavities, said expansion cavities being connected with the compressor chamber within the zone of its smaller axis by additional by-pass channels of small cross-section. This arrangement coincides with the claimed one in some design features, the power plant comprises a stator with an internal volume, with the working chambers, an eccentric shaft, a rotor-piston with a tooth gear, said rotor-piston being mounted on an eccentric and conjugate to the stator by means of toothed gearing.
The arrangement according to USSR Patent 639473, like also other power plants of Wankel type, has disadvantages listed below.
Exhaust gases contain more toxic components than exhaust gases of piston engines. It is carbon monoxide that is given off in particularly large quantities. The compression ratio in the above-mentioned power plant is limited. Fuel mixture partially enters the exhaust manifold, thus reducing the engine's fuel economy. In the power plants of Wankel type, the sealings are mounted on the rotor so that they are, therefore, working under heavy-duty conditions (power plants of Wankel type, see also in the book: "Internal Conbustion Engines", Moscos, "Mashinostroeniye" Publishers, 1983, pages 289-293).
The closest prior art to this invention (its prototype) is represented by the inventions described in Polish Patents "An Engine or a Work Machine With a Rotary Piston" No. 48198 (priority of Nov. 8, 1962, publ. May 4, 1964, similar F.R.G. Patent No. 1451890, Inventors N. Radziwil and A. Broel-Plater) and "A Method for Sealing a Machine or an Engine With a Rotary Piston, and Also a Sealing Kit for Implementation of This Method" according to additional patent No. 48191, Kl. 46 a.sup.o 9, MKP OF2b of Nov. 8, 1962 by the same inventors (similar F.R.G. Patent No. 1451689. The arrangement according to the above-mentioned Polish patents can be used in pumps, engines, compressors, and in all these cases different are only inlet and outlet units for working medium and also units for initiating the working process.
The arrangement according to Polish Patent No. 48198 consists of a cylinder (stator) shaped as a regular polygon, as well as a rotary piston placed inside it, which has the cross-section thereof represented by the envelopes of cylinder wall elements interacting therewith, said envelopes being defined by mathematical equations in the plane of motion. At the same time, the piston is connected with the main shaft by means of an eccentric portion of the shaft, and also with the housing, by means of a planetary gear meshed internally. The working chambers arranged in the cylinder corners in the form of recesses are shaped as pent-roof chambers, thus allowing to obtain an efficient fuel combustion process as well as an advantageous
REFERENCES:
patent: 2162771 (1939-06-01), Winans
patent: 3117561 (1964-01-01), Bonavera
patent: 3199496 (1965-08-01), Kell
patent: 3285189 (1966-11-01), Doyer
patent: 3314401 (1967-04-01), Kell
patent: 3441007 (1969-04-01), Kwaak
patent: 3450107 (1969-06-01), Radziwill et al.
patent: 3967594 (1976-07-01), Campbell
patent: 4111617 (1978-09-01), Gale et al.
patent: 4218200 (1980-08-01), Morita et al.
patent: 4728270 (1988-03-01), Hoffmann
patent: 5011385 (1991-04-01), Eiermann
patent: 5100309 (1992-03-01), Eiermann et al.
Makeev Vitaly Egorovich
Marx Konstantin Ivanovich
LandOfFree
Power plant does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Power plant, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power plant will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1617421