The rotary piston engine was invented by Mr. Felix Wankel, a German inventor around 1954. It was also called Wankel rotary engine. The inventor and the Audi/NSU Company registered the rotary piston engine patent in several countries, the patent right had expired in 1981 more than 24 years ago.
The first car with the rotary engine was sold by Mazda in 1967. Many leading car manufacturers bought the patent right from Audi/NSU for further research and development for their production. By 1975-1976 all of them except Mazda has shut down the project, and Audi/NSU had terminated the production of the rotary piston engine in the Ro80 cars. This actions indicated that the original rotary piston engine had a ‘big problem’.
The rotary piston engine, when compared to the conventional reciprocating engine, has several disadvantages. The drawbacks are: low output torque, high fuel consumption, and high exhaust gas temperature.
The main factor of the situation is the inefficiency of power transmitted from the rotor to the eccentric (output) shaft.
This invention is set out to improve the efficiency of power transmission by designing and replacing the traditional eccentric (output) shaft with a new set of gears called “the Cometary Gears Set” and the method for attaching the Cometary Gears Set output shaft to Wankel engine and other rotary piston engines.
What is the Cometary Gears Set (CGS)? The CGS consists of gears that rotate like comets traveling from outer space around the sun and then returned to their places in the universe.
The CGS consists of three parts of gear, one internal gear (No. 4), one ring gear (No. 5), and one external gear (No. 6). The ring gear has two rows of gear, the outer ring and the inner ring. The outer ring gear (No. 5) engaged to the internal gear (No. 4). The inner ring gear (No. 5) engaged to the external gear (No. 6). The ratio of External gear:Ring gear:Internal gear are 2:3:4 respectively, and the common factor of this system is 15, 17 or 19 and the eccentric distance is 1.2 to 1.5 centimeters
With the rotary piston engine transmitted by means of the CGS output shaft, there are two systems of output.
System I. Fixed internal gear (big gear, No. 4). The internal gear (No. 4) drives the ring gear (No. 5) and the sun gear (or external, No. 6) is driven. The ratio of the output shaft is 3 times of the rotor revolution, as shown in drawing
System II. Fixed external gear (sun gear, No. 6). The external gear (No. 6) drives the ring gear (No. 5) and the big gear (or internal, No. 4) is driven. The ratio of output shaft is 1.5 time of the rotor revolution, as shown in drawing
Single rotor engine in System I. Fixed internal gear (No. 4). The main components are shown in drawing
Two Rotors Engine in System I. Fixed internal gear (No. 4). The main components are shown in drawing
Single Rotor Engine in System II. The main components are shown in drawing
Two Rotors Engine in System II. The main components are shown in drawing
By calculation, the rotary piston engine when equipped with the Cometary Gears Set output shaft, produces more than double the output torque or more than 100% higher than the original rotary engine at the same speed (in System I); and more than 200% higher (or 4 times) at 1.5 times the piston speed (in System II).
Because of the higher torque output, the new Cometary Gears Output Rotary Engine can also be transmitted with the conventional manual gear transmission.
The Inventor invented a model of the Cometary Gears Set, and how it can be operated. The Cometary Gears Set rotates in motion similar to the eccentric shaft except direction.
The Cometary Gears Set is a series of three gears driving each other to provide smoother power while being lighter in weight. The Cometary Gears Output Rotary Engine has two systems of output shaft and can be operated in 2-stroke or 4-stroke engine in Otto or Diesel cycle.
In System I, the ratio of the output shaft is triple of the rotor revolution. In System II, in the mean time, the ratio of output shaft is one and one-half times that of the rotor revolution.
The Inventor also invented an apparatus to test the efficiency of transmission by means of the eccentric shaft and the Cometary Gears Set output shaft.
The advantages of the rotary piston engine itself (i.e., no reciprocating motion, no heavy flywheel and no valve character) combined with the high performance transmitted by the CGS, the CGORE are significant. With the enhanced power weight ratio of the CGORE, a higher speed can be reached with less vibration, reduced fuel consumption, and lower noise level. Lead-free gasoline and liquefied natural gas can be utilized. As the result, of the Otto cycle or the Diesel cycle, the engines have high thermal efficiency. After more than 40 years of minimal success of the original rotary piston engine with eccentric shaft, the new CGORE will achieve maximum success.
The main components of the Cometary Gears Output Rotary Engine. 1. Rotor, 2. Side housing (front & rear), 3. Rotor, 4. Internal gear (big gear), 5. Ring gear (two rows of gears), 6. External gear (sun gear), 7. Intermediate housing (gear housing), 8. Eccentric spacer, 9. Main output shaft, 10. Main bearing, 11. Rotor bearing, hollow shaft bearing, 12. Starting wheel, 13. Flywheel, 14. Inlet port, 15. Exhaust port, 16. Spark plug, 17. Apex seal, 18. Spacer wheel, 19. Side spacer, 20. No. 4, 5 and 6 form the Cometary Gears Set.
Number | Date | Country | Kind |
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090223 | Apr 2004 | TH | national |