Internal-combustion engines – Rotary – With compression – combustion – and expansion in a single...
Patent
1996-04-03
1998-02-24
Koczo, Michael
Internal-combustion engines
Rotary
With compression, combustion, and expansion in a single...
418171, 123209, F02B 5300
Patent
active
057202516
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The invention relates to rotary engines having an inner and outer rotor co-rotating together and a pre-combustion chamber in which fuel is continuously burning. The invention also relates to a method of converting fuel energy into rotary force by a rotary engine.
BACKGROUND ART
Internal combustion engines using reciprocating pistons have numerous disadvantages which are too well known to trouble repeating. They are heavy, of complex construction, use many moving parts, subject to relatively rapid wear, and utilize fuel at a very poor rate of efficiency.
For many years proposals have been put forward for rotary designs of internal combustion engines. The best known such rotary engine is of course the epitrochoidal engine developed by Felix Wankel. However, that design is not truly rotary.
There is disclosed in French patent 672,398 a rotary piston pump, having an inner and an outer rotor which co-rotate together. This pump is of generally similar design to those known in the art since at least 1916 (Lind) and simply comprises an inlet port for admitting fresh air and an outlet port for exit of compressed air.
There is disclosed in French patent 2,177,388 what is described as a "ante-chamber" for use on a rotary piston engine. The ante-chamber functions both as an inlet, and an exhaust opening.
DISCLOSURE OF THE INVENTION
The invention, briefly, comprises a rotary engine for the conversion of fuel energy into a rotary force and comprising, an outer rotor mounted on outer rotor bearing means for rotation about an outer rotor axis, an inner rotor within said outer rotor mounted on inner rotor bearing means for rotation about an inner rotor axis, said outer rotor axis being offset relative to said inner rotor axis, housing means enclosing said inner and outer rotors, generally radial arms formed on said inner rotor, and recess means defined between said arms, inwardly projecting lobes defined by said outer rotor, spaced apart from one another, and defining outer rotor chambers therebetween, said inner rotor arms extending into said outer rotor chambers, at least around a portion of the rotational path of said rotors, fresh air intake port means for inducting fresh air into said outer rotor chambers in sequence at a predetermined point in the rotational path of said outer rotor, fuel intake port means for inducting a burning fuel/air mixture into said outer rotor chambers in sequence at a second predetermined point around the rotational path of said outer rotor, exhaust port means for exhausting gases from said outer rotor chambers in sequence at a third predetermined point around the rotational path of said outer rotor, and, means for igniting said fuel, whereby combustion of said fuel with said air in said outer rotor chambers, develops rotational force on said rotors.
Further advantageous features of the invention are lobes defined by leading and trailing sides, and head portions defined on said lobes having leading and trailing sides and having a generally rounded shape along their leading sides and a generally pointed shape along their trailing sides, and a precombustion chamber means located exteriorly of said outer rotor.
The invention also discloses a method of converting fuel energy into rotary force by a rotary engine. The method comprises the steps of inducting fresh air into said outer rotor chambers through a fresh air intake port means in sequence at a first predetermined point in the rotational path of said outer rotor, inducting burning fuel-rich fuel/air mixture into said outer rotor chambers containing said fresh air through fuel intake port means in sequence at a second predetermined point around the rotational path of said outer rotor, and discharging exhausted gases from said outer rotor chambers through an exhaust port means in sequence at a third predetermined point around the rotational path of said outer rotor.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective illustration of a rotary engine illustrating an embodiment of the invention;
FIG. 2 is a sectio
REFERENCES:
patent: 1968113 (1934-07-01), Weaver
patent: 3117561 (1964-01-01), Bonavera
patent: 3957021 (1976-05-01), Loyd
patent: 3976036 (1976-08-01), Muroki et al.
patent: 4235217 (1980-11-01), Cox
patent: 4932850 (1990-06-01), Valavaara
patent: 5066207 (1991-11-01), Valavaara
"Rotary Piston Machines"Felix Wankel Published: London Iliffe Books, 1965 p. 12 and Model Sheet 11.
Peng Lixin
Round George F.
Valavaara Viljo K.
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