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US 3,955,903 AGranted
Rotary piston engine with improved housing and piston configuration
AssigneeAranka Elisabeth DE Dobo
InventorTibor Louis de Dobo
Life of this patent
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Abstract
A rotary piston engine has a plurality of explosion chambers situated around the periphery of the housing and includes within the housing a piston. According to the preferred embodiment, a housing having H recesses would contain a piston having P = H-1 lobes. According to the preferred embodiment, the structure of the housing relative to the piston, and vice-versa, has been improved to give optimum results. The relationship between the housing and the piston is such that it may be characterized by an optimum mathematical relationship which can make the construction of such machinery simpler than has been heretofore known. Additionally, the relationship between the improved piston and housing configuration is related to other engine parameters such as the compression ratio and efficiency.
Claims6
An improved multilobe rotary piston engine comprising:
- a housing including H lobes and having an interior cavity profile described by the curve generated by the locus of a point P.sub.h within the diameter D.sub.1 of a rolling circle as it revolves around a second fixed circle of diameter D.sub.0 ;
- and
- a piston having P lobes and a profile which permits operative engagement of the piston with the profile of the housing profile, said piston having a profile described by a curve generated by the locus of a point P.sub.p within the diameter D.sub.3 of a rolling circle as it revolves around another fixed circle of a diameter D.sub.2 ;
- wherein the relationship between the profile of the housing and the profile of the piston is described as follows:
- a. H = P + 1
- b. H = D.sub.0 /D.sub. 1
- c. P = D.sub.2 /D.sub.3 ##EQU45## Where:
- H = The number of lobes on the stationary housing;
- P = The number of lobes on the piston;
- R = Minimum interior radius of the housing;
- e = The eccentricity of the rotary piston;
- D.sub.0 = Fixed circle diameter of the stationary housing;
- D.sub.1 = Rolling circle diameter of the stationary housing;
- D.sub.2 = Fixed circle diameter for the rotary piston;
- and
- D.sub.3 =Rolling circle diameter for the rotary piston;
- wherein said engine is further limited to operation in the following range of L:
- .ltoreq. l .ltoreq. 1.5;
- and,
- L = .sqroot.E/K
- Where:
- L = Limitation range factor;
- E = the engine compression ratio;
- and,
- K = R/e .
22 more elements
An improved multilobe rotary piston engine comprising:
- a housing including H lobes and having an interior cavity profile described by the curve generated by the locus of a point P.sub.h within the diameter D.sub.1 of a rolling circle as it revolves around a second fixed circle of diameter D.sub.0 ;
- and
- a piston having P lobes and a profile which permits operative engagement of the piston with the profile which permits operative engagement of the piston with the profile of the housing profile, said piston having a profile described by a curve generated by the locus of a point P.sub.p within the diameter D.sub.3 of a rolling circle as it revolves around another fixed circle of diameter D.sub.2 ;
- wherein the relationship between the profile of the housing and the profile of the piston is described as follows:
- a. H = P + 1
- b. H = D.sub.0 /D.sub.1
- c. P = D.sub.2 /D.sub.3 ##EQU46## Where:
- H = The number of lobes on the stationary housing;
- P = The number of lobes on the piston;
- R = Minimum interior radius of the housing;
- e = The eccentricity of the rotary piston;
- D.sub.0 = Fixed circle diameter of the stationary housing;
- D.sub.1 = Rolling circle diameter of the stationary housing;
- D.sub.2 = Fixed circle diameter for the rotary piston;
- and
- D.sub.3 = Rolling circle diameter for the rotary piston;
- wherein said engine is further limited to operation in the following range of C.sub.h and C.sub.p :
- 2. 75 >
- C.sub.h .gtoreq. 1;
- and,
- 3 >
- C.sub.p .gtoreq. 1
- Where:
- ##EQU47##
- K = R/e;
- and, ##EQU48##
23 more elements
An improved multilobe rotary piston engine comprising:
- a housing including H lobes and having an interior cavity profile described by the curve generated by the locus of a point P.sub.h within the diameter D.sub.1 of a rolling circle as it revolves around a second fixed circle of diameter D.sub.0 ;
- and
- a piston having P lobes and a profile which permits operative engagement of the piston with the profile of the housing profile, said piston having a profile described by a curve generated by the locus of a point P.sub. within the diameter D.sub.3 of a rolling circle as it revolves around another fixes circle of diameter D.sub.2 ;
- wherein the relationship between the profile of the housing and the profile of the piston is described as follows:
- a. H = P + 1
- b. H = D.sub.0 /D.sub.1
- c. P = D.sub.2 /D.sub. 3 ##EQU49## Where:
- H = The number of lobes on the stationary housing;
- P = The number of lobes on the piston;
- R = Minimum interior radius of the housing;
- e = The eccentricity of the rotary piston;
- D.sub.0 = Fixed circle diameter of the stationary housing;
- D.sub.1 = Rolling circle diameter of the stationary housing;
- D.sub.2 = Fixed circle diameter for the rotary piston;
- and
- D.sub.3 = Rolling circle diameter for the rotary piston;
- said engine further including a planetary gearing system comprising:
- an internal gear G.sub.h of diameter D.sub.h affixed firmly to the stationary housing;
- an internal gear G.sub.p of diameter D.sub.p affixes firmly to the piston;
- a planetary gear D.sub.c of diameter D.sub.c operatively engaging both the internal gears G.sub.h and G.sub.p ;
- and
- an output shaft drive D.sub.s of diameter D.sub.s operatively engaged with said planatary gear;
- wherein the diameters of D.sub.h, D.sub.p, D.sub.c and D.sub.s are related as follows:
- a. D.sub.h = 2 . H . e
- b. D.sub.p = 2 . P . e and ##EQU50## Where:
- D.sub.h = Stationary housing internal gear diameter;
- D.sub.p = Rotary piston internal gear diameter;
- D.sub.c = Planetary gear cam toothed sprocket diameter;
- and
- D.sub.s = Output shaft fixed tooth sprocket diameter.
27 more elements
Dependencies are inferred from the claim text.