Internal-combustion engines – Rotary – With transfer means intermediate single compression volume...
Patent
1997-07-18
2000-09-19
Koczo, Michael
Internal-combustion engines
Rotary
With transfer means intermediate single compression volume...
418224, 418226, F02B 5300
Patent
active
061196495
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to an engine with one or more annular cylinders with round cross section, in each annular cylinder there being at least two rotating pistons with cross sections which correspond to the cross sections of their annular cylinder.
It is a rotating piston machine, with annular cylinders and pistons which rotate therein, with rotary valves as shut-off parts and stationary working walls.
The invention is an internal combustion engine which belongs in the domain of rotating machinery. In it the energy is used directly to produce rotation without the intermediary of pulsating movements. In versions of the invention integrated use of cylinder walls as hydraulic and/or pneumatic pumps is possible.
BACKGROUND AND SUMMARY
A rotating piston machine is known (DE-38 25 354 A1) which is made with rotary valves which have the same rpm and thus necessarily a diameter roughly the same as the annular cylinders. The rotary valve fits from the outside into the annular cylinder, by which the box dimension roughly corresponds to twice that of the annular cylinder or the rotor disk diameter. The fresh gas flows are deflected by 180 degrees in front of the piston in order to be able to initiate ignition and expansion behind the piston.
Conversely, the object of this invention is to devise a rotating piston machine with rotating pistons in which the gas flows need not be deflected, so that pulsating motion is avoided.
The engine according to the invention contains one or more annular cylinders with a round cross section which is preferably circular. In the annular cylinder are at least two rotating pistons with a cross section which is matched to the cross section of the annular cylinders which are located on the periphery of a rotor disk, preferably at the same angle to one another. The annular cylinder is divided by disk cams which are made as rotary valves into several cylinder chambers, of which at least one is an expansion chamber. At least one other cylinder chamber can be an intake compression chamber.
Instead of an intake compression chamber, there can also be an external compressor which routes the gas mixture directly from the outside into the expansion chamber. In doing so, in front of and behind the piston or pistons only the working steps which are carried out in the expansion chamber can take place. The compressor handles intake and compression. In addition, there can be cylinder chambers as hydraulic and/or pneumatic pumps. In the embodiment with the intake compression chambers each expansion chamber contains at least one overflow channel which discharges with its one port into an intake compression chamber and with the other port into the expansion chamber. The expansion chamber furthermore contains at least one exhaust channel, the intake compression chamber at least one air intake channel.
In the embodiment with the intake compression chambers the overflow channel is arranged such that with one of the rotary valves via one control recess the gas column in the overflow channel and with another control recess the piston passage between the intake compression chamber and the cylinder chambers can be controlled.
One air intake channel discharges into one cylinder recess in the intake compression chamber, the exhaust channel discharges in the expansion chamber via a cylinder recess.
Compared to known rotating piston machinery, the engine according to the invention has fewer wearing parts and thus lower friction losses. It does not require internal oil lubrication between the inside wall of the cylinder and the outside wall of the piston since it is unnecessary to use piston rings. Gaskets where the rotor disks fit into the cylinder wall and gaskets on the rotary valves can generally be abandoned.
The gas flows always maintain the same direction in both compression and expansion. In the embodiment with intake compression chambers, when the pistons move from the intake compression chamber into the expansion chamber the fresh gas is retained in the overflow channel until the piston
REFERENCES:
patent: 1101794 (1914-06-01), Friend
patent: 1960971 (1934-05-01), Fisher
patent: 2779318 (1957-01-01), Strader
patent: 4003348 (1977-01-01), Suzuki et al.
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