In a general way, in the setting of a 4 times cycle :
- one has 4 peripheral
rooms with variable volume
- and a central room
- every time a head of
piston comes closer of the cover, one will have either a compression, either an
exhaust on the peripheral rooms
- every time a head of
piston moves away of the cover, one will have either an explosion /
relaxation, either an intake on the peripheral rooms
- in the same time, the central room knows a cycle two times shorter
than the one of peripheral rooms : it inhales 2 times more
often the cool air.
With the respect of the chronology for each room :
1.
Intake
2.
Compression
3. explosion/relaxation
4.
Exhaust
The non rotary
POGDC engine can also be exploited with 2 times cycles of type
(admission / exhaust) and (compression / relaxation) by a
vigorous sweep of burnt gases by the cool air at to every end of
relaxation.
4 times cycle for
rotary POGDC engine
Above,
one makes the
octogonal piston rotate inside the fixe cover
admission =
intake,
compression
explosion/détente=explosion/relaxation
échappement=exhaust
in an opposite way, below,
the
cover moves around the octogonal piston of which the
horizontal and vertical medians are fix :
In the both
cases, admission
and exhaust are permanent and valveless ,
but
the explosion in the peripheral rooms takes place on
only one sid..
Improvement
of rotary POGDC with fixed cover
The optimized rotary POGDC engine is the first
motor in the world to grant 4 times cyles :
- while having the advantages of the two times cycles
- without valves, but only a permanently blowing turbine of the fresh air.
- with very simple overfeeding and/or retraining of
the burnt gases (to see the patent (French)
for the details)
- 10 explosions on only one round of the medians of the rotary
octagonal piston (equivalent
to a 20 cylinders powered by 4 times cycle and rod / crankshaft kinematics)
- perfectly balanced
One joins blowing and
sucking devices, respectively of the fresh air and the burnt gases. All
1/4 of round, 2 simultaneous explosions take place in the peripheral
rooms, in addition to those of the central room that take place all 1/2
round.
(nevertheless, the central room can of preference to be used for the
air storage)
In any case POGDC engines
can be used in air / hydraulic motor, with the following features :
- one has rooms with variable volume
- every time the volume of a room increases, one will have the
injection of the fluid under pressure
- every time the volume of a room decreases, one will have the exhaust
of the fluid
With the respect of the chronology for each rooms:
1.
injection of pressurized fluid into the engine
2. Exhaust of the fluid
The POGDC engines can
become the air / hydraulic pumps, with the following features :
- one has rooms with variable volume
- every time the volume of a room increases, one will have the
admission of the fluid under weak pressure
- every time the volume of a room decreases, one will have the
repression of fluid under pressure
With the respect of the chronology for each rooms:
1.
admission de fluide under weak pressure
2. repression of fluid under pression
