OCTOGONAL PISTON WITH DEFORMABLE CONTROLLED GEOMETRY (POGDC)
1.
Respect of the specifications
Specifications of the
new architectures of the new SYCOMOREEN engines
the POGDC Concept's answer
| Function n° |
Criterias |
Levels |
Flexibility |
Respect |
Commentary |
| 1:
To encourage the
compactness |
The compactness defined by: C =
Vasp / Vmot
with :
Vasp: aspirate volume on 2 towers of motor tree
Vmot |
C = 0,15 |
At least |
YES |
What represents a downsizing of factor 4:
- either 4 times more power to equal volume
- either a 4 times smaller clutter to equal power
The overmultilobed
cams multiply this compactness by a factor k again. |
| 2:
To permit a
sufficient maximal power |
The power maximal délivrable
by the motor |
70 HP |
At least |
YES |
Power of a city-car completed by about 40
HP of an electric traction |
| 3:
To make vary the
output power by sufficiently small step |
Percentage
of the available total power that every landing represents |
25% |
+0% |
YES with 2 pairs of pistons or more |
mimimum 5 steps of output power between 0
and 100%, allowing every room to function at full load, therefore in
optimal conditions. |
| 4: To use an
optimized 4 times cycle |
To allocate comparable duration for the
admission, the compression, the explosion and the exhaust |
25% |
+/- 5% |
YES |
Every time of the cycle requires a
sufficient length to fill its role without energy
losses . One will be able to encourage the admission and the
explosion slightly. |
fast transition between
the BDC / TDC
Duration of passage with more of 90% of the TDC/BDC
__________________________________
duration of the half of a cycle |
10% |
+ 0% |
YES |
The fast clearing of the TDC reduces the
flights of fluid, the thermal losses trough the breech, limit the
formation of NOx and encourage compatibility with the auto-ignition
(HCCI,CAI...). On the rod / crankshaft system, it represents
20% of the length of the half of a cycle |
| 5: To permit a
high liberty of variable wedging for the valves |
Amplitude of
regulated angle of wedging for the valve |
+ / - 360° |
At least |
YES |
The variable wedging permits
indispensable adjustments to respect the anti-polluting norms and to
grant the power of the motor. It also allows to achieve the Miller
cycle by an advance of the admission closing (reduced consumption) |
| Speed of piloting of the wedging |
1 / 10 of the time necessary to 1 motor
cycle in the concerned room |
At more |
depends on the actuators' efficiency |
The variable wedging must be fast in
comparison to duration of one motor cycle. |
| Independence of a room to the other |
Total independence of a room to the other |
/ |
YES |
It is necessary to be able to adjust
independently each room to activate /
disactivate the combustion at will . |
| Possibility to maintain a valve
constantly in the same position while the engines runs |
Open, closed or partially opened |
All possible position |
depends on the actuators' speed |
In order to continuously plug / open the
valves , what can have some applications to extinguish some
comustion rooms and even to convert them into compressor in the aim of
a compressed air storage for braking phases |
| 6: To use some
technologies having given their proofs |
All processes and technologies previously
signalled |
Not to require processes or unknown
mechanical organs |
/ |
YES |
Paradoxically,
only basing the design on the existing processes make possible the
industrial development of new technologies. |
| Age of the process or the technology |
5 years |
At least |
Number of products using the process or
the technology
or
number of factories having industrialized the process / technology |
100 000 or 10 |
At least |
YES |
The know-how of the motorists and major
manufacturers of components must be pertinently re-used. |
| 7: To make
continuously vary the volumetric ratio |
Possible values for the volumetric report |
of 7 to 24 |
+ / - 5% |
YES |
To adjust this volumetric ratio is
synonymous of a high mastery of the overfeeding for the motor,
permitting compactness (downsizing) and reduced consumption, thus
pollution. |
| Speed of the volumetric ratio's regulation |
1 / 10 of the time necessary to 1 motor
cycle in the concerned room |
At more |
depends on the actuators' efficiency |
The regulating of the volumetric ratio
must be quick compared to the duration of one motor cycle |
| 8: To have a
perfectly and intrinsically well balanced engine
|
Amplitude of the displacement of the G
center of inertia for of the engine during the motions of all its parts |
0 |
/ |
YES |
No
vibratory strength is generated thus. |
| Variation of the moment of
inertia for the engine in relation to all axis passing by G
during the motions of its parts |
0 |
/ |
YES |
No
vibratory torque is generated thus. |
2.
Applications in motorization
The
numerous advantages and parameterizations offered by the POGDC concept
demonstrate its
particular relevance in all motorized applications...
2.1.
Cars
The
following assets of the POGDC concept will be especially interesting in
the motorization of a car :
- its variable output power
- its possibilities of variable wedging to manage valves
- its favorable kinematics for
non conventional combustions like auto-ignition and detonation(HCCI,
CAI, ATAC, Diesotto concept...),
- its air storage for the kinetic recovering while braking
All
type of
car can welcome the POGDC engine, from the city-car to the big 4x4, and
these vehicles,
thanks to the gains of space offered by
the POGDC's compactness, will be able to be
equipped with
batteries and more powerful electric motors, that is to say to become
the FULL Hybrid, propelled
by two ways of which one is not dominant as regard to the other.
The
ultra-compactness of the POGDC engines lets consider completely new architectures like one
motor by axle, and even by wheel (4x4 without transmission therefore
less consuming), without talking about all new
possible organization of the space allocated to the passengers (and not
to the motor...) inside the vehicle,
that can be increased practically from 50% to equal measurements of the
vehicles
Important note: it is possible to decline a whole range of powers with only one model of POGDC and only one model of PRBC. for example, the POGDC 1650 and the PRBC 1150 motorize any car or truck from 70 Hp. to several hundreds of Hp. In an industrial vision, it permits savings of extremely important scale and a total adaptability of the motorization offer in relation to the market's evolution and/or the marketing of a manufacturer of engines and motorized contraptions.
2.2.
Motorcycles / "2 wheels"
The following assets of the POGDC concept will be especially interesting
in the motorization of the "2 wheels" :
- its high volumic power
- the absence of vibration procuring a comfort and a better roadholding
- the torque at low RPM which lead to a good reactivity of the
motorcycle at the starting or re-launch
All
type of
motorcycles can
welcome the POGDC engine, from the moped / scooter
until the hypersportive
while passing by the "road motocycle". Thanks to the gains of space
offered by the POGDC's compactness, the tanks / ranging will be able to
be a lot bigger. The
motorcycles will be also lighter and will be able to equal weight, to
take more of passengers and/or luggage and fuel.
The
ultra-compactness of the POGDC concept lets
consider completely new architectures with one motor by wheel, opening
the way thus by "all land" motorcycles
with 2 driving wheels (2x2) of which
the capacities of ascension will be better, as well as the safety in
case of breakdown of one of the motors.
2.3.
Light portable tooling
The
following assets of the POGDC concept will be especially interesting in
the motorization of the light portable tools :
- its big volumic power
- the absence of vibration procuring a comfort to the user and the
preservation of his/her muscles and joints.
It can
constitute a small
revolution for the workers who are victims at short-term of
tingles, stiffness because of the vibrations of their tools,
and
at longer-term, they endure engrave
musculo skeletal stroubles.
One will try
here to keep an
equal power with a smaller motor, therefore lighter, thus
relieving the arms
and the backbone of the operators.
2.4.
Light motorized rolling tools
The
following assets of the POGDC concept will be especially interesting in
the motorization of the light motorized
rolling tools:
- its high volumic power
- the absence of vibration procuring a comfort to the user and the
preservation of his/her muscles and joints.
One will try here to multiply the power
to equal volume to make the tool more efficient.
2.5.
Trucks
The
following assets of the POGDC concept will be especially interesting in
the motorization of the trucks :
- the very strong torque at low RPM allowing an optimal traction of the
load
- the abscence of vibration procuring a comfort for the dwellings and
the residents
All type of
truck can welcome the POGDC engine. A
truck of 20 Tons wastes at
every braking an energy equivalent to the one of 20 cars achieving the
same braking : for example an air reserve supplied by the central room
of the POGDC engine as a compressor, the same room becoming an air
motor at the time of the relaxation. Thanks
to the gains of space offered, the trucks will be able to be equipped
with efficient systems of energy recovery when braking ; the gains
of consumption are likely to pass the easily 30% on a non higway
course. To
equal power, the lowering of the mass of the motor, the reduction
of /its volume and the kinetic energy recuperation when
braking
are
vital to better extract the Diesel fuel's energy, especially
nowadays where the road
transportation, boosted by the globalized economy, develops itself in
an exponential way.
2.6.
Light and middle aviation
The
following assets of the POGDC concept will be especially interesting in
the motorization of the light and middle planes :
- the absence of vibration procuring a better stability to the device,
especially for motors bound of the wings
- the POGDC's lightness encouraging the takeoff and limiting the bending
of the wings when they must carry them
- the POGDC's power, in particular at high RPM because they are
perfectly well balanced.
- the reduced size of the engine, encouraging the
wing's lift by the combination of :
- a reduction
of the turbulences generated by the contounement of the fluid around
the motor
- an increase of the wing bearer surface
The rotary POGDC engines are staying at the crossroads of the turbines and positive displacement turbocompressed engines : they can be adapted for high densities of power, placing them on the same level than the turbopropellers.
The POGDC's ultra-compactness lets consider completely new
architectures of airships even :
- with a light
central motor but very powerful sending its power:
-
via driveshafts: the
wings, whose rigidity would be assured in part by the structure of the
driveshafts,
would be
equipped thus only with helixes and would maximize their lift while
lowering their trail.
- via an electric
network with the help of a generating electricity station and with
electric
motors in tip of wing, adjustable.
- or the addition of one or several rotors of helicopter to a structure
standard of plane
And even the most
original projects like of the "double thermal / electric hybrid" AND
car / plane ! !
Let's mention the very interesting works of the society Milner http://www.milnermotors.com/aircar.htm
Therefore, the way is opened to airships of
vanguard,
potentially with vertical takeoffs
and landings (VTOL) well more
efficient and sure thanks to the multiplication of the motors and to
the total independence between the horizontal and vertical propulsions.
2.7.
Middle and heavy military contraptions
The
following assets of the POGDC concept will be especially interesting
in the motorization of the middle / heavy military contraptions
- the particularly aim of vibrations' absence in submarines and in all
applications requiring the discretion.
- the lightness of the motor encouraging quick mobilities , notably on
heavy armored contraption where 1 second of delay can be fatal
- the high power very useful to propel the chariots of
assault, or the cargo airplanes' helixes.
2.8.
Vehicles of leisure
The following assets of the POGDC concept will be especially interesting
in the motorization of the leisure vehicles
- the absence of vibration procuring the comfort
- the lightness and the power of the motor searched for having a
dynamic behavior of the vehicle
2.9.
Hydraulic motors
The POGDC concepts can be nourished by pressurized fluid and turn themselves
into into perfectly balanced and compact hydraulic or pneumatic
motors with
high torque at low RPM. To avoid all neutral point during the motion,
it is
sufficient to join 2 POGDC engine where their the 2 shafts are wedged
with a precise angle.
The applications are extremely vast, from the actuating of an
excavator's caterpillars until the hydrolelectric powerplants,
especially bass, middle and even high fall (to see as small hydraulics)
3.
Applications in pump / compressor
The POGDC engines are reversible
and under
the condition to have a source of rotary mechanical energy ; they turn
themselves
into extremely compact and perfectly well balanced pumps / compressors,
resistant to pressures going until several score of Bar.
It
is even possible with
a same motor block to have rooms of combustion and other pneumatic
rooms of air. By a simple
game of floodgates "all or nothing", it
is possibleduring the braking to store compressed
air in a tank, and during
the next acceleration, reinject the compressed air in the pneumatic
room to re-launch the vehicle.
Instead of being lost in the
brakes as heat, the kinetic energy of braking is recycled thus with an
excellent output and
a very reasonable clutter. It is a simple and efficient means to
decrease considerably
the consumption and the pollution, especially in
urban environment.
