SYstems for COnversion of MOtions and REnewable ENergies
MPRBC's FAQ
 Frequently asked questions 
Machine à Pistons Rotatifs à Battement Contrôlé / Rotary Pistons Engine with Controlled Beating
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25/04/2010 : How to mount the parts of the MPRBC and to understand its options and working ?
10/01/2010 : Why is the MPRBC simpler and more efficient than a conventional engine ?
28/12/2009 : Does a prototype of MPRBC exist and what are its mass and sizes ?
01/10/2009 : How works the MPRBC engines in simple words ?
06/08/2009 : What are the advantages and coherence of the POGDC concept, linked with the MPRBC ?
17/04/2009 : What are the main assets of the MPRBC ?
05/10/2008 : The global warming and the next energetic krach. Quid of transportation ?
30/05/2008 : Why are SYCOMOREEN's motor concepts so new and promising ?
25/04/2008 : What are the main present stakes in the world of the internal combustion engines ?


25/04/2010_______________________________________________________________________________________________________________________________
 HOW TO MOUNT THE PARTS OF THE MPRBC AND TO UNDERSTAND ITS OPTIONS AND WORKING ?

SYCOMOREEN is showing you the assembly part by part and the progressive working of a Rotary Pistons Machine with Controlled Beating (MPRBC).  The MPRBC is a volumetric motor with a pressurized fluid or a pump by giving it mechanical power.


Assembly and Working of a MPRBC sent by Sycomoreen


10/01/2010_______________________________________________________________________________________________________________________________
WHY IS THE MPRBC SIMPLER AND MORE EFFICIENT THAN A CONVENTIONAL ENGINE ?

SYCOMOREEN offers you a full immersion through the MPRBC's kinematics. It is especially simple, efficient and robust because its mechanism only needs pivoting joints inside ball-bearings (very little rubbings).


Full immersion through the MPRBC's kinematics by SYCOMOREEN


Thanks to an elaborate mathematical theory, the versions with rotary multilobed central cam allows any law of beating for the rotary pistons according to the cam's angle of rotation (fully customizable kinematics) ; optionally, to overmultilob the rotary cam multiplies the nominal compactness of the machine, by making it inhale much more fresh air during one revolution of the cam.

Therefore, the MPRBC's sophisticated mathematical theory is constrasting with their technical realization which is flexible, simple and economic, whereas the conventional engines with pistons/rods/crankshaft which choose to be theoretically poor and entails manufacturing difficulties and narrow parametrizations.


28/12/2009_______________________________________________________________________________________________________________________________
DOES A PROTOTYPE OF MPRBC EXIST AND WHAT ARE ITS MASS AND SIZES ?

SYCOMOREEN has recently published the commented photos of a MPRBC 
prototype

This MPRBC has an intrinsic capacity of 1150 cm3 and comes from the 4 x 20 law :

20 cm x 20 cm x 20 cm for 20 kg

With 2 rounds of a bilobed rotary central cam, it inhales 2300 cm3 of fresh air in 4-times cycle, what lets to foresee commercial engines of 200 HP (machined and managed with the current know-how of the automotive world and of the motorists), but it leads also to hypercompact pumps/compressors, or hybrid machines (motocompressor or motorecovering device of kinetic energy while pneumatically storing/unstoring pressurized air). To see also all the applications of MPRBC engines

Click to get the MPRBC diaporama commented by SYCOMOREEN
Diaporama 3 Mo, thank you for your patience during the downloading

01/10/2009_______________________________________________________________________________________________________________________________
HOW WORKS THE MPRBC ENGINES IN SIMPLE WORDS ?

The start comes from the rotary pistons in alternate motion. Then the pendulums move the grooves, and finally the grooves actuate via some ball-bearings a special mathematic rotary cam*. Sycomoreen proposes you to see it in this movie showing its last re-engineered MPRBC engine.

ROTARY PISTONS MACHINE WITH CONTROLLED BEATING
sent by Sycomoreen. -

* other mechanisms are possible, like the Sycomoreen's double Scotch Yoke system to reduce drastically the costs.

06/08/2009_______________________________________________________________________________________________________________________________
WHAT ARE THE ADVANTAGES AND COHERENCE OF THE POGDC, CONCEPT, LINKED WITH THE MPRBC ?

The claims of patent "Piston Octogonal à Géométrie Déformable Contrôlée" (POGDC's zip in French), set down by SYCOMOREEN since February 2009, unveils a radically new engine, useful as a motor and/or pump of which the kinematics and the remarkable features ensue of a a set of technical requirements and of principles of design. Here is a synthesis of it in 8 points:
_______
1. The POGDC engines are at same power at least 4 times more compact than traditional engines with pistons rods and crankshaft, or also at same volume, 4 times more powerful.

Waited Goal(s) : ultracompact motor, notably for hybrid architectures, special engines with high density of power (aeronautics, military vehicles or for competition).
_______
2. The POGDC engines require about 20 kg of usual steel per liter of cubic capacity.

Waited Goal(s) : drastic reduction of the manufacturing costs through the savings of raw materials and construction with low CO2 emissions.
_______
3. The POGDC engines have preferably valves with rotary obturator, allowing a full section out-flow of the gases with a new mechanism offering an entirely controlled variable valves' timing in phase and in lift.

Waited Goal(s) : reduction of the consumption by optimizing the breath of the engine or by achieving cycles with over-expansion  (notably the Miller's cycle) without changing the main motorizing mechanism.
_______
4. The POGDC engines optionally get small additional pistons to adjust the compression rate (VCR) on a range going from 5 to 25. These pistons preferably carry the injector and/or the sparking plug (see also the notice of 27/04/2009).

Waited Goal(s) : optimization of the combustion for any RPM, especially for overfed engines. Downsizing and reduction of the specific consumption.
_______
5. The POGDC engines convert their motion with special cams and profiles possibly over-multilobed

Waited Goal(s) :

  a) To multiply the compactness (defined at the 7th shortcoming) , by increasing the number of motorizing cycles required for one revolution of the most first rotary shaft of the engine.


   b) To finely control the volumes of the rooms, and thus the variations of temperature and pression at the times of compression : it opens new perspectives as well for conventional combustion (gasoline or Diesel) than for not conventional (Controlled Auto Ignition / CAI, High Charge Compression Ignition / HCCI, hybrid cycle / "Diesotto")

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6. The POGDC engines are intrinsically and naturally well balanced.

Waited Goal(s) : to get power on high RPM, no vibrations, less and even no shock absorbers and parasitic noises.
_______
7. The POGDC engines allow to change nearly continuously the volumic capacity by combination of active/shut down chambers.

Waited Goal(s) : reduction of the consumption by turning off a maximum of chambers in order to put those which remain active at an optimum of specific consumption, whatever the load of the engine.
_______
8. The not rotary POGDC engines are combining themselves advantageously with until 4 rotary pistons machines with controlled beating (MPRBC), which answer to the same specifications' overview as the POGDC machines. Several combinations of POGDC/MPRBC are possibles with rotary over-multilobed cams.

Waited Goal(s) : to get a wide range of engines coming from a small set of standardized parts, big series breaking the costs and to increase the compactness of the motor.


17/04/2009_______________________________________________________________________________________________________________________________
 WHAT ARE THE MAIN ASSETS OF THE MPRBC?

SYCOMOREEN is inviting you to watch this movie which shows the essential technical characteristics and possibilities of the PRBC engines, and also its economic and industrial issues.

Machine with Rotary Pistons and Controlled Beating (MPRBC)

05/10/2008
 _______________________________________________________________________________________________________________________________
Ecouter Europe 1 ! THE GLOBAL WARMING AND THE NEXT ENERGETIC KRACH. QUID OF TRANSPORTATION ?

SYCOMOREEN
invites you to listen to the radiobroadcast
November, 13th 2006 of Europe 1 animated by Jacques PRADEL
(in French) and  proposes you to read the Sycomoreen's commented summary of it

to listen to the Europe n°1's  radio broadcast (French)

Invited :

Marie Odile DELACOUR
independant Journalist, author of "Climat : la Grande Menace" [Climate : the Big Threat]
Jean Marc JANCOVICI, Consultant & Engineer, 
Specialist of climate and energetic issues,
                                     Co-author of "Le Plein s'il vous plait !" [
full tank, please !]

30/05/2008 _______________________________________________________________________________________________________________________________
WHY ARE SYCOMOREEN'S MOTOR CONCEPTS SO NEW AND PROMISING?

SYCOMOREEN invites you to read his note of  "synthesis motors and perspective"


25/04/2008 _______________________________________________________________________________________________________________________________ 
WHAT ARE THE MAIN PRESENT STAKES IN THE WORLD OF THE INTERNAL COMBUSTION ENGINES ?
 
Extrait de  
  ||     Extracted from
http://www.auto-innovations.com/
Aller voir l'interview complète || To see the full Interview (only in French)
Mots-clé français de l'interview
réduction de taille du moteur ; désactivation de chambre de combustion ; gestion variable de chambre ; injection directe ;
recirculation des gaz ;  auto allumage contrôlé ; taux de compression variable ; concepts moteurs non conventionnels


English key words of the interview :
 downsizing ; rooms' deactivations ; Variable room management ; direct injection ; exhaust gases recirculation (EGR) ;
Controlled Auto Ignition (CAI) ; various compression ratio (VCR) ; non conventional motor concepts

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The Naturally Energetic Movement !
Die Natürlich Energische Bewegung !
¡ El Movimiento Naturalmente Enérgico !
SYstems for COnversion of MOtions and REnewable ENergies
MPRBC's FAQ
 Frequently asked questions