systèmes pour la conversion de mouvements et d'énergies renouvelables
Motors
& Pumps
Concept MPRBC
Concept POGDC

Special
STIRLING's engines

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ROTARY PISTONS ENGINES WITH CONTROLLED BEATING  (MPRBC)

Principles Four times cycle Conversion of the motion System for variable valves' timing (VVT) System to regulate
the compression rate



SYCOMOREEN has designed for its PRBC engines a simple and efficient system of continuous variation of the compression rate between values of 5 to 25 permitting a better mastery of the combustion, the overfeeding and encouraging the downsizing and the cleaning of exhaust gases. 


The 4 floors of a PRBC engine

The E4 floor is dedicated to the conversion of the rotary alternated motion of the pistons in rotary continuous of the output shaft

The E3 floor is dedicated to the management of the exchanges of gases of the machine
The E2 floor is dedicated to the thermomechanical conversions
The E1 floor is dedicated to the injection of fuel and the regulation of the compression rate.

Exploded view of individual devices to regulate compression rate on each combustion room

Exploded view of E1 floor

The E1 floor is composed by the closing plate 5, by composed 4 wholes including each
- a modificating volume organ 3A, 3B, 3C, 3D
- a sliding part in the boring of a hollow body 4A, 4B, 4C, 4D bound of the closing plate 5
- an injector 2A, 2B, 2C, 2D contained in the sliding part

 The boring of each of the hollow bodies 4A, 4B, 4C, 4D communicate with their correspondent room 42A, 42B, 42C, 42D.

The PRBC engines have a modificating volume organ (3) communicating with the room. This organ is moving between an advanced position and a remote position

     Thus, the rate of compression can be adapted to approach of the optimal conditions of working :

-         strong rate if the organ (3) is in advanced position

-         weak rate if the organ (3) is in remote position

According to the type of chosen combustion (gasoline or Diesel), the regulating organ (3) can carry an injector and/or a spark-plug for of ignition (2).


     In any case, the modificating volume organ 3A, 3B, 3C, 3D forms a piston and permits a fast modification of the volume of compression and/or the volume of aspiration of the rooms while penetrating more or less in the rooms of combustion. This piloting can make itself notably by injection of an incompressible fluid under pressure in the hollow body 4A, 4B, 4C, 4D or by an electric motor equipped with a screw without end - reducer pushing or withdrawing the piston formed by the regulating volume organ 3A, 3B, 3C, 3D. This piloting can make itself independently for one or the other of the combustion rooms.

        The amplitude of regulating depends on the measurements of the parts. To simplify the management, the adjustable pistons 3A,3B,3C,3D could be supported and could be manipulated by a common mechanism, but then, the regulating will be not independent of a room to the other.


Principles Four times cycle Conversion of the motion System for variable valves' timing (VVT) System to regulate
the compression rate
Performances
& Applications
systèmes pour la conversion de mouvements et d'énergies renouvelables
Motors
& Pumps
Concept MPRBC
Concept POGDC

Special
STIRLING's engines

Back to the main menu