Abstract: The system controls a support (1) interposed between an engine (2) and the structure (3) of an automobile vehicle comprising a work chamber (7) and an expansion chamber (8) filled with liquid and interconnected by a passageway (9), in which the work chamber (7) is partly defined by an elastic movable wall (10) comprising a push member (11) with which cooperates a driving device (12) for applying to this partition wall movements in such manner as to produce in the chamber (7) pressure forces synchronous with the harmonics of the vibrations of the operation of the engine. The system is characterized in that the driving device comprises an electric motor (12) connected to the push member (11) by actuating means (16) actuating in accordance with a reciprocating linear motion, and the system comprises means (22) for controlling the electric motor (13) in speed and angular position by a signal of the operating cycle of the engine.

Abstract: The invention proposes a hydroelastic support (10) intended to be interposed between two assemblies to be suspended one with regards to the other, of the type comprising two armatures (12, 14) joined together by a block of elastomer material (16), a working chamber (26) and an expansion chamber (33), connected together by a communication passage (34), and of the type in which the working chamber (26) is delimited in part by a movable diaphragm (30) whose external face (42) comprises a push-rod (44) with which there cooperates a device of the connecting-rod (50) and crank (62, 66) type for driving the movable diaphragm, in which the small end (54) of the connecting-rod (50) is connected to the push-rod (44) and in which the shaft (66) for driving the crank (62) in rotation is mounted so as to turn in a bearing (70) fixed to one (12) of the two armatures.

Abstract: The invention proposes a hydroelastic support intended to be interposed between two assemblies to be suspended by one with regard to the other, especially for the suspension of an engine in a motor vehicle, of the type comprising two armatures connected respectively to the two assemblies, these two armatures being joined by a block of elastomer material, the support comprising at least one working chamber delimited at least in part by the block of elastomer material, and an expansion chamber, these two chambers being filled at least partially with liquid and linked together by a communication passage, and of the type in which the working chamber is also delimited in part by a movable diaphragm in elastic material and whose external face comprises a cam follower with which a cam of a drive device of the movable diaphragm cooperates in order to apply to the latter displacements controlled in such a way as to create in the working chamber pressure forces synchronous with the harmonics of the vibrations of one of

Abstract: The support is so arranged as to have a wider damping characteristic. For this purpose, it comprises two expansion chambers connected to the same work chamber by ducts having different characteristics so that the liquid contained in these ducts is put into resonance at different frequencies. The two expansion chambers are disposed concentrically to each other on the same side of the work chamber and are defined by a separating partition and by a single diaphragm.

Abstract: Fixing means (4, 5) extend axially throughout this support which has a generally annular shape. It comprises an annular elastically yieldable body (1) connected to two frames (2, 3), a flexible elastically yieldable wall (8) fixed between the two frames (2, 3) and defining with the outer surface of the body (1) a working chamber (A). This chamber communicates with an expansion chamber (B) through a duct (16). The support also includes means for limiting its axial and radial movements. Such a support has a particularly low specific stiffness both in the axial and transverse direction, which improves the filtering of high frequency vibrations, while affording a good damping of low frequency and large amplitude trepidations. It is moreover easy to manufacture and therefore of relatively low cost.

Abstract: The articulation comprises an inner armature (4, 9) and an outer armature (5) interconnected by a mass (3,8) of elastomer, in which are formed two chambers (6, 7) filled with liquid and interconnected through a passageway (13). The articulation is formed by two elements (1, 2) each constituted by part (4, 9) of the inner armature and a part (3, 8) of the mass of elastomer defining cavities (6,7) which allow an axial removal of the mould, one (1) of the elements further comprising the outer armature (5) while the other element (2) comprises a secondary armature (10). The outer armature (5) and secondary armature (10) are interconected by a setting operation after having axially clamped together the two elements (1, 2).

Abstract: A hydroelastic mount for interposition between two units to be insulated from each other, for example a motor-drive unit and the structure of a motor vehicle, the mount comprising an elastic mass (1) disposed between two carrying armatures (17, 18), two chambers (6, 12) which are filled with liquid, interconnected by a communication passageway (8) and at least partly defined by elastic walls (1, 13). The two chambers (6, 12) have an annular shape and the mount defines a central empty space (21) for the passage of a connecting rod (20) between one of the carrying armatures (18) and the unit to which it is connected. This arrangement simplifies the assembly when the unit to be insulated is placed thereunder.

Abstract: The support is particularly compact, simple in construction and very reliable in operation. It comprises a main composite unit (1) comprising a first fixing element (3) and a mass of elastic material (2), this mass forming, on one hand, a massive portion (6) of a roughly frusto-conical general shape disposed between the first fixing element (3), part of this main unit between the two armatures (4, 5) being gripped between a housing (8) and a cover (9) fixed to each other and constituting a second fixing element. The housing defines with the elastic mass a work chamber (11), an expansion chamber (12) and a communication passageway (13) interconnecting with the chambers.