Abstract: A compact powertrain, comprises a first engine and a second engine and means for rotationally connecting said engines to a common output shaft; the engines have drive shafts with axles parallel to each other; connection means between said drive shafts and an output shaft, moreover, they comprise first coupling means on said first drive shaft for connecting said first drive shaft to the output shaft, and second coupling means for connecting said second drive shaft to said output shaft; the delivery of the rotational torque and power is controlled by the adjustment of each engine and said coupling means, being adapted to selectively connect/disconnect said drive shafts from said output shaft; the means for connecting the rotation of the two engines, left and right, to the output shaft comprise a clutch assembly and a gearbox; the clutch assembly is provided with a single clutch for drive shaft which connects or disconnects the respective drive shaft with a corresponding input and transmission shaft inside the g

Abstract: The device (10) comprises an electric motor (12), a reduction gear (14), a shaft (16) operable by the motor (12) via the reduction gear (14), and a drum (18) mounted on the shaft (16) so as to be connected for rotation therewith but free to slide axially relative thereto. The drum (18) has on its cylindrical lateral surface a first groove (20) in which first studs (22) drivingly connected for translation each with a respective shift fork (24) are guided, whereby the rotational movement of the drum (18) is converted into a translational movement of the studs (22), and hence of the forks (24), to bring about the engagement of the gears. The drum (18) also has a second groove (40) in which a second, axially stationary stud (42) engages.

Abstract: The control device comprises an electric motor, a reduction gear, a shaft operable by the electric motor via the reduction gear, and a drum mounted on the shaft so as to be connected for rotation therewith but free to slide axially relative thereto. The drum has on its cylindrical lateral surface a guide groove in which a plurality of studs are guided, each of the studs being drivingly connected for translation with a respective shift finger in such a manner that the rotary motion of the drum is converted into the translational motion of the shift fingers to control the engagement of the gears according to predetermined modes of operation. The control device further comprises a locking device arranged to lock the translational motion of the drum during the synchronization and gear engagement phases and to unlock the translational motion of the drum upon completion of the engagement of the gear.

Abstract: The electric actuator, for the control of the clutch and/or sequential gearbox in motor vehicles, includes an electric motor and a mechanism for transforming rotary motion into linear motion of the actuator element, and has a thrust crank or at least one cam that performs a complete rotation returning to its starting position, whether it be the control for the clutch, the gearbox, or both. The cam is advantageously made in the form of a template, fashioned in a plate sliding in a guide, in which a crank stud is positioned rotating with the action of the electric motor. Combined, compact embodiments of the two actuators for the clutch and sequential gearbox are included, as well as: mechanical disconnecting safety mechanisms for operation of the gearbox lever.

Abstract: The electric actuator, for the control of the clutch and/or sequential gearbox in motor vehicles, comprises an electric motor and a mechanism for transforming rotary motion into linear motion of the actuator element, and has a thrust crank or at least one cam that performs a complete rotation returning to its starting position, whether it be the control for the clutch, the gearbox, or both. The cam is advantageously made in the form of a template, fashioned in a plate sliding in a guide, in which a crank stud is positioned rotating with the action of the said electric motor. Combined, compact embodiments of the two actuators for the clutch and sequential gearbox are comprised, as well as: mechanical disconnecting safety mechanisms for operation of the gearbox lever.

Abstract: A device for the sequential control of a gearbox with hand-operated selection and engagement of gears for motor vehicles, the gearbox including a plurality of forks (1) for actuating corresponding groups of gearwheels, comprises: a rotatable drum (11) equipped with one cam groove (12); a plurality of studs (13) engaging in the cam groove (12) for being moved parallel to the axis of the drum (11); an angle selector (15, 16) for controlling rotation of the drum (11); actuating members (2, 3, 4, 7, 9) each connecting a stud (13) to a respective fork (1) so as to cause each fork to translate axially fast with the respective stud (13). The actuating members comprise first (3, 4) and second (7, 9) axially mobile elements, wherein each first mobile element is fast for translation with a rod (2) connected to a respective fork (1) and each second mobile element is fast for translation with a respective stud (13) and a respective first mobile element.

Abstract: A reciprocating internal combustion engine with balancing and pre-compression is provided. The internal combustion engine comprises: at least one active cylinder, at least one auxiliary cylinder positioned at right-angles to the active cylinder, the throw of the pistons of the relative cylinders positioned on the same drive shaft, and fuel supply parts. Further, the internal combustion engine comprises the auxiliary cylinder equipped with cylinder head with a one-way valve for air inlet and a one-way valve for air outlet. Additionally, the cylinder head of the active cylinder has at least one outlet valve and at least one opening for the inlet of the air into the active cylinder. Finally, the phase of the piston of the auxiliary cylinder precedes the phase of the piston of the active cylinder by 90 degrees. The description includes two-cylinder versions, two-and four stroke, for petrol and diesel cycles, as well as multi-cylinder and turbocharged versions.

Abstract: A device for the sequential control of a gearbox with hand-operated selection and engagement of gears for motor vehicles, the gearbox including a plurality of forks (1) for actuating corresponding groups of gearwheels, comprises: a rotatable drum (11) equipped with one cam groove (12); a plurality of studs (13) engaging in the cam groove (12) for being moved parallel to the axis of the drum (11); an angle selector (15, 16) for controlling rotation of the drum (11); actuating members (2, 3, 4, 7, 9) each connecting a stud (13) to a respective fork (1) so as to cause each fork to translate axially fast with the respective stud (13). The actuating members comprise first (3, 4) and second (7, 9) axially mobile elements, wherein each first mobile element is fast for translation with a rod (2) connected to a respective fork (1) and each second mobile element is fast for translation with a respective stud (13) and a respective first mobile element.

Abstract: The automatic servo-mechanism for sequential gearbox and clutch, which is fitted or which can be fitted to a motorised vehicle, comprises: a sequential gearbox, a hydraulic circuit (1) and an actuator (11) that controls the clutch, which actuator is actuated by a solenoid valve (10), characterized therein that it consists of: a selector (15) that regulates the analog electric signal that controls the solenoid valve (10), a microswitch (16) on the lever that actuates the clutch mechanically; the hydraulic circuit also contains at least one check valve (6) downstream of the pump (3); at least one pneumatic-hydraulic accumulator (7), connected downstream of the aforementioned check valve; the aforementioned proportional solenoid valve (10) that regulates the pressure in the controlled section (33) this is connected to the aforementioned actuator (11) according to the analog signal received.

Abstract: A reciprocating internal combustion engine with balancing and pre-compression is provided. The internal combustion engine comprises: at least one active cylinder, at least one auxiliary cylinder positioned at right-angles to the active cylinder, the throw of the pistons of the relative cylinders positioned on the same drive shaft, and fuel supply parts. Further, the internal combustion engine comprises the auxiliary cylinder equipped with cylinder head with a one-way valve for air inlet and a one-way valve for air outlet. Additionally, the cylinder head of the active cylinder has at least one outlet valve and at least one opening for the inlet of the air into the active cylinder. Finally, the phase of the piston of the auxiliary cylinder precedes the phase of the piston of the active cylinder by 90 degrees. The description includes two-cylinder versions, two-and four stroke, for petrol and diesel cycles, as well as multi-cylinder and turbocharged versions.

Abstract: The electric actuator, for the control of the clutch and/or sequential gearbox in motor vehicles, comprises an electric motor (11) and a mechanism (9, 10, 31, 32) for transforming rotary motion into linear motion of the actuator element (2, 22, 33, 52, 67), and has a thrust crank or at least one cam (9, 29, 50) that performs a complete rotation returning to its starting position, whether it be the control for the clutch (1, 48), the gearbox (27, 47), or both. Also, the said cam is advantageously made in the form of a template (9, 29, 50), fashioned in a plate (8, 21, 28, 49, 68) sliding in a guide (14, 30, 69), in which a crank stud (10) is positioned rotating with the action of the said electric motor (11, 45). The said template (9) for operating the clutch being advantageously shaped in accordance with the specific requirements of the application (R, D, F, I) to optimise the loads.