Abstract: The invention relates to a self-positioning device for safety belts of the passive type, capable of shifting a movable point of positioning of the same belt, to the purpose of fastening and of releasing the occupant of the seat, by means of the door's shutting and opening stroke, of the type comprising a rack rod of curved shape, rigidly fastened at one of its ends on to the car's body, and a pinion inmeshing with it, rotatably supported by the door and operatively linked to an amplifier mechanism in its turn operatively linked to the belt and capable of transforming the rotary movement of the pinion into an amplified movement of rectilinear type of the same positioning point along a guide diagonally positioned on the door, the rock rod being an anular sector and being partly toothed, so as to operate over a portion of the door's shutting and opening stroke only.

Abstract: In a device for manually controlling a motor vehicle change-speed gear unit, the gear lever is connected to the gear selector and engagement shaft by two motion transmission linkages, one for controlling its rotary movements for gear selection, and the other for controlling its translational movements for gear engagement.

Abstract: The pressure regulator comprises a valving element caused to open or close a bleed port of the petrol circuit, and a diaphragm subjected to the pressure of said petrol and to a pressure which is a function of the engine intake pressure, said diaphragm being balanced by a force due to the action of an aneroid capsule also subjected to said pressure which is a function of the intake pressure.

Abstract: This invention provides a system for the flexible composition of laser beams, in which several beams of substantially annular cross-section can be fed to a composition unit which combines them by causing them to propagate one within the other in such a manner that the cross-section of the composite beam is constituted by the cross-sections of the component beams.

Abstract: The invention relates to an oscillation-damping device for a motor vehicle; the device is constituted by cylinders and pistons, of which the upper and lower variable volume chambers are filled with a fluid and are interconnected by means of a system of conduits provided with damping constrictions having a cross-section which varies with the fluid passage velocity, some being capable of a symmetrical damping action in the two flow directions, while others are capable of a differential damping action in the two flow directions.

Abstract: The invention relates to an ignition control device of the microcomputer type in which a programmed microprocessor calculates the non-conduction time of the coil in order to attain a desired time for which the coil remains at maximum charge, and also calculates the time corresponding to the end of coil charge as a function of the spark advance suitable for the various engine operating conditions; the microprocessor also causes activation of the ignition coil, whereas the deactivation of the coil is controlled by a timer which counts the time corresponding to the end of coil charge on receiving reference pulses.

Abstract: The invention relates to an injection control device for an internal combustion engine, in which a programmed microprocessor calculates the open time of a plurality of electrically operated injectors as a function of prechosen engine parameters, and determines the activation of said injectors into their open state and their deactivation into their closed state with the aid of a single timer, which counts-out the calculated open time. If a second injector is opened while a first injector is still delivering the fuel, the microprocessor calculates the difference between the open time of the second injector and the remaining open time of the first injector, so as to be able to count-out the open time of the two injectors on the single timer.

Abstract: An electrically operated injector provided with a mobile cup-shaped armature which acts as the closure element for the injection nozzle and is guided internally by a tubular element which also acts as a stop for the armature lifting stroke. The armature also has a base wall provided with bores with skew-inclined axes for feeding fuel to the injection nozzle.

Abstract: An automatic positioning device for a passive safety belt able to move a mobile positioning point for the belt in order to retain and release the seat occupant by opening and closing the door, comprising a rack bar of arcuate shape rigidly fixed at one end to the vehicle body, and a pinion engaging therewith which is rotatably supported by the door and operationally connected to an amplifier mechanism which is itself operationally connected to the belt and is able to convert the rotary movement of the pinion into an amplified rectilinear movement of said positioning point along a rail disposed diagonally on the door.

Abstract: This invention relates to a temperature-controlling system for the liquid coolant of an internal-combustion engine, which provides three sensing members for the temperature of said liquid in the outlet conduit from the cylinder block. Said sensors are intended to drive a valve which controls the flow of the liquid through a conduit which by-passes the radiator, a vane which controls the flow of air through a port formed through the car body, and a fan which cools said radiator respectively.

Abstract: The invention relates to an improvement in internal combustion engines equipped with a compressor for the feeding air, according to which the intake duct is equipped with a heat-exchanging element for cooling the air when the latter is compressed to a comparatively high pressure.

Abstract: This invention relates to a device for automatically varying the timing of a camshaft relative to the drive shaft of an internal combustion engine, comprising an axially slidable splined sleeve which connects the camshaft to its drive pulley, and is operated by the engine lubricating oil in such a manner as to change the angular position of said camshaft by way of valve means controlled by an electromagnetic actuator as a function of at least one engine parameter.

Abstract: In a multi-cylinder engine provided with several intake valves per cylinder and with the relative intake ducts, non-return valve means are provided in one of the intake ducts of each cylinder, in series with the respective intake valve.

Abstract: This invention relates to a diesel engine with an effective compression ratio substantially equal to the geometrical compression ratio, the individual intake ducts of said engine being fitted with automatic non-return valves arranged to prevent air flowing to the outside, and disposed immediately upstream of and in series with the normal intake valves.

Abstract: This invention relates to a petrol injector protection sheath constructed of thermally insulating material such as rubber, for preventing overheating of said injector.

Abstract: The invention relates to a mechanical arm having four degrees of freedom (or possibilities of motion) and actuated by two electric motors, each motor of these alternately controls the movements corresponding to at least two degrees of freedom. The result is an arm having a mixed control for movement in series and in parallel in which the motions controlled by the same motor are carried out in different instants of time, whereas the motions controlled by different motors can be performed simultaneously.

Abstract: A control device for the fuel feed actuators of an internal combustion engine comprises a detector for detecting a first engine parameter (e.g. engine RPM), another detector for detecting another engine parameter (e.g. throttle angle), a further detector for detecting the operative condition of the engine (e.g. the temperature of the coolant), a pulse generator connected to the engine shaft, another pulse generator connected to an auxiliary shaft, a processor (CPU), a read only memory unit (ROM), a random access memory unit (RAM), two timers, the processor unit (CPU) performing a sequence of programmed steps in order to select which of the electric fuel injectors must be actuated, at what instant of time, for what time period and with what quantity of fuel each time.

Abstract: The invention relates to a multi-cylinder Otto cycle internal combustion engine for motor vehicles, arranged to operate with a number of working cylinders which varies with the power delivered by the engine. The working cylinders which deliver the complementary portion of the maximum power have a compression ratio which is less than that of the remaining group of cylinders.