Abstract: A rear axle for motor vehicle, which comprises a rigid axle member pivotally mounted at its ends to the relevant stub-axle brackets by substantially horizontal pivot pins parallel to the longitudinal axis of the vehicle, the stub-axle brackets being on the other hand secured to the body of the vehicle by longitudinal tie-rods, one of the longitudinal tie-rods being further connected in the vicinity of its relevant bracket to an oblique tie-rod having its opposite end also secured to the body, each bracket being also secured to a vertical shock absorber surrounded by a coil compression spring.

Abstract: An electronic ignition control system for internal combustion engine, notably for motor vehicles, which comprises a rotary member revolving at the engine velocity and provided with at least two reference marks of which the positions correspond to the maximum ignition advance angle and to the minimum ignition advance angle, respectively, said reference marks defining at least one area on said rotary member, a sensor disposed in close vicinity of said rotary member so as to detect the moments of passage of said reference marks and at least one up-and-down counter for counting pulses, said rotary member further comprising a third reference mark separate from the first two reference marks aforesaid so as to define two successive areas (A = 12, 13; B = 13, 14) scanned in succession by said sensor, while a first up-and-down counter positively counts the pulses from a first clock system during the passage of said first area (A) and negatively counts, during the passage of the second area (B), the pulses from a secon

Abstract: The invention relates to an automatic change-speed transmission mechanism, notably for motor vehicles, of the type providing the forward speeds and a reverse transmission ratio, of the type comprising two clutches and an idle pinion mounted on the output shaft and formed with an axially-extending integral hub constituting the hub of a second clutch. The housing of the first clutch is adjacent to the side face of said idle pinion, to the side face of the hub of said second clutch and to the housing of the second clutch.

Abstract: A. Charging an oleopneumatic accumulator with energy.B. Automatic charging of the oleopneumatic accumulator (1) by the intermediary of the heat engine (101) driving the hydraulic pump with variable displacement (104), whose displacement is altered with the aid of a jack (122) supplied by a three-position valve (120), provided with two control coils (120a and 120b). A logic block (70) is connected to a sensor (5) of the accumulator pressure, to a speed sensor (11) of the rotation of the engine, and to a sensor (25) of the displacement of the pump (104) and produces control signals for the two coils (120a and 120b) and for a discharge electrovalve (121).C. Used for hybrid vehicles or for storing energy in oleopneumatic form.

Abstract: An electro-pneumatic device for regulating the supply of air to an internal combustion engine having a carburettor is arranged to supply the air to the engine into a manifold downstream of the carburettor and the air supply is controlled to adjust the richness of the main stream of air and fuel entering the engine to control the richness of the combustible mixture. The device includes a pneumatic regulator valve having two stages in series with each other and the opening and closing of this valve is controlled, to adjust the rate of air supply, by a command pressure produced by connecting the valve alternately to a source of the mixture delivery pressure from the carburettor and a source of higher pressure. This alternate connection is effected by an electrically-operated valve actuated by a signal of square wave form, the frequency of which is a function of engine speed and of a signal delivered by a sensor which senses the composition of the exhaust gases from the engine.

Abstract: Device for ejecting and retaining the bonnet of a motor vehicle when opening said bonnet, which comprises an ejection spring and a hook adapted to retain the bonnet in its ejected position, said device consisting of a spring assembly comprising a portion adapted to be fastened and, adjacent thereto, a spring arm constituting the ejection member and another spring arm constituting the retaining hook, said other spring arm being provided with a control lug.

Abstract: This invention relates to a method and device for recirculating the exhaust gases of internal combustion engines, utilizing means for injecting said gases into the engine induction manifold while mixing them with an adjustable-output induction air circulation controlling indirectly the metering of the amount of recycled gases. A recirculation conduit connects one portion of the exhaust system to one portion of the induction manifold and connected to said recirculation conduit upstream of its junction with the induction manifold, an induction air pipe line incorporating an air output adjustment valve the opening of which is controlled as a function of the desired metered amount of recycled gases.

Abstract: In a computer for calculating the optimum mixture of combustion agent and fuel for an internal combustion engine, of the type comprising a monostable univibrator operating in synchronism with the rotational velocity of the engine and generating electric pulses of a width subordinate to the value of the voltage measured by a probe for making the chemical analysis of the gases in the exhaust manifold, the thus measured voltage being processed in a regulator provided with an intermediate integrator, said electric pulses being utilized for determining the opening time of a solenoid valve controlling the output of a fluid, whether combustion agent or fuel, of which the metering is measured by said probe, provision is made of a bistable univibrator coupled at one end to the output of a first comparator having one input connected to said chemical analysis probe via an integration type regulating circuit, said univibrator being connected at its other input to a pulse generator opening in synchronism with the rotation

Abstract: Enriching device for carburettors of internal combustion engines, which comprises an aeration gaged orifice located at the upper portion of the float tank of the carburettor, a fuel gaged orifice communicating with the bottom of said fuel tank, an air/fuel mixture gaged orifice disposed in a passage interconnecting said aeration gaged orifice and said fuel gaged orifice, and delivering said mixture at the level of the carburettor venturi, and an additional gaged orifice opening into the main passage of the carburettor, wherein said additional gaged orifice is located at the end of a pipe section projecting to a predetermined extent into the main passage upstream of said venturi and slightly upstream of the closed position of the starter shutter, whereby said additional gaged orifice, according to the negative pressure discrepancy existing between its position and that of the mixture gaged orifice will regulate the richness of the air/fuel mixture by performing successively as an additional air inlet orifice f

Abstract: The emission of atmospheric pollutants in the exhaust gases of an internal combustion engine having a carburettor is reduced by regulating the composition of the inlet gases, and hence the exhaust gases, of the engine by means of a control device comprising an extra air duct, which has a control valve and bypasses the carburetor, for supplying extra air to the engine inlet, a recirculating duct for recirculating exhaust gases to the engine inlet, a controller which is responsive to signals from an exhaust gas composition sensor installed in the exhaust outlet of the engine and which controls an electrically operated valve in the recirculating duct, and a pressure-sensitive device which communicates with the recirculating duct upstream of the electrically operated valve and which actuates the extra air control valve to regulate the supply of extra air to the engine through the extra air duct.

Abstract: A device for metering the flow of two fluids, such as the flow of liquid fluid and air to an internal combustion engine, includes a respective duct for each of the two fluids, an ionic flow meter in each of the two ducts, a valve controlling the flow of one of the fluids through its duct and circuitry comparing the flow rates measured by the ionic flow meters and controlling the valve accordingly so as to maintain a desired ratio between the two flow rates.

Abstract: An indirect injection fuel feed system for an internal combustion engine, in which the engine air is supplied by a unit comprising a throttle butterfly body having at least two bosses one of which is fed with engine coolant, the bosses having bores to receive, respectively, a fuel pressure regulator; a decelerating air bypass; a cold start injector; an anti-overchoking thermostat, a thermostat for measuring engine coolant temperature; and a cold start injector air bypass.

Abstract: The operation of each electromagnetic fuel injector of an internal combustion engine is controlled so that when an energizing current is caused to flow from the battery of the engine through the coil of the fuel injector, the time taken for the current to reach its full value is controlled electronically so that it is a constant irrespective of the battery voltage but no shorter than would naturally result if the battery were to deliver its predicted lowest voltage directly to the coil, the necessary control being obtained by generating a constant electric current and using it to charge a capacitor to a predetermined voltage, comparing the voltage of the capacitor with a voltage which is proportional to the energizing current flowing through the coil, and controlling the build up time of the energizing current so that it is equal to the time taken to charge the capacitor, this being constant.

Abstract: This door handle for automotive vehicle comprises a casing fitting in the door panel structure and an opening tongue pivotally mounted within said casing.

Abstract: Automatically controlling the transmission ratios of an automotive vehicle engine by detecting the speed of the engine, generating a signal proportional to the detected speed and comparing this signal with different predetermined reference speed signals, detecting the transmission ratio of the transmission, comparing this ratio with a predetermined reference ratio and generating a ratio signal as long as the detected ratio remains below the reference ratio, maintaining the detected ratio constant until the detected engine speed signal falls below the predetermined reference speed signal and generating a signal to increase the transmission ratio when the engine speed signal falls below the predetermined reference speed signal, and increasing the transmission ratio in the direction of the reference ratio as long as the detected speed signal remains below the predetermined reference speed signal and the detected ratio is less than the reference ratio.

Abstract: A catalytic reactor for the anti-pollution exhaust of internal combustion engines comprising a central case containing the catalytic elements and a pair of end shaped necks for connecting the assembly to the exhaust piping system.The shaped necks comprise at least one rounded marginal portion of which the outer edge is connected tangentially, in edge to edge relationship, to the corresponding marginal portion of the central case possibly extended beyond said catalytic elements.