Regie Nationale Des Usines Renault

Automobiles, Peugeot

Jean-Marie Bouvet

Jackie Lecomte

Claude Edmond Lombard

Claude Chevalier

Jean P Parthuisot

Roger Bariol

Roger Barriol

Ionic air-flow pickup (1) consisting of two working areas (2) and (3) separated by an intermediary grid (4) and associated with devices (5) to power the emission area (2) and devices (8) to detect the signals given off by the receiving area (3) in order to obtain an electrical signal which depends on the volume flow.

Differential type transit-time ionic pickup

An ionic transducer for measuring the transit time of stream of ionized particles produced at an emission station and flowing towards a receiving station, which is used for controlling the richness of the air-fuel mixture fed into an internal combustion engine. At the receiving station is disposed a receiving device including a receiving grid on which a signal is induced upon passage of the ionized stream of particles. The receiving grid is situated between two other grids connected to ground and serving as shielding and airflow stream stabilizer. The several grids are movable and adjustable with respect to the direction of the stream of ionized particles.

Ionic pickup for the transit time between an emission area and a

The control device comprises a moving slide 25 acted on by a return spring 27 and capable of uncovering an orifice 31 allowing hydraulic fluid to be fed to a release chamber 32 moving the control piston 17 removing the 'bridging' between the input impeller 2 and the output turbine 10 of the converter 1. The 'bridging' is actuated by an electrohydraulic transducer 43 controlled by an electronic device 49 in accordance with the input and output speeds sensed by sensors 46 and 48. 'Bridging' of the converter 1 is thus achieved for all the transmission ratios as well as 'debridging' on each change from one ratio to another.

Device controlling the bridging of a hydrodynamic torque converter

A control generator starting from supplied data relative to the functioning of the transmission and of the motor, supplies a transfer voltage proportional to the line pressure. The control comprises a primary electrical loop containing a pressure tap and a secondary hydraulic loop comprising an electro-hydraulic transducer. The line pressure is thus controlled. The stability and control performance of the transmission are improved by means of electrical correction circuits. The apparatus may be adapted to any desired type of automatic transmission.

Pressure control apparatus for the automatic transmission of automotive

Electromagnetic actuator, especially for actuating a hydraulic servo-control valve, which comprises a magnetic shell constituting a body of revolution and a concentric armature-forming permanent magnet, at least one annular field coil, the field coil and the armature being adapted to move axially in relation to each other. The movable member (field coil or armature) is caused to move by the resultant electromagnetic force resulting from the energization of the field coil to which a control direct current is applied and by the antagonistic force of a repulsion member incorporated in the magnetic shell. The field coil is longer than the armature so that the electromagnetic force is independent of the movement of the movable member and proportional to the control direct current. The movable member is caused to perform simultaneously a cyclic motion superposed to the axial movement in order to eliminate the friction hysteresis of the hydraulic valve.

Growing community of inventors

Boulogne-Billancourt, France

Jean-Marie Bouvet