Abstract:
A thermostatic valve for an internal combustion engine liquid coolant circuit comprising a housing (1) with a channel (3) extending therein between an inlet connectable to the outlet of the engine water chamber, and an outlet connectable to the main engine radiator. The channel (3) is provided with a thermostatic control device (5) controlling the flow of liquid, and a degassing branch (8) communicating with the channel downstream from the thermostatic device (5), relative to the liquid flow direction. The inlet (10) of the degassing branch (8) coacts with liquid pressurising means (12) to prevent air being sucked back out through said degassing branch (8).
Abstract:
Locking device for a pivoting glass pane in closed or half closed position. This device comprises a rod (4) hinged, on the one hand, slidingly in a control handle or lever (1) pivoting on a support (2) and, on the other hand, to a strap (6) mounted with some degree of rotation in a based plate (8) fixed to the glass pane (9), and locking/ unlocking means for the lever in a closed or half closed position of the glass pane (9). Application to padded side panels of motorcars.
Abstract:
The invention concerns a method and a system for charging a battery with storage cell modules (M1-M20). The invention is characterised in that it consists in defining in the battery groups (G1-G5) of storage cell modules, and in breaking down at least one charging phase of the battery into a plurality of successive and recurrent microcycles for charging each group of the storage cell modules. The invention enables to charge the battery with a strong current while maintaining a charging power compatible with the domestic electric system. It is particularly applicable for producing an on-board charging system in electric motor vehicles.
Abstract:
Disclosed is a control hydraulic cylinder control for an automatic transmission actuator (6), comprised of a first piston (3) which moves a push rod (4) towards said actuator (6), against a first spring (16). A second piston (9) moves against a second spring (17), thereby absorbing a portion of the oil flow. The invention is characterized by the action of the second piston (9), which acts only on the second spring (17) for the first part of its stroke, and acts in conjunction with the first piston (3) on the first spring (16) for the second part of its stroke.
Abstract:
The invention concerns a braking system for an electric vehicle, characterised in that it consists in the following steps: detecting a raised position of the accelerator pedal (2); detecting the value of the stoplight indicator, representing the actuating or not of the brake pedal (3); measuring the moving speed of the vehicle and computing the deceleration of the vehicle on the basis of this speed; computing a first component of the braking torque value, in inverse variation to the speed of the vehicle; computing a second component, proportional to the deceleration of the vehicle, of the braking torque value; computing a braking torque value, which is a linear function of the two previous components; modifying the torque reference input value of the electric motor by this computed braking value for braking.
Abstract:
The invention concerns a device for immobilising the accelerator pedal (1) in an inoperative position where the control member for the intake of gas (2) is placed directly under the control of a computer (3) of a driving assistance system on board a vehicle, characterised in that it comprises a mobile element (4) connected to the pedal (1), which is displaced by the latter between a first position immobilising the pedal in its inoperative position which is maintained as long as the thrust of the driver on the pedal remains less than a predetermined threshold pressure, and a second position for cutting out the driving assistance system where the pedal does not offer any particular resistance, which is reached when said pressure threshold is exceeded, and maintained as long as the driving assistance system remains cut out.
Abstract:
The invention concerns a method for controlling the passage of an automatic gearbox to a reduced gear ratio using the accelerator pedal (1) of a vehicle, characterised in that it relies on the simultaneous exploitation of a first information linked to the position of the pedal, and a second information linked to the speed of its depression by the driver.
Abstract:
The invention concerns a method for producing a synchronising signal for the electronic control system of an internal combustion engine, characterised in that it comprises the following steps: a) working out a synchronising signal in phase with a signal locating the passage of the pistons in a predetermined position, said synchronising signal being arbitrarily initialised; b) monitoring the operation of the engine when the predetermined conditions are fulfilled; c) modifying the control parameters of the engine for at least two given cylinders of which the operating cycles are out-of-phase by two working strokes; d) computing for the cylinders concerned an algebraic quantity representing the variations in combustion levels; e) deducing from this algebraic quantity the exactitude of the synchronising signal and correcting it if the arbitrary initialisation turns out to be erroneous.
Abstract:
The invention concerns a radio frequency heating device comprising an electric potential generator and an applicator provided with two electrodes (1, 2) connected to the generator, for applying to a piece (3) to be heated an electric field generated by said electric potential. The device comprises means for adapting the voltage applied to a given part of the piece (3) to the geometric co-ordinates of said part of the piece (3) to be heated.
Abstract:
The invention concerns a method for locating a vehicle comprising a positioning system (1), for instance a GPS receiver, characterised in that it consists in: recording, on first memorising means (4) mounted in the vehicle, a series of positions supplied by the positioning means (1), working out a trajectory on the basis of said positions, comparing the trajectory obtained with the portions of the neighbouring roads previously stored in second memorising means (11), for determining the road where the vehicle is located.