Valeo Equipements Electriques Moteur

Valeo Equipments Electriques Moteur

Valeo Equipements Electronics Moteur

Gerard Vilou

Rene Jacquet

Bruno Lefebvre

In a method of controlling energisation of the coil of a motor vehicle starter contactor the coil is energised in a pick-up mode to close the contactor and then in a latching mode to hold the contactor closed. A voltage corresponding to the supply voltage of the electric motor of the starter is measured, a drop in this voltage corresponding to the closing of the contactor is detected, and the coil of the contactor is energised in latching mode after a predetermined time-delay from detection of the voltage drop.

Method and device for controlling energization of the coil of a motor vehicle starter contactor

A controller for a vehicle starter motor, the controller comprising means for applying power to the electric starter motor as a function in particular of the open or closed state of a starter switch, wherein said means include in particular an RC type circuit having a charging time constant that is shorter than its discharging time constant and that charges and discharges depending on whether the starter switch is closed or open, said control means also including means for preventing power being applied to the starter motor when the voltage across the terminals of the capacitor means of the RC circuit exceeds a given threshold.

Controller for a vehicle starter motor

A motor vehicle starter has a contactor of the type that includes an electronic control circuit, which includes a printed circuit board in the form of a disc with a central hole through which the body of the control rod of the contactor passes. The electronic components of the control circuit are carried by the circuit board, which is located in an axial position within the interior of the pot-shaped end cap of the contactor, between the fixed core and the movable contact of the contactor. The electronic control circuit is mounted within a protective housing which is arranged inside the end cap, between the fixed core and the movable contact, and this housing also has electrical connection facilities.

Starter contactor incorporating an electronic control circuit, and a

A device for controlling an automobile vehicle starter motor contactor including a power contact controlling the supply of power to the electric motor of the starter motor and at least one coil controlling the movement of said contact, said device including a unit for controlling the starter motor and a transistor controlled by said unit that controls the energizing of the coil(s) of the contactor, wherein the control unit includes means for turning off the transistor if, between two successive times following closing of the starter switch, the voltage drop at a point connected to receive the battery voltage is smaller than a given threshold.

Devices for controlling an automobile vehicle starter motor contactor

A device for controlling an automobile vehicle starter motor contactor having a power contact controlling the supply of power to the electric motor of the starter motor and at least one coil controlling the movement of said contact, one of the coils of said contactor being connected between the power supply terminal at the battery voltage and the electric motor, said device including a control unit for the starter motor and a transistor controlled by said unit that controls the supply of power to the coil or coils of the contactor, wherein the control unit includes means for turning off the transistor if the voltage at a given point between the coil and the motor is not greater than a predetermined threshold at the end of a predetermined time period from the starter switch of the vehicle closing.

Device for controlling an automobile vehicle starter motor contactor

Interruption of the power supply to a motor vehicle starter, so as to cut off the starter, is controlled automatically by detecting the fluctuations in the power supply voltage of the starter, and by then interrupting the power supply when these fluctuations disappear. For each new fluctuation in the power supply voltage, a monitoring period is generated. The duration of this monitoring period is such that the latter terminates substantially after the occurrence of a peak in the fluctuation, and the power supply is interrupted when no peak has been detected in the last monitoring period.

Method and device for controlling the cut-off of a motor vehicle starter

A starter for a motor vehicle internal combustion engine includes an electronic means for controlling cut off of the starter, whereby fluctuations are detected in the signal which correspond to the voltage or current of the starter, the power supply to the starter being interrupted when these fluctuations disappear. The automatic cut-off method includes determining, in the signal, successive periods during which the voltage is constantly increasing, the starter being cut off when one of these periods becomes greater than a given threshold. This threshold is given distinct values, firstly during an inspection time period which begins on closing of the starter contactor, and secondly, after the inspection time period. The duration of the inspection time period is chosen so as to be long enough to include the case in which the first and second fluctuations at the start of the compression strokes of the engines are substantially coincident with each other.

Methods and apparatus for controlling cut-off of a motor vehicle starter

A motor vehicle starter is cut out automatically as soon as the engine is running by itself. The cut-out is controlled by a method in which the starter supply voltage is measured and the starter is cut out when this voltage reaches a threshold value. On closing of the ignition switch, but before any power is supplied to the starter, the starter supply voltage is measured for several values of current in at least one circuit in the wiring network of the vehicle connected to the vehicle battery. The value of the threshold voltage is then calculated from these measurements, as a function of parameters that characterize the electrical circuitry of the vehicle at the time of starting the engine, at least one of these parameters being capable of being determined from the current measurements.

Methods and systems for controlling the automatic cut-off of a motor

A motor vehicle starter contactor includes a fixed core and a control rod for displacing a movable contact into and out of cooperation with fixed contact terminals carried on the base of a cover hood of the contactor. The contactor also has an electronic control circuit, the components of which are carried by a printed circuit board in the form of a disc, which is located within the cover hood of the contactor, in an axial position intermediate between the fixed core and the movable contact. The printed circuit board is fixed on a support which is carried by the fixed core. The support provides, in particular, electrical ground connection between the printed circuit and the fixed core.

Starter contactor having an electronic control circuit, and a vehicle

A motor vehicle starter is controlled by a control device which cuts off the starter by measuring the power supply voltage of the starter and interrupting the power supply when that voltage reaches a threshold value. The threshold value is a function of the value of the power supply voltage measured at the inception of the starting operation.

Method and device for controlling cut-off of a motor vehicle starter

Starting power supply to starter windings is interrupted whenever a power contact for the starter is still open after a predetermined time delay from initiation of the power supply to the starter. The invention also provides apparatus for controlling a contactor of a motor vehicle starter, said contactor including at least one winding and a power contact which, on being closed, serves to supply power to the starter, the apparatus including circuitry detecting the open or closed state of the power contact and for interrupting or reducing starting power supply to the winding(s) in the event the power contact is still open at the end of a predetermined time delay from initiation of power supply to the starter.

Method and apparatus for controlling a contactor for powering a motor

A motor vehicle starter head includes a starter pinion which slides axially on a starter head shaft, an actuator coupled with the pinion for axial movement with the latter, and abutment means for limiting the travel of the pinion in sliding movement with respect to the starter head shaft, at least towards its working position. The actuator has internal splines cooperating with external splines on the starter head shaft, and the abutment means comprise an abutment member which is coupled for axial movement with the actuator and which cooperates with a transverse flank of the external splines on the shaft.

Starter head and a motor vehicle starter having such a head

A starter for a motor vehicle, of the kind having a contactor provided with a movable contact able to be moved in translation between an idle position, in which the contact bears against a fixed conductive element and towards which it is forced by elastic return means, and an active position in which the movable contact establishes the electrical connection between a current input terminal, and a terminal supplying the starter motor, of the kind in which means are provided which, when the movable contact is in the idle position, enable an electrical contact to be established between the supply terminal and the electrical earth of the vehicle, the movable contact and the supply terminal being connected electrically by elastic return means made of a conductive material.

Starter and contactor therefor

A starter for a motor vehicle engine is equipped with a device for cutting off the operation of the starter as soon as the engine is running by itself. The device detects the voltage or current waves in the power supply to the starter, and stops the starter when these waves disappear. At each new wave in the power supply signal, a monitoring period is generated, having a duration which decreases as the frequency of the waves increases, the starter being stopped when no new wave is detected in the last monitoring period.

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Tassin, France

Gerard Vilou