Borgwarner Inc.

Gérard Desaint

Jean-Louis Magnaval

Jean Armiroli

Pascal Audineau

Gillian Escandell

Gérard Garcia

Bruno Lhermitte

The pressure controlling electromagnetic valve comprises an electric sub-assembly () provided with a coil () and the yoke thereof () associated with a hydraulic sub-assembly () provided with a seat (), which a conduit () connecting two high and low-pressure fluid circuits (), respectively, passes through, sealing means () of said conduit (), a pusher () sliding in a pole piece () and actuating said sealing means (), a movable core () which is connected to the pusher () and whose displacement is controlled by the coil (), wherein said electric () and hydraulic () sub-assembly form two distinct unit blocks. Said blocks are rotatably mounted with respect to each other by assembling the hydraulic block () in the conduit, which passes through the electromagnetic block (), a locking washer () is arranged on an end of the conduit for preventing any axial displacement of the hydraulic block () in one direction and a shoulder () is arranged on the other end of said conduit for preventing the displacement of said hydraulic bloc () in the other direction by contacting the limit stop () thereof and a elastic washer () is inserted between the shoulder () and the limit stop ().

Pressure-controlling electromagnetic valve for distinct electromagnetic and hydraulic units

The invention concerns a device for connecting a mechanical, hydraulic and electric connector () equipping a heat engine fuel injector to the electromagnet driving the injector, said connector () being fixed to a body () enclosing the electromagnet and comprising two electric terminals () connected to the solenoid (S) of the electromagnet. Said electric terminals () are provided each with a pin () designed so that when the connector () is assembled to the body (), each pin () co-operates with guide means () contacting an end portion of the wire () of the solenoid (), the assembling operation resulting in pulling off the insulation in at least one location of said end portion to set up an electrical connection between each terminal () and the solenoid ().

Device for connecting a connector to a solenoid driving an injector

The inventive discharge rate and pressure control solenoid valve () is used for a circuit consisting of a low pressure part and a high-pressure part and controls the discharge rate of a low-pressure fluid with the aid of a sliding spool () in a liner () provided with at least one fluid feeding orifice () and one fluid exhausting orifice () respectively. Said spool () is electrically actuated by means of an electromagnet acting in an opposite direction to recoil means () for closing the passage between the feeding () and exhausting () orifices when a control current for the electromagnet is equal to zero and for gradually opening said passage according to a threshold value of the flow, the pressure control being applicable to a high-pressure fluid. The recoil means () are inserted between the spool () and a flap device which closes an inlet orifice in the liner () of a high pressure fluid and is connected to the low-pressure fluid feeding orifice at least at a slide position corresponding to the control current when it is less than said threshold value. The recoil means () are positioned and dimensioned in such a way that the flap is openable when the current is equal to or near zero in order to drop the pressure in the high pressure circuit.

Growing community of inventors

Carqueiranne, France

Gérard Desaint