SOUPAPE ACTIONNEE ELECTROMAGNETIQUEMENT

A.SOUPAPE ELECTROMAGNETIQUE, NOTAMMENT SOUPAPE D'INJECTION DE CARBURANT POUR DES INSTALLATIONS D'INJECTION DE CARBURANT DE MOTEURS A COMBUSTION INTERNE, AVEC UN BOITIER DE SOUPAPE ET UN NOYAU EN MATERIAU FERROMAGNETIQUE, ET AVEC UNE ARMATURE ACTIONNANT UN CORPS OBTURATEUR DE SOUPAPE COOPERANT AVEC UN SIEGE DE SOUPAPE FIXE, ARMATURE QUI, LORSQUE LA BOBINE MAGNETIQUE EST EXCITEE, EST ATTIREE CONTRE UNE SURFACE DE BUTEE.B.SOUPAPE CARACTERISEE EN CE QUE L'ARMATURE 35 ET LES SURFACES DE BUTEE 18 SONT MUNIES DE REVETEMENTS DE SURFACE 56, 57 RESISTANT A L'USURE.C.SOUPAPE DE COMBUSTION ECONOMIQUE ET RESISTANT A L'USURE APPLICABLE A DES INSTALLATIONS D'INJECTION DE CARBURANT. An electromagnetically actuatable valve which serves to control a flow of fluid. The valve includes a valve housing and a core of ferromagnetic material, as well as an armature which actuates a valve element cooperating with a fixed valve seat. When the magnetic coil is excited, the armature is attracted toward a stop face on the valve housing and is in contact there with an effective zone on the armature. The armature and the valve housing are formed of low-carbon steel, and both the stop face and at least the outer effective zone of the armature are provided with wear-resistant surfaces. The wear-resistant surfaces may be attained by nickel plating or by nitration.