Valeo Equipements Electriques Moteur

Guy Faucon

Christian Mornieux

Gilles Vadin-Michaud

Gérard Vilou

Chantal Bocquet

The invention relates mainly to an assembly comprising: &#x2014;a combustion engine ring gear having a plurality of teeth, the said ring gear being defined by a modulus and a pressure angle, &#x2014;a starter comprising a pinion () able to engage with the said ring gear of the said combustion engine, the said pinion () having a plurality of teeth () is defined by a modulus (Mp) and a pressure angle (alpha_p), characterized in that a pinion product which is the product of the modulus (Mp) of the said pinion () and the cosine of the pressure angle (alpha_p) of the said pinion () is greater than a ring-gear product equal to the product of the modulus of the said ring gear and the cosine of the pressure angle of the said ring gear.

Motor vehicle starter pinion with improved acoustic performance

Motor vehicle starter comprising a starter head provided with a pinion (), a driver () and a coupling device with a conical clutch for coupling the pinion to the driver (), in which the conical clutch comprises a first frustoconical friction surface () fixed to the pinion and a second frustoconical friction surface (') with a shape complementary to the first surface () and fixed to the driver and in which the coupling device comprises on the one hand a hollow-shaped coupling piece having. a bottom extended by an annular skirt directed axially towards one of the elements consisting of pinion and driver and on the other hand axially acting elastic means () bearing on a first stop fixed to the coupling piece for acting on a second stop fixed to one of the elements consisting of pinion and driver. The elastic means comprise axially deformable tongues () and extend circumferentially.

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Creteil, France

Guy Faucon