Production method for the rotor component of a position sensor of a butterfly valve for an internal combustion engine
AssigneeMagneti Marelli Powertrain S.p.A.
InventorClaudio Fauni
Life of this patent
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Abstract
A production method for a butterfly valve which comprises a valve seat engaged by a butterfly body keyed on a shaft in order to rotate under the action of an electric actuator coupled to this shaft by means of a geared transmission which ends in a final gear keyed on this shaft, the shaft being coupled to a position sensor provided with a rotor rigid with the shaft and a stator disposed to face the rotor, this method comprising the stages of disposing the shaft and the rotor of the position sensor in a mould, injecting plastic material into this mould in order to fill the mould and producing, by moulding, the butterfly body keyed on the shaft and the final gear keyed on the shaft and incorporating the rotor of the position sensor.
Claims9
A production method for a butterfly valve (1) for an internal combustion engine, this butterfly valve (1) comprising a valve seat (4) engaged by a butterfly body (5) keyed on a shaft (6) in order to rotate between an open position and a closed position under the action of an electric actuator (3) coupled to this shaft (6) by means of a geared transmission (8) which ends in a final gear (18) keyed on the shaft (6), the shaft (6) being coupled to a position sensor (23) provided with a rotor (24) rigid with the shaft (6) and a stator (25) disposed to face the rotor (24), this method being characterised in that it comprises the stages of disposing the shaft (6) and the rotor (24) of the position sensor (23) coaxial with the shaft (6) in a mould (30), injecting plastic material into this mould (30) in order to fill the mould (30) and producing, by moulding, the butterfly body (5) keyed on the shaft (6) and the final gear (18) keyed on the shaft (6) and incorporating the rotor (24) of the position sensor (23).
Dependencies are inferred from the claim text.