The present invention is directed to motor vehicle vacuum pump (10;10'), comprising a pumping unit (24) with a rotatable pump rotor (26), an electronically commutated electric motor (30) for driving the pump rotor (26), and a pump control unit (34;34') for controlling a variable rotational motor speed (MS) of the electric motor (30), the pump control unit (34;34') comprising - a standard -operation control module (40;44) which is configured to determine a standard-operation speed value (SO), and to set the variable rotational motor speed (MS) corresponding to the standard-operation speed value (SO), and - a noise reduction control module (42;44) which is configured to monitor the standard-operation speed value (SO), and to overrule the standard-operation control module (40;44) if the standard-operation speed value (SO) is within a noise-critical speed band (CB1,CB2), in that way that the variable rotational motor speed (MS) is set corresponding to a noise-optimized speed value (N01,N02) which is outside of the noise-critical speed band (CB1,CB2) in this case. The standard-operation control module (40;44) provides a reliable and efficient pump operation, wherein the noise reduction control module (42;44) according to the present invention reliably avoids that the electric motor (30) is operated with a noise-critical rotational motor speed. This provides an efficient and low-noise motor vehicle vacuum pump (10;10')·
MOTOR VEHICLE VACUUM PUMP AND METHOD FOR CONTROLLING A MOTOR VEHICLE VACUUM PUMP
KRAFTFAHRZEUG-VAKUUMPUMPE UND VERFAHREN ZUM STEUERN EINER KRAFTFAHRZEUG-VAKUUMPUMPE
POMPE À VIDE DE VÉHICULE À MOTEUR ET PROCÉDÉ DE COMMANDE D'UNE POMPE À VIDE DE VÉHICULE À MOTEUR
2024-02-28
Patent
Elektronische Ressource
Englisch
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
MOTOR VEHICLE VACUUM PUMP AND METHOD FOR CONTROLLING A MOTOR VEHICLE VACUUM PUMP
Europäisches Patentamt | 2021
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