Electric motor vehicle vacuum pump arrangement |
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| 申请号 | US14772784 | 申请日 | 2013-03-05 | 公开(公告)号 | US09989058B2 | 公开(公告)日 | 2018-06-05 |
| 申请人 | PIERBURG PUMP TECHNOLOGY GMBH; | 发明人 | Nabil Salim Al-Hasan; Mathias Zill; Sebastian Cramer; Daniel Mueller; | ||||
| 摘要 | An electric vehicle vacuum pump assembly includes a combination, a separate acoustic barrier casing configured to encase the combination in each of a radially-spaced relationship and an axially-spaced relationship, and an annular gastight attenuation assembly radially arranged between the separate acoustic barrier casing on a first side and the combination on a second side. The combination comprises a pump unit and a drive motor comprising a rotor space, a stator space, a ventilation inlet, and a ventilation outlet. The rotor space comprises a motor rotor, and the stator space comprises a motor stator. The separate acoustic barrier casing comprises an intake connection and a discharge connection. The ventilation inlet and the ventilation outlet of the drive motor are configured to provide a forced ventilation past the annular gastight attenuation assembly and through at least one of the rotor space and the stator space. | ||||||
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