Oil pump unit with variable flow rate
US9249700B2 · kind B2 · utility
0Cited by
6References
4Claims
0Family size
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Key dates
| Filing date | Sep 9, 2011 |
| Grant date | Feb 2, 2016 |
| Priority date | — |
| Expiry date | Jun 30, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01M2001/0246
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An oil pump unit with a variable flow rate includes: an oil pump having an intake port and a discharge port and accommodating a pump rotor; and an oil path switching valve having oil inlets and oil outlets and opening/closing oil pressure return holes communicating with the discharge port, in which the oil path switching valve and the oil pump are separately disposed, the intake port and the discharge port are open to valve-mounting surfaces formed at the oil pump, and oil inlets and the oil outlet are open to body-mounting surfaces matching with the valve-mounting surfaces of the oil path switching valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.