Gerotor pump for a vehicle
US9879672B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 2, 2015 |
| Grant date | Jan 30, 2018 |
| Priority date | — |
| Expiry date | Mar 23, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2270/13
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A gerotor pump has a pump housing defining a chamber and having a fluid inlet and a fluid outlet. An outer gear member is supported for rotation within the chamber about a first axis, the outer gear member having a series of internal teeth. An inner gear member or inner rotor is rotatably supported within the outer gear member about a second axis spaced apart from the first axis. The inner gear member defining a series of external teeth interposed with a series of external pockets. The inner gear member defines a fluid passage therethrough to fluidly connect two nonadjacent pockets, with another pocket independent of fluid passages. The fluid passage is configured to disrupt harmonics during operation to reduce pressure ripples and associated tonal noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.