Device for adjusting the pumping capacity of a lubricant pump for an internal combustion engine
US7549848B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 1, 2003 |
| Grant date | Jun 23, 2009 |
| Priority date | — |
| Expiry date | Oct 25, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01M2001/0238
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system for controlling the pumping capacity of a lubricant pump for an internal-combustion engine, having a vane cell pump (2) which has a rotor body (4), rotor blades (10) which can be radially displaced in the rotor body as well as a lifting ring (12) (stator) whose position can be adjusted with respect to the axis of rotation of the rotor for changing the delivery volume as a function of operating parameters of the internal-combustion engine. The lifting ring (12) is linked to an adjusting piston (28) guided in a valve bore (30) of a pressure regulating valve (26), which adjusting piston (28) is acted upon by engine oil pressure on a piston front side (34), the piston front side (34) being connected with the piston rear side (37) by way of a throttle bore (62).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.