Delivery device for delivering a medium and for limiting a system pressure
US10563608B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 16, 2015 |
| Grant date | Feb 18, 2020 |
| Priority date | — |
| Expiry date | Dec 16, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2205/05
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A delivery device for delivering a medium in a vehicle and for limiting a system pressure of the delivery device includes a vehicle pump, which is driven by an electric motor. The electric motor is controlled by a controller, the controller being configured to detect an actual rotational speed of the electric motor and an actual operating current of the electric motor. If the actual operating current of the electric motor exceeds a predefined operating current limit value, the controller is configured to generate a first signal relating to a system pressure being exceeded. The predefined operating current limit value is dependent on the actual rotational speed of the electric motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.