Water pump for the cooling circuit of an internal combustion engine
US6257177A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 4, 1999 |
| Grant date | Jul 10, 2001 |
| Priority date | — |
| Expiry date | Mar 4, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01P2070/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A water pump for the cooling circuit of an internal combustion engine. The water pump includes a pump housing and a pump device driven in the pump housing. A servo valve having a rotary gate is integrated in the pump housing. The rotary gate is approximately sleeve-shaped and is provided with an axial main opening for supply or discharge of cooling medium to the suction or pressure side of the pump device. Inlet and discharge openings for a cooler line connected to a cooler and for at least one additional partial circuit are provided in the peripheral wall of the pump housing. The rotary gate has on its peripheral wall a control opening with an opening width through which a connection from the main opening is created to an individual inlet or discharge opening, or an overlapping connection is created to two adjacent inlet or discharge openings for mixed operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.