System removing entrapped gas from an engine cooling system
US6135067A · kind A · utility
27Cited by
19References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1998 |
| Grant date | Oct 24, 2000 |
| Priority date | — |
| Expiry date | Aug 21, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01P2025/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An apparatus includes a closed container having an inlet connected to a radiator of an engine cooling system. An outlet of the container is coupled to the suction port of a venturi that has an inlet port connected by a solenoid valve to a source of pressurized air. A controller opens the solenoid valve for a given interval whenever the engine is turned off. That action creates a negative pressure in the container which bleeds gas from the radiator. Any coolant that also is removed from the radiator is collected in the container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.