Jet pump for boosting pressure at an inlet supplied from a sump and second fluid source
US7192257B2 · kind B2 · utility
5Cited by
7References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2003 |
| Grant date | Mar 20, 2007 |
| Priority date | — |
| Expiry date | Aug 12, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B39/0055
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The automatic transmission for motor vehicles includes a positive displacement pump, a sump hydraulically connected by a passage to the pump inlet, a line pressure control valve having a high pressure outlet, a passage carrying fluid from the control valve through a nozzle and an nozzle exit opening to the passage that connects the sump to the pump inlet. The high pressure passage has a cross section whose area decreases in the direction toward the pump inlet and terminates in a nozzle through which a high speed jet enters the low pressure passage through the nozzle exit opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.