Vacuum supply system with throttling valve in a motor vehicle
US4989496A · kind A · utility
2Cited by
14References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 1, 1989 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Mar 1, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7836
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vacuum supply system for a brake power assist unit of a motor vehicle with at least one additional vacuum consuming device is achieved by the installation of a valve, which can be switched as a function of existing vacuum level in a pipe leading from the vacuum generating device to the at least one additional consuming device. Switching of the valve causes a throttling of this pipe to be more extensive when the existing vacuum level is above a certain absolute pressure value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.