Control system for engine with supercharger
US5090392A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1990 |
| Grant date | Feb 25, 1992 |
| Priority date | — |
| Expiry date | Jun 14, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A mechanical supercharger of an internal combustion engine has a housing formed with inlet and outlet ports and a pair of spiral screws rotatably received in the housing for partially compressing air introduced in the mechanical supercharger and carrying it from the inlet port to the outlet port. The supercharger is disposed after a throttle valve in an intake system of the engine, and is provided with a relief port allowing compressed air to be relieved from the supercharger. The relief port is formed in the housing between the inlet and outlet ports where air is compressed to allow compressed air to be relieved. A relief valve is controlled to variably open according to engine operating conditions and relieve compressed air in the supercharger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.