Altitude compensation for spark-ignited turbocharged internal combustion engines
US5442920A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1994 |
| Grant date | Aug 22, 1995 |
| Priority date | — |
| Expiry date | Mar 28, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A computer controlled, spark-ignited, turbocharged internal combustion engine has stored in memory, turbocharger compressor outlet absolute pressure for desired engine performance throughout the engine speed range at sea level (760 mm. H.sub.g) ambient pressure engine operating conditions. A sensor responsive to absolute pressure at the turbocharger compressor outlet continuously monitors the absolute pressure and compares it with the stored pressure for the engine speed at which the engine is operating at any particular time. When there is a difference, the computer responds to hold or change the waste gate position such as to hold or change the boost to re-establish the same compressor outlet absolute pressure as was stored for that engine speed under sea level ambient conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.