Turbocharging system for an internal combustion engine
US4674283A · kind A · utility
23Cited by
3References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1985 |
| Grant date | Jun 23, 1987 |
| Priority date | — |
| Expiry date | Oct 16, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A turbocharging system for an internal combustion engine improves performance and efficiency under low-speed, high-load operating conditions by adding secondary air to the exhaust gas upstream of the turbocharger. The secondary air combusts with unburned fuel contained in the exhaust gas to increase the temperature and pressure of the exhaust gas driving the turbocharger. Secondary air is added only when the exhaust gas temperature is above a prescribed temperature and the air-fuel ratio of the exhaust gas is below a prescribed ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.