Stoichiometric compression ignition engine with increased power output
US8474258B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2008 |
| Grant date | Jul 2, 2013 |
| Priority date | — |
| Expiry date | Dec 9, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A stoichiometric compression ignition engine has a turbocharger coupled to it so that the exhaust from the engine feeds the turbine and the compressor provides combustion air past a throttle and intercooler to the engine intake manifold. An exhaust after treatment device is positioned before the exhaust of the engine. A power turbine is connected in parallel relation to the turbocharger turbine and is controlled by a valve to operate the power turbine whenever either the turbocharger compressor boost or the turbocharger turbine back pressure exceed given limits. The power turbine is connected by a power transmission device to either couple to the engine output or to an electrical generator. An EGR loop may be driven by a pump also connected to the power turbine to lower in cylinder pressures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.