Two-stroke engine and four-stroke engine
US9347366B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 26, 2011 |
| Grant date | May 24, 2016 |
| Priority date | — |
| Expiry date | May 15, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An exhaust gas exhausted from a combustion chamber of a two-stroke engine is fed to a turbine of a supercharger. Part of the exhaust gas that has passed through the turbine is extracted as an EGR gas by an exhaust gas recirculation part. The EGR gas is cooled by the heat of vaporization of liquid ammonia ejected from an ammonia ejection part, circulated into a suction gas in a suction path, pressurized by a compressor, and supplied as a scavenging gas into the combustion chamber. This recirculation of the exhaust gas can reduce the amount of nitrogen oxide exhausted from the two-stroke engine into the ambient air. Ejecting the liquid ammonia toward the EGR gas in a recirculation path facilitates cooling of the EGR gas, which is required for circulating the EGR gas into the suction gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.