| 摘要 |
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.
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