| 摘要 |
<p>The invention relates to an internal combustion engine, specifically an internal combustion engine running in a heavy-fuel way. The internal combustion engine has an engine with a plurality of cylinder, a supercharging device with at least one turbocharger, a waste gas purifying device with an SCR catalyst and an ammonia generator used for generating ammonia through urea solutions. The generated ammonia is used for acting on reducing agents of the SCR catalyst. Supercharged air can be conveyed to the ammonia generator through a bypass pipeline diverged from a supercharging air pipeline. By means of a nozzle of the ammonia generator, the urea solutions can be introduced to the supercharging air diverged through the bypass pipeline. The urea solutions are resolved into vapor, carbon dioxide and ammonia through the supercharged air guided by the bypass pipeline in an ammonia generator hydrolysis catalyst behind the nozzle. When observed from an exhaust gas flowing direction, the bypass pipeline is communicated with an exhaust pipeline on the upstream of the SCR catalyst so that the supercharged air guided by the ammonia generator can be blended with exhaust gas on the SCR catalyst upstream.</p> |
