abstract |
The utility model discloses a EGR system suitable for dual -fuel engine overcomes THC and NOx and discharges high problem, and the EGR system includes turbo charger, EGR control piper, EGR three -way valve, air inlet pipeline and natural gas supply pipeline, the import and the EGR control piper of EGR three -way valve are connected, and the other end and the blast pipe of dual -fuel engine body of EGR control piper are connected, no. 1 export and " EGR+ air " tube coupling of EGR three -way valve, the other end of " EGR+ air " pipeline is connected with " EGR+ air " blender of air inlet pipeline, no. 2 exports of EGR three -way valve are connected with " the EGR+ natural gas ", and the other end and the natural gas supply pipeline of " the EGR+ natural gas " pipeline are connected, and the other end of natural gas supply pipeline is connected with the air inlet pipeline, and the other end of air inlet pipeline is connected with turbo charger's compressor, turbo charger's turbine and this body coupling of dual -fuel engine. |