Experimental Study on Effect of DOC+DPF on Gaseous Pollutants in Explosion-proof Diesel Engine
HJ1014-2020"Technical Requirements for Pollutant Emission Control of Off-road Diesel Mobile Machinery",the national emission standard for off-road diesel engines,was issued and implemented on December 28th,2020.Underground explosion-proof diesel engines should also be fully prepared to meet the national emis-sion requirements.The surface temperature of explosion-proof diesel engines should not exceed 150℃,so DOC and DPF need to be equipped with water jackets or heat insulation devices before they can be used.Therefore,the impact of adding DOC+DPF on the exhaust emission of explosion-proof diesel engines remains to be verified by experiments.In this paper,the existence of aftertreatment device is verified by bench test of explosion-proof diesel engine,and the influence of DOC+DPF on the emission of explosion-proof diesel engine is studied.
Explosion-proof diesel engineNational four emission requirementsDOC+DPFBench test
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