In the present work, a 2.0L Euro 5 compliant diesel engine, equipped with an advanced electronic combustion control system, has been set up to operate in Dual Fuel (DF) Diesel- Natural Gas (NG) DF mode. An experimental campaign has been devoted to the engine optimization, in order to assess the achievable reduction of unburned hydrocarbon emissions, keeping the peculiar benefits of DF combustion. A thorough analysis of the effects of many engine control parameters (e.g. NG substitution ratio, diesel pilot injection strategies, EGR, etc.) on DF engine performance was performed. Combustion timing and EGR- displayed a strong potential on Total Hydro-Carbon (THC) emissions control (represented for more than 90% by CH4), exhibiting wider margins of engine recalibration, in comparison with the use of a standard Diesel calibration also in DF mode.
Analysis of engine control parameters effect to minimize GHG emissions in a dual fuel NG/Diesel light duty engine
C Beatrice;V Fraioli;C Guido;P Napolitano
2018
Abstract
In the present work, a 2.0L Euro 5 compliant diesel engine, equipped with an advanced electronic combustion control system, has been set up to operate in Dual Fuel (DF) Diesel- Natural Gas (NG) DF mode. An experimental campaign has been devoted to the engine optimization, in order to assess the achievable reduction of unburned hydrocarbon emissions, keeping the peculiar benefits of DF combustion. A thorough analysis of the effects of many engine control parameters (e.g. NG substitution ratio, diesel pilot injection strategies, EGR, etc.) on DF engine performance was performed. Combustion timing and EGR- displayed a strong potential on Total Hydro-Carbon (THC) emissions control (represented for more than 90% by CH4), exhibiting wider margins of engine recalibration, in comparison with the use of a standard Diesel calibration also in DF mode.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
