Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
ANALYSIS OF LAMBDA, ANGLE OF INJECTION AND SUBSTITUTION RATE IN HYDROCARBONS EMISSIONS IN DIESEL CYCLE ENGINE OPERATING IN DUAL FUEL MODE
Submission Author:
Silvio Cesar de Lima Nogueira , PR
Co-Authors:
Silvio Cesar de Lima Nogueira, Stephan Hennings Och, Luís Mauro Moura
Presenter: Silvio Cesar de Lima Nogueira
doi://10.26678/ABCM.COBEM2017.COB17-2104
Abstract
In urban centers, the highest pollution rate comes from large engine vehicles and within this scenario, natural gas is an attractive option to use as fuel in Diesel cycle engines, since its application in this type of engine does not require major constructive changes. In terms of atmospheric emissions, it presents a clean burning because it has approximately 90% of methane in its composition, it reduces NOx emissions by around 27%, emissions by 77% and the emission of smoke is practically zero when used in Diesel cycle engines. In this research, engine-operating parameters related to air / fuel ratio, Diesel injection angle and Diesel / natural gas substitution rate were changed in Diesel engine operating in Dual fuel mode. Total hydrocarbon emissions in the Dual fuel mode will be evaluated, aiming to maintain the same efficiency that the engine presents using only Diesel as fuel. Engine tests were performed based on the European Stationary Cycle to define the measure point. After that, the ESC B50 engine operation point was defined, and a design of the experiment was elaborated, to determine the best combinations of the proposed parameters. Engine essays were repeated with changes defined in design of the experiment methodology to analyze the total emission hydrocarbon changes.
Keywords
DUAL FUEL, Diesel, natural gas, hydrocarbon emission, lambda
