Injection, Combustion and (Nano) Particle Emissions of a Modern HD-Diesel Engine With GTL, RME & ROR

J. Czerwinski; Y. Zimmerli; T. Neubert; A. Heitzer; M. Kasper

doi:10.4271/2007-01-2015

2007-07-23

Injection, Combustion and (Nano) Particle Emissions of a Modern HD-Diesel Engine With GTL, RME & ROR 2007-01-2015

Due to the limited energy resources as well as due to increasing CO₂-emissions the importance of alternative- and biogene fuels increases continuously.

Investigations of the engine operation were performed on a latest technology Liebherr engine for construction machines, which was operated using crude rapseed oil (ROR), rapseed methyl ester (RME) and synthetic Gas-To-Liquid fuel (GTL) without any change of ECU setting. On this occasion the combustion diagnostics, behaviour of the injection system and the pollutant emissions, including the unlimited nano-particles were especially assessed.

For injection (with this unit pumps system) it can be stated, that ROR and a little bit less RME shorten the injection lag and increase the maximum injection pressure. At higher engine load this causes the 50% heat release a little earlier (1-2°CA) and as consequence higher NO_x and lower specific energy consumption.

Nevertheless the limited emissions CO, HC, NO_x, PM as well as the integrated nanoparticles counts and energy consumption show different results and different relationships between the fuels depending on the engine operating conditions.

Due to that a simple classification of the investigated fuels, like “best-worst” is not possible.

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Injection, Combustion and (Nano) Particle Emissions of a Modern HD-Diesel Engine With GTL, RME & ROR 2007-01-2015

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