Performance and emissions of renewable blends with OME3-5 and HVO in heavy duty and light duty compression ignition engines
Artikel i vetenskaplig tidskrift, 2021

Interest in poly(oxymethylene)dimethyl ether (OME3-5) as an alternative to fossil fuels in compression ignition
engines has increased owing to its potential for soot reduction. The high oxygen content of the polymer and lack
of carbon–carbon bonds and aromatic structures can help to reduce engine out soot emissions. However, OME3-5
is potentially damaging to engine components, and thus engine modifications are required when using neat
OME3-5.
In the present study, OME3-5 was blended with hydrotreated vegetable oil (HVO), rapeseed methyl ester and
the C8-alcohol 2-ethylhexanol (an isomer of n-octanol) to ensure miscibility. Three blends were designed with an
oxygen content of 6.4, 12.8 and 17.8% by mass. Performance and emissions were compared to the reference fuels
fossil diesel and HVO in a single cylinder light duty and heavy duty compression ignition engine at different
loads.
Evaluation of the combustion in both engines showed similar trends: The indicated thermal efficiency was
slightly higher for the oxygenated fuel and the combustion duration shorter compared to diesel. Due to the lower
heating value of the blends, the indicated specific fuel combustion increased with increasing share of OME3-5 in
the blend.
For both engines, engine out soot emissions were decreased strongly, whereas NOx emissions were slightly
increased. Analysis of the particle size distribution showed a decrease in the particle number of agglomerated
particles (>30 nm) for the blends. For the heavy duty engine, an increase in nucleation mode particles (<30 nm)
was measured.

CI engine combustion

Renewable fuel blends

Hydrotreated vegetable oil

Particle size distribution

Författare

Josefine Preuss

Chalmers, Mekanik och maritima vetenskaper, Förbränning och framdrivningssystem, Förbränningsmotorer och framdrivningssystem

Karin Munch

Chalmers, Mekanik och maritima vetenskaper, Förbränning och framdrivningssystem, Förbränningsmotorer och framdrivningssystem

Ingemar Denbratt

Chalmers, Mekanik och maritima vetenskaper, Förbränning och framdrivningssystem, Förbränningsmotorer och framdrivningssystem

Fuel

0016-2361 (ISSN)

Vol. 303 121275

Framtida alternativa transportbränslen

Energimyndigheten (41139-1), 2015-12-01 -- 2019-12-31.

St1 Sverige, 2015-12-01 -- 2019-12-31.

Volvo Group, 2015-12-01 -- 2019-12-31.

Saybolt Sweden, 2015-12-01 -- 2019-12-31.

Preem AB, 2015-12-01 -- 2019-12-31.

Volvo Cars, 2015-12-01 -- 2019-12-31.

Perstorp BioProducts, 2015-12-01 -- 2019-12-31.

Scania CV AB, 2015-12-01 -- 2019-12-31.

Lantmännen Energi, 2015-12-01 -- 2019-12-31.

Ämneskategorier

Annan maskinteknik

Styrkeområden

Transport

DOI

10.1016/j.fuel.2021.121275

Mer information

Skapat

2021-06-28