Page 86: of Maritime Reporter Magazine (August 2016)

PROPULSION

CIMAC 2016

Seen &

Heard

Some things old.

Some things new.

REPORTING BY HENRIK SEGERCRANTZ increases in the focus of engine devel- sumption has decreased from some 210 nearly doubled, with large engines be- opers, despite the dip in fuel prices. g/kwh to some 165 g/kwh (with shaft ing the forerunners.

New emission regulations continue to ef? ciency reaching above 50% reduc- drive the industry further, faster. With ing also CO2 emissions). This has been • The maximum ? ring pressure this backdrop, earlier this summer CI- possible by advancements in combustion (in the cylinder, improving ef? ciency, 35 MAC once again served as the gathering shape combined with fuel injection and lowering emissions and setting more re- years ago there were more than 30 en- ground for some of the world’s best and increased maximum cylinder pressure, quirements on strength) has increased to gine builders, LNG carriers had steam brightest propulsion minds. reduced heat transfer, reduced friction some 270 bar from some 130 bar. turbines and there were not many diesel and parasitic losses, reduced ? ow losses engine driven ships. Today emission re- and two-stage turbo charging. • Tier III limits, cutting NOx to duction, electronic control and automa- 75% below original, entered into force

The Evolution of: tion are on the forefront, gas engines are • The speci? c output (BMEP from ships keel laid from this year in emerging fast, with further ef? ciency • The break speci? c fuel con- - break mean effective pressure) has the ECA areas. With Tier III you really

TONON, MAERSK GISIGER, PAULSEN, ROBERTSSON

MARITIME TECH ABB KONGSBERG STENA REDERI 86 Maritime Reporter & Engineering News • AUGUST 2016

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