CIMAC Congress - Schiff & Hafen

Monday, 14 June
Tuesday, 15 June
Japanese metropolitan areas. It is installed in the CNT-3000EA
generator set which generates 3000kVA. Furthermore, it is scaled up
to 6000kVA by using a twin NGT3B gas turbine. Although the
generator set is large, it can be quickly started within 40 seconds
defi ned by the fi re defense law in Japan. An additional specifi cation
of rapid restarting within 40 seconds after an engine stop increases
reliability for a standby generator set. The other features are lightness,
a digital control, a remote monitoring system and a low leakage
lubricating system. The gas turbine engine is composed of a single
shaft, two-stage centrifugal compressor, three-stage axial turbine, a
single-can combustor, and a dual-fuel injector. One characteristic is
turning-less for rotor cooling after the engine stops. Characteristic
positions of rotor bearings realize it. The rated output power is
increased from 2207kW to 2648kW by the improvement of NGT3A
base model. A thermal effi ciency achieves 24.7%. On the other
hand, the maximum power is 2800kW, so some margin is given to
the rated output power. Durability against the heat cycle by the fast
start is tested by repeated engine starts and stops. And rapid restarting
tests within 40 seconds are done on the assumption that power
grids are returned during the engine stops. Long no load continuous
running tests improve reliabilities of early standby to blackout. Over
load tests confi rm the durability of hot parts. There is no problem
for durability of the engine. Any remarkable decrease in performance
can be detected in the durability tests.
This paper describes the design features of major engine component
and a generator set for NGT3B. An engine performance and
durability tests results are also shown.
June 15th Exhibition area
Poster Session
Session 1
The design of a new generation mediumspeed
research engine
O. Kaario, M. Imperato, A. Tilli, K. Lehto, O. Ranta, E.
Antila, A. Elonheimo, T. Sarjovaara, M. Nuutinen, M.
Larmi, Aalto University School of Science and
Technology, Finland,
T. Roennskog, S. Pisilae, Componenta Pistons Oy,
Finland,
J. Tiainen, I Kallio, H. Rinta-Torala, Wärtsilä Finland
Oy, Finland
Session 2
Improving the combustion process in leanburn
natural gas compressor engines
R. Evans, R. Brown, A. Mezo, The University of
British Columbia, Canada
Combustion system design study to
maximize thermal efficiency in open
chamber stationary natural gas engines
L. Tozzi, E. Sotiropoulou, D. Chiera, J. Adair,
Woodward , USA
D. Montgomery, P. Jensen, B. Hanks, A. Kim,
Caterpillar, USA
Wednesday, 16 June Thursday, 17 June
Session 3
Effects of Miller timing on the performance
and exhaust emissions of a non-road diesel
engine
S. Niemi, University of Vaasa and Turku University
of Applied Sciences, Finland,
P. Nousiainen, P. Lassila, V. Tikkanen, K. Ekman,
Turku University of Applied Sciences, Finland
Emissions – The way ahead
P. Tremuli, A. S. Carter, Ricardo UK Ltd., UK
Improvements to transient response times
and decreased smoke production in
medium speed marine propulsion diesel
engines
T. Yamada, Y. Okano, K. Hanamoto, S. Shimomura,
Daihatsu Diesel MFG.Co., Ltd., Japan
NO formation model of a diesel engine
based on quantum chemistry
S. Zhou, T. Xu, Y. Zhu, Harbin Engineering University,
P.R. of China
Optimization of combustion system to
comply with IMO Tier 2 regulation on
medium speed diesel engines
K. -D. Kim, W. -H. Yoon, S. -H. Ghal, H. -I. Kim,
Hyundai Heavy Industries Co., Ltd., Korea,
C.-S. Bae, Korea Advanced Institute of Science and
Technology, Korea
Session 6
Wärtsilä gas engines – the green power
alternative
H. Sillanpaeae, U. Astrand, Wärtsilä Finland Oy,
Finland
Integrated cylinder pressure measurement
for gas engine control
S. Neumann, M. Bienwald, Imes GmbH, Germany
Session 12
Acid and base in engine oil and the correct
determination of oil change intervals
F. W. Girshick, Infineum USA, L.P., USA
No. 3 | 2010 | Ship & Offshore
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