Marine Engineering
Online ISSN : 1884-3778
Print ISSN : 1346-1427
ISSN-L : 1346-1427
Development of Electronically Managed Low Speed 4-stroke Engines
Hiroyuki OkadaKouji TujiokaMakoto IdeguchiYoshimitsu Fujimoto
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2009 Volume 44 Issue 4 Pages 631-634

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Abstract
In order to handle the increasingly strict environmental standards we looked at the electronic management of the engine, as used for marine applications. This holds one of the most effective solutions to reduce antinomy NOx and CO2 emissions, and at the same time. Electronic-managed two-stroke engines have been with us for some time, though not yet for the four stroke engine, this is because of the high cost. The development of this project is aimed at improving combustion efficiency, NOx reduction, and minimizing the cylinder lubricant dosage rate. This in the operating area, not only of the rated power zone, but also the partial load zone. By managing electronically, the performance excels in a wide operating range. The characteristics of fuel injection, intake and exhaust valve operating time, and the cylinder lubricator, utilize the inherent advantages of the four stroke engine.
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© 2009 The Japan Institute of Marine Engineering
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