It is expected that, in the future, ships will operate under ideal conditions which take into account safety, reliability and cost. Propulsion engines installed on such ships are required to have greater versatility which can secure optimal operation in response to changing conditions ( including engine load and speed, fuel properties, and atmosphere ). Electronic control is a vital technology which realizes the greater versatility of marine diesel engines. The fuel injection and inlet/ exhaust

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... valve systems remarkably influence the engine performance. However, these systems are not yet fully controlled electronically in practical use.