Niigata has developed and manufactured many four-stroke engines for land, marine and rail car applications up to now. Recently, the four-stroke engines are developed mainly with the environmental preservation as well as taking economy, durability and maintainability, etc. into account for each application. In this paper, these developments for land and marine use are presented. The design and development by 3D-CAD based on the performance simulation and the structure analysis, etc. for the land use diesel engines is described. These engines with NO(x) reduction technologies by engine itself and SCR system if necessary can comply with all regulations in the world. The orientation for low exhaust emission is also discussed. Recently, the private houses near the generating power plant are increasing. Therefore, there is a case that becomes a big problem even if the smoke at starting is generated. The CTC (Combustion supplemented Turbo Charger) system, developed by Niigata, is one of the answers to this question. When this system is installed in the engine, the turbocharger speed increases smoothly by the combustion energy at starting, and the smoke is improved remarkably. Some systems are already in service and these results are also discussed. Gas engine is one of the big issue when we talk about environment. Niigata has been developing environmental friendly gas engines since early 80's, such as stoichiometric SI gas engines, dual fuel gas engines and lean burn SI gas engines. Especially lean burn gas engine with micro pilot ignition, named as Niigata AG series, is recent big success, which realizes 30 % more power output and 20 % better efficiency than conventional lean burn SI engines. Field results and further development is discussed in the paper. On the other hand, the main markets for our marine diesel engines are tugboats, fishing boats, and high-speed vessels, etc. The NOx reduction measures and durability improvement measures for these engines are basically the same as the land use engines. Niigata's developed NO(x) reduction measure with maintaining high thermal efficiency by optimizing engine parameters can comply with the NO(x) regulation of IMO MARPOL 73/78 ANNEX VI. To realize it, a lot of performance simulation calculations are introduced, and the development period has been shortened. In addition to these examples, the future exhaust emission reduction measures to comply with strengthened regulation are discussed.
Development of Niigata 4 stroke engines
2007
9 Seiten, 28 Bilder, 5 Quellen
Aufsatz (Konferenz)
Datenträger
Englisch
Development of Niigata 4-stroke engines
British Library Conference Proceedings | 2007
|Environmental contribution with Niigata marine diesel engines
British Library Conference Proceedings | 2007
|Environmental contribution with Niigata marine diesel engines
Tema Archiv | 2007
|Online Contents | 1994
Online Contents | 1993