Abstract
The basic desiderata which led to the development of the first series of very compact high-speed high-output diesel engines of V design developing 1400−1000 hp (metric) and having 8, 12 and 16 cylinders with ‘square’ cylinder dimensions are mentioned and the results obtained. Stroke and bore are 230 mm, the rated speed is 1500 rev/min. These engines are intended mainly for rail traction purposes but also for marine plants and generating sets, etc. Special importance was devoted in design work to the provision of a simple structure and maintenance, with a small requirement of special tools. The engine is the one with the largest single-cylinder swept volume and the highest UIC cylinder output of all 1500-rev/min engines existing today.
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