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1.前言气缸直径为200～400毫米的中小型柴油机,单缸功率在100～600马力、转速在300～1200转/分范围内,其大部分是四冲程、直接喷射式,并带增压器和中间空气冷却器,平均有效压力 P_6在8～22千克力/厘米~2范围内。它们广泛地用于中小型船舶的主机,大型船用辅机、发电、动力装置和机车车辆等方面。其所使用的燃油,以前是以轻油、A 或 B级重油为主,而现在则从煤油到3500秒 C 级重
1. Introduction Small and medium-sized diesel engines with cylinder diameters of 200-400 mm have a single-cylinder power of 100-600 hp at speeds of 300-1200 rpm, most of which are four-stroke, direct-injection and supercharged And the intermediate air cooler, the average effective pressure P_6 in the range of 8 to 22 kgf / cm ~ 2. They are widely used in small and medium-sized ships host, large marine auxiliary, power generation, power plant and rolling stock and so on. The fuel used, formerly light oil, A or B heavy oil-based, and now from kerosene to 3500 seconds C-class weight