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近十多年来,大型柴油机制造厂多致力于通过涡轮增压来达到柴油机的更大单机功率,并从而降低装置的单位功率造价.几年前即开始生产p_e=21 的四冲程柴油机系列产品,其增压压力约为3.2巴,看来它已达到了单级增压的极限; 如果要进一步提高平均有效压力,则需要发展二级增压.至今经验表明,即使使用二级增压来达到平均有效压力p_e=25巴的目标,其造价也很高.
For more than a decade, large-scale diesel engine manufacturers have focused more on turbochargers to achieve larger stand-alone power and thus lower the unit-per-unit cost of the unit, starting several years ago in the production of a four-stroke diesel engine with p_e = 21 , The boost pressure is about 3.2 bar, it seems it has reached the limit of single-stage supercharger; if you want to further improve the average effective pressure, you need to develop two supercharger experience so far shows that even if the use of two supercharger The target of reaching an average effective pressure p_e = 25 bar is also very expensive.