卡特皮勒公司预测,柴油机将成为二十一世纪重型移动式设备的主要动力源。代用燃料、节油和控制废气排放方面的改进将保证这一点。(有关上述问题已于本刊第三卷第二期详细介绍——编者)。据《财政时报》的最近报导,柴油机的问题是世界非汽车柴油机生产厂已出现多年的问题,即世界柴油机的生产能力超过需求50％已在工业界持续多年。但生产能力和需求间的巨大不平衡已出现缓和的迹象。生产的重新组合这一最明显的变动是1986年7月通用汽车公司和约翰迪尔公司柴油机制造工厂的联合。即联合通用汽车公司 Caterpillar predicts that diesel engines will be the main source of power for heavy mobile devices in the 21st century. This will be guaranteed by improvements in alternative fuel, fuel economy and emissions control. (The above issues have been in this volume Volume III, Section II - Editor). According to a recent report in the Financial Times, the problem with diesel engines is that the world’s non-automobile diesel engine manufacturing plants have been experiencing problems for many years. That is, over 50% of the world’s diesel engine production capacity has exceeded that of demand, and has lasted for many years in the industrial field. But signs of easing have emerged as the immense imbalance between productive capacity and demand. The most noticeable change in the regrouping of production was the alliance between General Motors and John Deere’s diesel engine manufacturing plant in July 1986. United GM