本文阐述了直接喷射式燃烧室国内外发展简况,并通过作者的实践,对直接喷射式球型和ω型作了比较和评价,指出了直接喷射式燃烧系统的设计、制造要点,例举了两种机型改为ω型的实例。作者认为,大多数老产品只要少量改动工艺装备均可实现改型,这种改型是当前切实可行的节能途径。 This article describes the development of direct injection combustion chamber at home and abroad, and through the author’s practice, the direct injection of spherical and ω-type were compared and evaluated, pointed out the direct injection combustion system design, manufacturing points, Two models to ω type instance. The author believes that most of the old products can be modified with only a small amount of changes in process equipment. This modification is currently a feasible energy saving way.