| 摘要 |
The invention relates to an internal combustion fuel injection engine for two-stage expansion provided with one or more pairs of cylinders. Each unit includes a four-stroke first-stage cylinder (1) and a second-stage, double-acting, two-stroke cylinder (3) each driving a crankshaft (18 and 24). The crankshafts being interconnected by gear wheels of a 2 by 1 ratio. Cylinder (1) features fuel injection (5), inlet valve (5) and outlet valve (6), the latter being connected by duct (34) to the top of cylinder (3) for conveying the part-expanded gases for final expansion and expulsion through outlet valve (7). The bottom space of cylinder (3) serves as supercharger (14) which discharges compressed air to an intercooler (30) from where compressed and cooled air is conveyed to cylinder (1) via inlet valve (5). |
