| 摘要 |
In order to improve the organic engine efficiency and the polluting characteristics, as regards the present engines, I propose a new type of crank mechanism - ''four dead centers crank mechanism'' - which has the following most important kinematic characteristics: we can stop the piston at the top dead center for a period corresponding also with a rotation of 120 degrees of the crankshaft; the induction and exhaust strokes are more speed than traditional one (with the same turn velocity omega ). All these characteristics riverberate thermodinamically in a combustion at constant volumes and at minor heat exchanges between evolving fluid and cylinder wall. |
