| 摘要 |
PURPOSE:To stabilize combustion by a method wherein an exhaust gas injection pipe, communicated to the position of the dead point higher than an exhaust port in a cylinder, is opened in a scavenging path located at least lower side with respect to the cylinder, in the engine in which the cylinder is arraged horizontally. CONSTITUTION:The cylinder 13 of the internal-cmbustion engine 11 is arranged horizontally in a cylinder block 12. In this case, a connecting pipe 29 is arranged at the position of upper dead point side than the exhaust port 25A in the cylinder block 12 and the cylinder 13. The connecting pipe 30 is arranged at a part forming the intermediate part of the outflow port side of the lower scavenging path 26 in the cylinder block 12. Both connecting pipes 29, 30 are communicated with each other through the exhause gas injection pipe 31. According to this constitution, high temperature exhaust gas, generated in a combustion chamber 23 in the down stroke of a piston 18, is injected into the intermediate part of the lower scavening path 26 from the exhaust gas injection pipe 31 which opens earlier than the exhaust port 25A to vaporize fuel being flowed into the lower scavenging path 26 in the condition of liquid film. |
