| 摘要 |
PURPOSE:To improve efficiency of suction and exhaust by making suction and exhaust valve a double mechanism capable of a double action. CONSTITUTION:Main valve 11 having air vent 21 is opened in successive motion with sub-valve 19 after the opening motion of sub-valve 19 which opens and closes air vent 21 of main valve 11. Therefore, actual opening area is enlarged, so that efficiency of suction and exhaust can be improved. Such effect as improvement of combustion speed in the sucked mixing air and distribution promotion of exhaust gas between the sucked and exhausted air is then mixed up by circling current which passes the air vent. |
