| 摘要 |
PURPOSE:To eliminate effectively such a trouble as the occurrence of excessive rich fuel-air mixture at high temperatures without provision of a particular high temperature compensating system causing complication of the construction by an arrangement wherein a feedback carburetor system is utilized efficiently. CONSTITUTION:The opening area of an air bleed passage 11 in a main system 5 and that of an air bleed passage 12 in a slow-down system 8 are variably controlled by a feedback carburetor system 13. The slow-down system 8 is provided with a high temperature compensating means 21 adapted to increase quickly the area of open passage at a high temperature. The high temperature compensating means 21 is of a configuration which is obtained by removing the tip of a conventional needle 18b by a required length l and is arranged such that when the needle valve 18b is moved away from a valve seat's hole 18a beyond a control range at the normal temperature the area of an air passage 18c defined between the needle valve 18b and the valve seat hole 18a is increased quickly. |
