| 摘要 |
PROBLEM TO BE SOLVED: To well maintain the operating state of an engine up to the idle operation by a fuel feed system for starting and automatically adjust the air-fuel mixture to an appropriate concentration during the high-speed operation in a carburetor for a bi-starter type gasoline engine. SOLUTION: This carburetor 1A for the gasoline engine comprises an automatic opening/closing mechanism 9 for automatically controlling to open/close a fuel feed passage, a fuel sump 60 in a well 6A under the oil level, and a fuel feed system for starting connecting a float chamber 5A to an intake passage separately from the main fuel feed system. A second bypass air bleed passage 4c is connected to the fuel feed passage between the well 6A and the automatic opening/closing mechanism 9 from the intake air passage side. Air is introduced by the time of the idle operation after the start of the engine to thin the mixture for starting for manufacturing a sustainable air-fuel mixture. During the high-speed operation after the automatic opening/closing mechanism 9 is closed, the air-fuel mixture for starting is fed into the intake passage. In this case, the carburetor functions also as a richer for high-speeds. COPYRIGHT: (C)2007,JPO&INPIT |
