| 摘要 |
Disclosed herein is a carburetor which includes two diaphragm chambers within the carburetor housing. One diaphragm chamber forms part of a pulse actuated fuel pump and the other diaphragm chamber is the main fuel metering diaphragm chamber. Both the fuel pump and the main diaphragm chamber are formed from opposed recesses in mating surfaces of a housing cover and a housing surface. The opposed recesses forming each diaphragm chamber are separated by a common diaphragm which extends between the mating surfaces of the cover and housing. The fuel pump is operated by pressure variations in the crankcase which communicate with the fuel pump through a passage in the carburetor housing.
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