| 摘要 |
A carburetor 9 for feeding separate lean and rich channels 12, 13 of an engine intake duct 14 comprises a body 20 having a mixing passage 22 with an air intake side 24 and an engine outlet side 26. A throttle shutter 16 is rotatable about an axis transverse the mixing passage, and a partition 10 is located within the mixing passage upstream of the throttle shutter. The downstream edge of the partition 10 is adjacent the throttle shutter axis 16A whereby in use of the carburetor the partition defines and extension of the lean and rich channels upstream of the throttle shutter, the partition thus providing substantioal isolation between the lean and rich channels for al rotational positions of the throttle shutter. In a preferred embodiment a choke shutter 17 is located upstream of the throttle shutter and is rotatable about a further axis 17A transverse the mixing passage, the upstream edge of the partition being adjacent to the axis of the choke shutter. <Figure 2>
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