Answer for What is high speed part load circuit

In this circuit throttle opens a bit more. At this time, the effect of sucking by the suction stroke comes on venturi. As a result, the air start going direct from air horn venturi with speed and it pulls main nozzle petrol along. In this way by mixing with the air, petrol produces the best mixture from the point of view of chemistry. But we cannot get much load on it because this passage opens or functions gradually and slowly.

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