Radi lakšeg snalaženja:
žuto -
gorivoplavo -
zrakzeleno -
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Normal OperationThe fuel arrives through the needle valve (1) to the bowl (4) where the float (3) controls the opening of the needle (2) in order to maintain a constant fuel level. Through the ducts (6) and the main jets (5), it reaches the emulsioning tubes (12) from which after having been mixed with the air coming from the air corrector jets (11), through the pipes (10) and the nozzles (7) it reaches the carburation area consisting of the auxiliary Venturi's (8') and chokes (9).
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Cold Start DeviceThe fuel flowing from the bowl (4) arrives to the starting device through the ducts (32) and the starting jets (30). Emulsified with the air coming from the hole (29) it reaches the valves opening (35) through the ducts (31) and definitely emulsified by the air entering from orifices (34) is then carried by means of the ducts (33) to the carburetor throats below the throttles.
O Engine cold starts: starting device inserted (position A)
O Engine starts half warm: partial insertion of the device (position B)
O Engine warm ups: during engine warming up, even if the vehicle is under way, the starting device must be gradually pushed into the rest position.
O Normal operation: starting device must be pushed back as soon as the engine has reached the operating temperature (position C)
Note: Alot of people tend to block the cold start mechanism up because on the older carbs where they are worn they will just overfuel or leak fuel, making tuning the carbs near impossible. This can be done by making an aluminium plate of the same dimensions and an appropriate gasket.
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Idling Operation and Progressive ActionThe fuel is carried from the bowl (4) to the calibrated holes of the idling jets (14) through the ducts (15). Emulsified with the air coming from the ducts (13) through the ducts (20) and the idling feed holes (18') adjustable by means of screws (19) the fuel reaches the ducts (20) the mixture can reach the carburetor throats also through the progression holes (16)
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Acceleration StageBy closing the throttle valves, the lever (25) , by means of the shaft (27), lifts the piston (26). the fuel is thus drawn from the bowl (4) into the pump cylinder through the suction valve (23). By opening the throttles, the shaft (27) is free and the piston (26) is pushed down under the action of the spring (28), by means of the ducts (22) the fuel is injected into the carburetor throats. The inlet valve (23) is provided with a calibrated hole which is discharges the excess fuel delivered by the accelerating pump in to the float bowl.
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Tema povezana uz ovu;
PRORAcUN DIZA I DIFUZORA ZA DCOE WEBERE 