4.10. General information about the carburetor
Early models are equipped with the Solex 2B4 carburetor, and later models are equipped with the Solex 2BE carburetor. Both carburetors are two-chamber with a falling stream. The first chamber copes mechanically an accelerator pedal, and the second has vacuum management.
Each chamber has the separate poplavkovy chamber, a float and the needle valve, the influences of braking intended for reduction and centrifugal forces.
On model 2В4 the air valve of the first step copes automatically (a bimetallic spring with electric heating) at engine warming up. Mix enrichment at warming up also is provided with the thermovalve operated depending on temperature of a cooler, and the thermooperated valve of an air stream.
On model 2 automatic control in parameters of the carburetor at warming up and normal working temperature of the engine is carried out by the electronic control unit. The control unit is located under the dashboard on the right side.