Scheme of the main metering system of the carburetor and economizer
The economizer sprayer is located in the second chamber of the carburetor. In the diagram it is shown conditionally in the first chamber.
1 – emulsion jet of economizer; 2 – emulsion channel of econostat; 3 – air jet of the main metering system; 4 – economizer air jet; 5 – fuel jet of economizer; 6 – needle valve; 7 – float axis; 8 – ball of the locking needle; 9 – float; 10 – float chamber; 11 – main fuel jet; 12 – emulsion well; 13 – emulsion tube; 14 – first chamber throttle valve axis; 15 – spool groove; 16 – valve; 17 – Large diffuser; 18 – small diffuser; 19 – sprayer
The VAZ-2105 car is equipped with a 2105-1107010 emulsion type carburetor, two-chamber, with a falling flow.
It has a balanced float chamber, two main dosing systems, an enrichment device (economizer) with a pneumatic drive, a system for sucking crankcase gases behind the throttle valve, a branch pipe for supplying vacuum to the vacuum regulator of the ignition distributor, an autonomous idle system with a forced idle economizer (see Fig. Installing limiting bushings on the idle speed adjustment screws of the carburetor 2105-1107010) with electronic control based on the engine crankshaft speed.
Carburetor throttle drive diagram 2105-1107010
1 – pneumatic drive jet located in the diffuser of the first chamber; 2 – throttle valve drive lever; 3 – lever rigidly connected to the axis of the first chamber throttle valve; 4 – lever limiting the opening of the second chamber throttle valve; 5 – pneumatic drive jet located in the diffuser of the second chamber; 6 – lever connected to lever 9 via a spring; 7 – second chamber throttle valve axis; 8 – pneumatic drive rod; 9 – second chamber throttle control lever; 10 – channel for supplying vacuum to the pneumatic drive; 11 – rod bushing; 12 – pneumatic drive of the second chamber throttle valve
Carburetor starting device diagram 2105-1107010
1 – air damper control lever; 2 – air damper; 3 – air pipe of the first chamber; 4 – traction; 5 – starting device rod; 6 – diaphragm; 7 – adjusting screw; 8 – cavity communicating with the throttle space; 9 – telescopic rod; 10 – throttle valve drive lever; 11 – sector (antennae); 12 – first chamber throttle valve axis; 13 – lever on the axis of the first chamber throttle valve; 14 – lever connected to the air damper
Accelerator pump diagram of carburetor 2105-1107010
1 – valve screw; 2 - spray; 3 – fuel channel; 4 – bypass jet; 5 – float chamber; 6 – accelerator pump drive sector; 7 – drive lever; 8 – return spring; 9 – diaphragm cup; 10 – pump diaphragm; 11 – inlet ball valve; 12 – pump vapor chamber
The original can be found on the website [VAZBOOK.RU]
The throttle valve of the second chamber has a pneumatic drive, the air valve has a diaphragm starting device for starting a cold engine. The diaphragm-type accelerator pump with a mechanical drive supplies fuel to the first chamber.
The carburetor calibration data are given in the table Calibration data for carburetor 2105-1107010.