Carburetor device 21053-1107010 (VAZ-2106)

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The VAZ-21065 vehicles are equipped with the carburetor model 21053-1107010. The calibration data of the carburetor are given in the table.

The carburetor has a balanced float chamber, a system for sucking crankcase gases behind the throttle valve, and a second chamber lock. The carburetor has two main metering systems of the first and second chambers, an idle system of the first chamber with a transition system, a transition system of the second chamber, an economizer of forced idle, an economizer of power modes, a diaphragm accelerator pump with a mechanical drive and a diaphragm starting device.

The carburetor consists of two body parts: the body 8 and the cover 12 of the carburetor. The air damper 15 of the starting device is installed in the inlet neck of the first chamber. The lever 28 with two pins is rigidly installed on the axis of the air damper, one of which has a return spring. The second pin enters the shaped groove of the lever 25 of the air damper control. The adjusting screw 24 of the throttle valve opening of the first chamber and the pin of the lever 20 of the locking of the second chamber rest on the outer edge of the lever 25.

In the cover 12 of the carburetor, a needle shut-off valve 33 for fuel supply, a float 38, a fuel filter 32, a branch pipe 13 for supplying fuel to the float chamber are installed. The cover of the starting device with a diaphragm 17 assembled with a rod 26 is attached to the lug of the cover 12. An electromagnetic shut-off valve 10 with an idle fuel jet is screwed into the cover.


Large diffusers are cast in the carburetor housing 8, and small easily removable diffusers are installed, cast together with the sprayers of the main metering systems. Sprayers 16 of the accelerator pump with a ball valve, main air jets 14 and 29 with emulsion tubes 30 in emulsion wells, an intake tube of the transition system with a fuel jet are installed in the housing 8. The main fuel jets 36 are screwed into the emulsion wells. The adjusting screw of the completeness of closing of the throttle valve 34 of the second chamber, as well as the adjusting screw 19 of the amount of the idle mixture with the electric drive 27 of the limit switch of the economizer of forced idle are installed in the tides of the carburetor housing. The adjusting screw 22 of the quality of the idle mixture is screwed into the housing.

The accelerator pump cover with the drive lever 4 assembled with the pump diaphragm 6 is fastened with four screws to the lug of the housing 8, which forms the working cavity of the accelerator pump. The cover of the power mode economizer with the working diaphragm 9 is also fastened to the housing with screws. A spring acts on the diaphragm. The fuel jet 7 and the power mode economizer valve are installed in the carburetor housing under the diaphragm 9.

In the lower part of the housing 8, throttle valves 2 and 34 are mounted on axles. On the axle of the throttle valve of the first chamber, the following are mounted: lever 23 of the throttle valve drive with an adjusting screw 24 for opening the valve and with a lever 20 for locking the second chamber; lever 37 of the second chamber throttle valve drive; return spring and cam 5 of the accelerator pump. On the axis of the throttle valve of the second chamber, the lever 35 of the throttle valve is installed.

The second chamber lock prevents the second chamber throttle valve from opening in any engine operating mode unless the air damper is fully open. The lock prevents the second mixing chamber from operating when the engine is not warmed up.

Note.
1. The nominal fuel jet consumption is determined by the standard jet using a special method. It is not subject to control during operation.
2. The marking of the jets is determined by the flow rate, which is measured using micrometers. The micrometers are adjusted using standard jets.

(The article is copied from the website: VAZbook.ru)