1. Starter adjusting screw. 2. Lever pin 24 entering groove in lever 3. 3. Choke control lever. 4. Choke drive rod fastening screw. 5. First chamber throttle opening adjusting screw. 6. First chamber throttle lever. 7. First chamber throttle shaft. 8. Second chamber throttle drive lever. 9. Idle mixture quantity adjusting screw. 10. Second chamber throttle shaft. 11. Second chamber throttle lever. 12. Crankcase ventilation pipe into carburetor rear-throttle space. 13. Second chamber throttle valve. 14. Second chamber transition system outlet openings. 15. Throttle body. 16. Second chamber main metering system nozzle. 17. Small diffuser. 18. Second chamber transition system fuel jet housing. 19. Accelerator pump nozzle. 20. Carburetor fuel supply pipe. 21. Economizer nozzle. 22. Choke valve. 23. Starter rod. 24. Choke lever. 25. Starter cover. 26. Lever pin 24, acting from rod 23 of the starting device. 27. Choke shaft. 28. Carburetor cover. 29. Tube with economizer fuel jet. 30. Fuel filter. 31. Needle valve. 32. Emulsion tube of the second chamber. 33. Float. 34. Main fuel jet of the second chamber. 35. Bypass jet of the accelerator pump. 36. Throttle valve drive lever. 37. Accelerator pump drive lever. 38. Accelerator pump diaphragm. 39. Idle mixture quality (composition) adjusting screw. 40. Vacuum intake pipe of the spark advance vacuum regulator. 41. Carburetor housing. 42. Electromagnetic shut-off valve. 43. Adjusting screw for additional air of the factory idle system adjustment. 44. Starter diaphragm.
The VAZ-1111 and VAZ-1113 cars are equipped with a 1111-1107010 emulsion-type carburetor, two-chamber, with a falling flow, with sequential forced opening of the throttle valves. The throttle valves are opened from the carburetor control pedal in the car's interior.
The carburetor has a balanced float chamber, a system for extracting crankcase gases into the throttle space of the second chamber, two main metering systems, a transition system and an idle system of the first chamber with an electromagnetic shut-off valve, a transition system of the second chamber, an economizer, a diaphragm accelerator pump, an inertial economizer, and a diaphragm starting device.
The carburetor is installed on the intake pipe using four studs and secured with nuts.
The carburetor consists of three body parts: carburetor body 41, carburetor cover 28 and throttle body 15.
The cover 28 of the carburetor has the inlet necks of the first and second mixing chambers, a well for the passage of air to the main air jets of the main metering systems and float chamber balancing channels connecting the float chamber with the cavity behind the filter element of the air filter. The air damper 22 is installed in the neck of the first chamber. The lever 24 of the air damper has two pins, on one of which a spring is installed that closes the air damper. The second pin 2 enters the groove of the lever 3 of the air damper control. The groove has a certain profile. The lever 3 is hingedly installed on the cover of the carburetor and is connected by a rod to the handle in the passenger compartment of the car.
The carburetor cover is fitted with tubes with fuel jets of the economizer and inertial economizer. The cover contains channels of the inertial economizer, idle system, economizer and channels of the starting device. The cover 25 of the starting device with the adjusting screw 1 and the diaphragm 44 of the starting device assembled with the rod 23 of the device is fixed on it. A spring is installed under the diaphragm 44.
The carburetor cover contains a needle valve 31 for fuel supply, a float 33, a fuel filter 30 and a branch pipe 20 for supplying fuel to the carburetor. The float and the needle valve provide a constant fuel level in the float chamber. The level after pumping fuel into the chamber using the manual pumping lever and then removing the carburetor cover together with the float should be 22...24 mm from the upper plane of the carburetor body. The fuel level is adjusted by bending the tongue of the float lever.
A sealing gasket is installed between the cover and the carburetor body.
In the body 41 of the carburetor, large diffusers are cast in its two chambers and easily removable small diffusers 17 are installed, manufactured together with the sprayers of the main metering systems and the sprayer of the inertial economizer. The channels of the main metering systems, the idle system, the transition systems, the inertial economizer, the starting device and the accelerating pump are made in the body.
The carburetor body contains sprayers 19 with an accelerator pump valve, main air jets with emulsion tubes 32, main fuel jets 34, an idle fuel jet with an electromagnetic shut-off valve 42, a body 18 with a fuel jet of the transition system of the second chamber, air jets of the idle system and the transition system of the second chamber, a bypass jet 35 and a ball valve of the accelerator pump.
Fuel and air jets are marked (for example, 95 or 170), which indicates the diameter of the nozzle hole (0.95 mm or 1.75 mm). The marking is applied to the upper plane of the jet head or cylindrical belt. Jet diameters are specified in the carburetor calibration data table. It should be borne in mind that the plant is constantly improving the carburetor design and some data may change.
The cover with the drive lever 37 and the diaphragm 38 of the accelerator pump are fastened with four screws to the lug of the carburetor body, which forms the working cavity of the accelerator pump. The accelerator pump is driven by a cam on the axis 7 of the throttle valve of the first chamber. The adjusting screw 43 of the additional air of the factory adjustment of the idle system is installed in the lug of the carburetor body.
In the housing 15 of the throttle valves, the valves of the first and second chambers are installed. On the axis 7 of the throttle valve of the first chamber, the lever 6 is rigidly installed with a tendril entering the groove of the lever 8 of the throttle valve drive of the second chamber. The lever 8 is installed on the axis 7 freely and is connected to a spring that ensures the closing of the valve 13. On the axis 7, the throttle valve opening lever with the adjusting screw 5 is rigidly installed. To the opposite end of the axis 7, the lever 36 of the throttle valve drive with the cam of the accelerator pump is welded. On the axis 10 of the throttle valve of the second chamber, the lever 11 is rigidly installed with a slot for the pin of the lever 8.
When turning the lever 36, the throttle valve of the first chamber opens, after turning the valve by 2/3 of the full angle of rotation, the antenna of the lever 6, acting on the lever 8 with the pin, turns the lever 11 and opens the throttle valve 13 of the second chamber. The full opening of the throttle valves will occur simultaneously.
The throttle body contains channels for the idle system and the transition system of the second chamber. The tide of the body contains an adjusting screw for the quantity of the idle mixture. In a separate body, fixed to the throttle body, there is an adjusting screw 39 for the quality (composition) of the idle mixture and a branch pipe 40 for taking in the vacuum of the ignition advance vacuum regulator.
The throttle valve body is fitted with a pressed-in branch pipe 12 for sucking crankcase gases into the carburetor's throttle space. The calibrated hole with a diameter of 1.0 mm, which goes into the throttle space, does not have a noticeable effect on the mixture leaning with the throttle valves closed in idle mode.