1. Air flow meter. 2. Support plate (disk). 3. Starting fuel valve. 4. Injector. 5. Idle mixture adjusting screw. 6. Safety switch. 7. Temperature switch. 8. Additional air spool. 9. Fuel metering valve. 10. System pressure regulator. 11. Damper. 12. Fuel filter. 13. Warm-up regulator. 14. Fuel accumulator (storage device). 15. Fuel pump. 16. Intake damper.
The K-Jetronic unit is a mechanical petrol injection unit that continuously injects fuel into the intake manifold in front of the intake valves.
Fuel from the tank is first supplied to the fuel storage tank, and then through the filter to the fuel distributor.
The fuel pump relay powers the fuel pump and supplies power to the cold start injector at engine start and while the engine is running. The relay removes power from the fuel pump when the ignition is turned off and when ignition pulses cease to arrive (the engine stalled and the ignition was on).
The warm-up regulator enriches the fuel mixture during the warm-up phase.
Since September 1981, vehicles have been equipped with a high engine speed switch when idling, which helps save fuel and ensures smoother acceleration of the vehicle.
(Original can be found on the website: mercedesman.ru)
The high engine speed switch, when the microswitch on the throttle linkage is turned off, supplies fresh air to the engine, bypassing the air flow meter, as a result of which the air flow meter flap moves to the zero position and blocks the fuel supply.