Fuel injection system «L-Jetronic»
1 - fuel tank; 2 - fuel pump; 3 - fuel filter; 4 - distribution line; 5 - pressure regulator; 6 - electronic control unit (microcomputer); 7 - injection nozzle; 8 - starting nozzle; 9 - idle adjustment screw (M102.920 engine); 10 - throttle potentiometer; 11 - throttle valve; 12 - air flow meter; 13 - relay block; 14 - oxygen concentration sensor; 15.16 - temperature sensor; 17 - sensor-distributor ignition; 18 - valve for additional air supply; 19 - quality adjustment screw (composition) idle mixtures; 20 - battery; 21 - ignition switch; 22 - air temperature sensor
Functional diagram of the fuel injection system "L-Jetronic"
19 - fuse; 20 - ignition coil; 24 - starter; 30 - starter enable relay; 71 - fuel pump; 90 - relay block; 91 - additional resistors; 97 - nozzles; 98 - temperature sensor; 99 - main connection point with «weight»; 100 - connector of the electronic control unit; 101 - cold engine start relay; 102 - throttle switch; 103 - thermal time relay; 104 - air flow meter; 105 - starting nozzle
Details of the injection system of engines M 102
A - 1st option; B - 2nd option; 1 - thrust actuator throttle; 2 - throttle body; 3 - fuel tank; 4 - fuel electric pump; 5 - fuel filter; 6 - fuel accumulator; 7 - dispenser-distributor of fuel; 8 - fuel pressure regulator in the system; 9 - pipeline for supplying fuel to the nozzle; 10 - nozzle; 11 - starting nozzle; 12 - additional air supply valve (injection system «LE»); 13 - additional air supply valve (injection system «LE»); 14 - inlet pipeline; 15 - air filter housing; 16 - filter element; 17 - air duct; 18 - gasket
The location of the elements of the injection system of engines M 102
1 - dispenser-distributor of fuel; 2 - air flow meter; 3 - control pressure regulator; 4 - fuel pressure regulator in the system; 5 - starting nozzle; 6 - conical idle adjustment screw; 7 - position sensor of the pressure disk of the air flow meter; 8 - throttle switch; 9 - valve for additional fuel supply; 10 - coolant temperature sensor; 11 - electronic control unit