2.6. System of injection of L-Jetronic fuel


System of injection of L-Jetronic fuel

1 — the fuel tank
2 — the fuel pump
3 — the fuel filter
4 — the distributive highway
5 — pressure regulator
6 — an electronic control unit (the micro COMPUTER)
7 — an injection nozzle
8 — a starting nozzle
9 — the adjusting screw of idling (M102.920 engine)
10 — a potentiometer of a butterfly valve
11 — a butterfly valve

12 — the air consumption measuring instrument
13 — the inclusion relay block
14 — the sensor of concentration of oxygen
15,16 — the temperature sensor
17 — the ignition sensor distributor
18 — the valve of additional air supply
19 — the adjusting screw of quality (structure) of mix of idling
20 — the rechargeable battery
21 — the ignition lock
22 — the air temperature sensor


Function chart of system of injection of L-Jetronic fuel

19 — a safety lock
20 — the ignition coil
24 — a starter
30 — the relay of inclusion of a starter
71 — the fuel pump
90 — the relay block
91 — additional resistors
97 — nozzles
98 — temperature sensor

99 — the main point of connection with "weight"
100 — the socket of an electronic control unit
101 — the relay of launch of the cold engine
102 — the switch of a butterfly valve
103 — a thermal timer
104 — the air consumption measuring instrument
105 — a starting nozzle


Details of system of injection of engines M 102

And — the 1st option
B — the 2nd option

1 — draft of the drive of a butterfly valve
2 — the case of a butterfly valve
3 — the fuel tank
4 — the fuel electric pump
5 — the fuel filter
6 — the fuel store
7 — the fuel batcher distributor
8 — the fuel pressure regulator in system
9 — the fuel supply pipeline to a nozzle
10 — a nozzle

11 — a starting nozzle
12 — the valve of additional air supply (system of injection of "LE")
13 — the valve of additional air supply (system of injection of "LE")
14 — the inlet pipeline
15 — the case of the air filter
16 — the filtering element
17 — the air duct
18 — laying


Arrangement of elements of system of injection of engines M 102

1 — the fuel batcher distributor
2 — an air flowmeter
3 — the regulator of the operating pressure
4 — the fuel pressure regulator in system
5 — a starting nozzle
6 — the conic screw of adjustment of idling

7 — the sensor of provision of a pressure head disk of a flowmeter of air
8 — the switch of a butterfly valve
9 — the valve of additional supply of fuel
10 — the sensor of temperature of cooling liquid
11 — an electronic control unit


Check of nozzles

 PERFORMANCE ORDER

  1. It is the best of all to check serviceability of nozzles by means of the control Bosch 6E84.100.202 device in provisions 6 — the 10th switch of programs. If it is absent, then serviceability of nozzles can be checked as follows:
  2. Disconnect blocks from nozzles.
  3. Include ignition.
  4. Check the voltmeter tension on both contacts of a block. The electrical wiring and an electronic control unit are serviceable if the voltmeter shows identical tension on both contacts.

    Nozzles are calculated on tension of 3 Century.

  5. Attach blocks to nozzles.
  6. Muffle the fuel supply pipeline to a starting nozzle.
  7. Remove nozzles.
  8. Disconnect a wire from the ignition distributor.
  9. Include a starter. Nozzles have to inject fuel at regular intervals.