BMW 5 series E39

Since 1996-2001 of release

Repair and car operation

+ Introduction
+ The maintenance instruction
+ Current leaving and service
+ The engine
+ Systems of cooling, heating
- The power supply system and release
   + The power supply system
   - System of injection of the petrol engine
      Memory of malfunctions
      Security measures and rules of observance of cleanliness at work with injection system
      Work of system of injection
      Check of systems of ignition and injection
      Adjustment of a drive of gas
      Removal and installation of a branch pipe throttle заслонки
      Removal, check and installation of the valve of adjustment of idling
      Check, removal and installation of the gauge of temperature
      Check of injectors
      Removal and installation of injectors
   + The power supply system of the diesel engine
   + System of release of the fulfilled gases
+ Engine electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Electric equipment schemes
+ System of onboard diagnostics

System of injection of the petrol engine

The general data

The block diagramme of system of injection Motronic (DME)

1 — an adsorber
2 — запорный the gate
3 — the valve of ventilation of a fuel tank
4 — a regulator of pressure of fuel
5 — an injector
6 — задатчик pressure
7 — the ignition coil
8 — the position gauge
9, 10 — positions are absent
11 — a measuring instrument of weight of air
12 — the management block
13 — the gauge of position throttle заслонки

14 — an idling regulator
15 — the gauge of temperature of air
16 — the valve рециркуляции the fulfilled gases
17 — the fuel filter
18 — the detonation gauge
19 — the gauge of number of turns
20 — the gauge of temperature of the engine
21 — the oxygen gauge
22 — diagnostics tip
23 — diagnostics lamp
24 — the gauge of differential pressure
25 — the fuel pump

Petrol engines BMW have control system Bosch-Motronic. It is the combined electronic system of ignition and the injection, designated as Digitale Motor-Elektronic (DME). Management of ignition and injection systems is carried out by the general block of management. In the present Chapter the injection system is considered.

System DME stably works for a long time and does not demand service. Necessity under repair arises extremely seldom.