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BMW 3 series E46

Since 1998 of release

Repair and car operation



The BMW of 3 series Е46
+ Cars BMW 3 (Е46)
+ Current leaving and service
+ The engine
+ Systems of cooling, heating
- Power supply systems, injection and release
   Security measures and rules of observance of cleanliness at work with fuel system
   Removal and installation of the gauge of a stock of fuel / the fuel pump
   Check of the gauge of a stock of fuel
   + The power supply system of petrol engines
   - System of injection of fuel of the petrol engine
      The general information and security measures at work
      Principle of work of system DME
      Removal and installation of injectors
      Check of system of injection of the petrol engine
      Check and adjustment of turns of idling and concentration WITH
   + The power supply system of diesel engines
   + System of release of the fulfilled gases
+ Engine electric equipment
+ РКПП and трансмиссионная a line
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Electric equipment schemes





System of injection of fuel of the petrol engine

The general information and security measures at work

The car is equipped by an electronic digital control system of the engine (DME/BOSCH-MOTRONIC).
The electronic control system of the engine allows to realise following advantages:

- Exact dosage of fuel in any mode of operation that provides the small expense of fuel at high capacity.
- Reduction of the maintenance of harmful substances in the fulfilled gases thanks to exact dispensing of fuel and application каталитического the converter.
- Self-diagnostics of a control system by the engine, provides possibility of fast troubleshooting. The control system of the engine has memory of malfunctions. If defect it is brought in memory of the device while in service comes to light. If the engine has malfunctions by means of the special device it is possible to deduce their list, allowing to reveal and eliminate defect independently. Address to Section Diagnostics of malfunctions. Work it is desirable to spend HUNDRED in conditions.

The engine management block represents the minicomputer with high speed. It defines optimum time of injection and quantity of injected fuel. Thus there is a coordination of work of the block of management with other systems of the car, for example, to a control system of a check point or blocking from stealing.

Elements of a control system of the engine keeps the high working capacity for a long time and practically does not demand service. Replacements at carrying out of maintenance service demand only the air filter and spark plugs. Serious works on adjustment and repair demand application of difficult diagnostic devices. Address to Section Diagnostics of malfunctions.

Adjustment of number of turns of idling and concentration WITH within the limits of maintenance service carrying out is not required.

Security measures at work with a control system of the engine / the petrol engine


The fuel system is under pressure! At system opening fuel emission is possible. Therefore the flowed out fuel is necessary for wiping a rag. Gasoline steams are poisonous and горючи. Use goggles. Watch good ventilation of a workplace. Have on call the fire extinguisher.

For an exception травмирования and-or damages of system of injection and ignition the following is necessary to observe people:

- Do not concern and do not disconnect ignition wires at the working engine or at the included starter.
- Disconnect and attach pipelines of system of injection and an ignition wire, and also electric wires of devices of measurement only at the switched off ignition.
- It is not supposed to work with electronic system of ignition to people with a warm stimulator.
- At compression check it is not supposed to make fuel injection.

At work with injection system it is necessary to observe the general safety rules and cleanliness, address to Section of the Security measure and a rule of observance of cleanliness at work with fuel system.