Hyundai Elantra

since 2000-2004 of release

Repair and car operation

Elantr's Hyundai
+ Petrol engines 1,6, 1,8 and 2,0 of l
+ Diesel engine of 2,0 l
+ greasing System
+ cooling System
- Fuel system
   + Fuel system of petrol engines
   - Fuel system of diesel engines
      General information about system of injection of "Common Rail"
      Characteristics of system of injection
      Control injection of fuel
      Main injection of fuel
      Additional injection of fuel
      Reduction of toxicity of the fulfilled gases
      Fuel system Common Rail
      EDC control system
      Management of the maximum quantity of air arriving in the engine
      The active shock-absorber reducing fluctuations of frequency of rotation of a cranked shaft of the engine
      Engine switching off
      Glow plugs
      Removal and nozzle installation
      Installation of the fuel pump of a high pressure
      Measuring instrument of a consumption of air (Air flow sensor – AFS)
      The sensor of temperature of cooling liquid (ECT)
      Sensor of provision of a camshaft (CMP)
      Sensor of an angle of rotation of a cranked shaft
      The sensor of pressure of fuel in the accumulator of a high pressure (RPS)
      Sensor of temperature of fuel (FTS)
      Valve of adjustment of pressure
      Search and elimination of malfunctions
+ Monitoring systems and decrease in toxicity of the fulfilled gases
+ ignition System
+ System of preliminary heating of the diesel engine
+ Coupling
+ Mechanical transmission
+ Automatic transmission
+ Power shafts, forward and back axes
+ Suspension bracket
+ Steering
+ Brake system
+ Body
+ air Central air
+ Electric equipment
Electric circuits


ECU estimates the signals received from external sensors, and limits them to admissible level of tension.
On the basis of entrance data and the characteristics which have been written down in memory of the microprocessor, ECU calculates time and the moment of injection of fuel and transforms these parameters to target signals which are used for management of fuel nozzles. Besides, target signals also are used for management of various elements and systems, such as a drive of system of a retsirkulyatsiya of the fulfilled gases, management of the relay of the fuel pump, the fan of a radiator, preliminary heating of the engine and air central air. Executive mechanisms are protected from short circuit and break of an electric chain, thus any damages register in memory of the microprocessor. Many target signals are used in other systems of the car.

The greatest loading for the weekend ECU cascades render fuel nozzles. The current of the target cascade creates a magnetic field which is put to a part of a nozzle with the fuel being under a high pressure in the solenoidal valve of a nozzle. For ensuring exact amount of injected fuel opening of a nozzle should occur very quickly that demands giving of ECU of a high voltage. The chain of management of a fuel nozzle has two phases: the opening phase, being characterized consumption of a big current, and the deduction phase, being characterized consumption of a small current.

ECU meets high requirements relatively:

– influences of surrounding temperature within–40... +85°C;
– stability to influence of fuel and lubricants;
– stability to moisture influence;
– mechanical loadings.

ECU also possesses electromagnetic compatibility (EMC) and has low level of radiated hindrances.