Hendaj Elantra
Petrol engines 1,6, 1,8 and 2,0 l
The diesel engine of 2,0 l
Greasing system
Cooling system
- Fuel system
    Fuel system of petrol engines
   - Fuel system of diesel engines
      Specifications
      The general data on injection system «Common Rail»
      Characteristics of system of injection
      Control injection of fuel
      The main injection of fuel
      Additional injection of fuel
      Reduction of toxicity of the fulfilled gases
      Fuel system Common Rail
      Control system EDC
      ECU
      Management of a 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 deenergizing
      Candles накаливания
      Removal and atomizer installation
      Installation of the fuel pump of a high pressure
      Measuring instrument of the expense of air (Air flow sensor – AFS)
      The gauge of temperature of a cooling liquid (ECT)
      The gauge of position of a camshaft (CMP)
      The gauge of an angle of rotation of a cranked shaft
      Atomizers
      The gauge of pressure of fuel in the high pressure accumulator (RPS)
      The gauge of temperature of fuel (FTS)
      The 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
The electric equipment
Electric schemes


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Control injection of fuel

Control injection of fuel can be made in position of a cranked shaft 90 ° to ВМТ. If the beginning of injection of fuel occurs less than 40 ° to ВМТ, fuel can be postponed on a surface of the piston and walls of the cylinder and to lead to its undesirable dissolution in engine oil. At control injection a small amount of diesel fuel (1 … 4 sm3) move in the cylinder in "preliminary conditional" chamber of combustion.

Efficiency of combustion of fuel can be improved and reached following effects:

– Pressure of compression insignificant to start reaction and incomplete combustion of fuel that, in turn, leads:

    To delay of ignition of the main injection of fuel; To pressure reduction at combustion of fuel and to smoothing of peaks of pressure (softer combustion).

These effects reduce noise from combustion, reduce the expense of fuel and in many cases reduce toxicity of the fulfilled gases. In case of speed of unloading without control injection of fuel according to compression the insignificant increase in pressure before ВМТ which reaches a maximum rather sharply in a point of the maximum pressure takes place only.

The sharp increase in pressure together with abrupt peak brings the considerable contribution to noise creation at fuel combustion in the diesel engine. As is shown in curve speed of unloading with control injection, pressure nearby ВМТ reaches some higher value and pressure increases with smaller speed. As it reduces an ignition delay, control injection brings the indirect contribution to formation of a twisting moment of the engine. The specific expense of fuel can increase or decrease as function of the main injection and time between control and main injection of fuel.

Lifting of the needle valve of an atomizer and speed of unloading without control injection