Technology of maintenance and repair work of the fuel supply system of the car engin

Kalit so’zlar: forsunka eskirishi, yuqori bosimli yonilg’i nasosi, drossel zoslonkasi, yonilg’i nasosi.


Introduction.
The gasoline spraying system is rapidly compressing traditional carburetor systems. The advantages of a gasoline spraying system over a carburetor system are as follows:

• 
  rationing of fuel and air separated, giving fuel differently in line with the air
  

being supplied;

• 
  proofreading the basic program of rationing by many factors (depending on the
  

mode of loads and speeds, the temperature of the air and coolant, atmospheric pressure, etc.);

• 
  ability to accurately match used gases as required by a mixture for neutralization
  

in  - probe systems;

• 
  improving the percentage indicators of economy and power of the engine by 5-
  

15%, diagnosis, self-diagnosis; [1-2].
The high cost of a sprinkler system compared to a carburetor system, the complexity of its structure and service in the process of use are the disadvantages of this system.
Gasoline injection was more commonly used by electronically controlled systems, which were adjusted by changing the cyclic (periodic) spray duration. Depending on the number of electromagnetic forsunks used, these systems are classified as:
- for each cylinder with a separate forsunk (distributed spraying);
- single forsunk (central spray)for all cylinders;
In four-stroke engines, the inclusion of Tactile Systems that spray gasoline with electromagnetic forsunks under a pressure of 0.15-0.4 Mpa is common.
Direct spraying of gasoline on the cylinders of car engines is also used in practical terms. The main reason for this is the poor operating conditions of the pharynx, the difficulty of placing it in the combustion chamber, as well as the balance of the spray pressure (3.5-10.0 Mpa).Figure 1 shows a gasoline distributed spray system [1,2].
The central spray system will also have a single forsunk that sends gasoline to all cylinders with a similar picture. The insert into the forsun is installed at the entrance to the pipeline path.