Sometimes it is required to determine the condition in which the car is located without resorting to extreme funds – without analyzing it. In such cases, diagnostics are used. This process itself consists of several consistent stages: carrying out the necessary measurements, their analysis, formulation of the diagnosis and, in fact, making a decision.
The technical condition of the machine is constantly changing and depends on many factors. Therefore, the indications for diagnostics are different. With its help, you can detect malfunctions, find out the reasons for their occurrence and determine the deadline for non -proceeding. In addition, planned diagnostics are often carried out. Warned – means and armed.
The automotive diagnostics itself uses all available methods and tools that allow, according to various parameters, evaluate the condition of the car. The temperature, vibration, noise, fuel consumption, braking distance and much more are assessed and measured.
So, what are the main types of automotive diagnostics. There are only three of them:
Diagnostics by working parameters;
diagnostics according to the indicators of related processes;
Diagnosis by structural, geometric parameters.
Consider them in more detail.
At the first type of diagnosis, an imitation of the operating conditions of the car occurs. In this case, various load and speed modes are evaluated. Such diagnostics can be carried out simply during the operation of the car, or on a special stand. The parameters that are evaluated during the movement of the machine include: engine power, braking distance, fuel consumption and others.
The second type is customary to be divided into subspecies, depending on the nature of the processed processes:
Thermal method is used when it is necessary to determine the amount of heat obtained during the combustion process (as the transmission malfunction, bearing nodes and engine is checked);
Assessment of tightness – creates pressure or, on the contrary, rfigity and evaluates the speed of their fall (as transmission nodes, cylindrical groups and pneumatic drive units are diagnosed);
Assessment of various developed materials (determine, for example, cargo wear).
The third type of auto -diagnostics evaluates geometric or structural parameters – play, free course of details, their wear. Such diagnostics, unlike the first two types, takes place with a car turned off.
Diagnostics are also divided into objective, with the help of tools, and subjective. The latter includes external viewing, listening and checking odors.
For the most productive diagnosis, as a rule, not one, but a whole complex of parameters is evaluated. This allows you to get comprehensive data on the technical condition of the machine.