Relay-voltage regulator VAZ-2107 is required for stable operation of all electricity consumers. It is more correct to call it a controller without adding "relay", as modern vehicles are equipped with electronic devices based on semiconductors. And the solenoid, the design is not. But the example of the mechanical controller needs to consider the work and operation of the device.
Cars used generator sets which generate three-phase alternating voltage. Then there are such conversions:
The Magnitude of the voltage depends on the frequency of rotation, as the generator output can be 10 To 1000 rpm and 30 In at 7000 rpm (if you don't use the controller).
So you need to stabilize the voltage. Method that is used in household appliances, – the installation is simple Zener diode is not suitable. The power from the generator is very high, current above 50 A. If you can find in the nature of a Zener, then it will not assign its size to the engine. The cost of production of such a device is very high. Photo relay-voltage regulator VAZ-2107 can be seen in the article.
But there is a basic requirement for the operation of any generator set:
In the stator winding produces an electric current only in the case if it is exposed to a constant magnetic field.
To create the magnetic field necessary for the rotor winding and apply voltage. And to make the magnetic field constant, it is enough to stabilize the supply circuit of the excitation winding. And it has a maximum current consumption not more than 2.6 A. It is much easier to stabilize.
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They are not in use for several decades, as they have significant drawbacks:
The Anchor is fixed with a clamp to the bimetal plate. Such relay-voltage regulator VAZ-2107 (carb injection system) was completed with the first issues of the model.
The Whole cycle of the operation can be divided into several stages:
As soon As the engine is running, the following processes:
The Process is repeated again anchor vibrating and constantly closes and opens the contacts. The voltage on the excitation coil that is supplied, then no. When the rotor rotates very quickly, in the circuit of its winding is included a small resistance – as a result, the voltage increases up to a maximum of 14.6 Volts. The amount of current in the winding increases to such a value that extends the second group of contacts of K2. When this comes into operation the second stage of voltage regulation.
All of the above processes can be applied to electronic controllers based on semiconductors. Here only functions of the power contacts took over the transistors. All can distinguish two types of electronic devices:
Some motorists don't know where is located the relay-voltage regulator VAZ-2107. On new machines it mounts directly into the housing of the generator in one unit with brushes. On older versions of the cars they were installed in the engine compartment, connected to the brush mechanism wires....
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Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."
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