What voltage should the VAZ-2114 car generator produce?

Generator Basics

Electricity is generated under the influence of a magnetic field. It is produced by two main parts found in any generator:

• stator;
• rotor.

The latter is a movable element consisting of a core made of steel tips. On them, in turn, windings are strung.

The stator is a ring assembled from steel plates. There is also a coil of fairly thick copper wire inside. All of these elements are hidden in the case. Bearings are responsible for the smooth rotation of the rotor. Besides them, there is also:

• pulley;
• diode bridge;
• impellers;
• voltage regulator.

Checking the voltage on the generator

According to the operating rules, a control measurement of the voltage produced by the generator is carried out every six months. It is ideal to do this in autumn and spring (before and after cold weather). The thing is that it is during this period that the device experiences peak loads. It is important to remember that the check is done regularly and in full according to the algorithm given below.

This procedure should not be ignored, since the value of the element in question is very large. After all, if it is not able to produce electricity, then pretty soon the battery will run out, and the engine, at one far from perfect moment, simply will not start. Moreover, if the output voltage is too high, then the chance of failure of other components or the wiring itself increases, and looking for a breakdown in which will be a dubious pleasure.

The generator produces low voltage

Unlike overcharging, which is observed infrequently, owners of the “four” often encounter low voltage in the on-board network. It can be determined not only by readings on the dashboard or by measurements with a voltmeter. The most common symptoms of this problem are:

• Constantly lit battery indicator on the dashboard;
• Low voltage on the on-board computer (although it often lies a lot);
• Dim or flickering headlights and dashboard lights;
• Failure of electrical appliances or their unstable operation;
• Intermittent engine operation;
• The engine stalls while driving;
• Difficulty starting the engine or inability to start it.

Most often this occurs due to a failure of the voltage regulator or diode bridge. But the voltage can also be low due to a short circuit in the stator winding, bearing wear and some other generator failures. But, before repairing or replacing it, you need to make sure that the problem is in the generator set. Sometimes similar symptoms are caused by a faulty battery or poor wiring or oxidized terminals. In addition, the car may have powerful additional electrical equipment, such as an expensive radio, amplifier, or subwoofer. You should make sure that it is working and connected correctly. Or perhaps the generator simply does not have enough power for such consumers.

Malfunctions

The following signs indicate that there is a problem with the generator:

• the loud noise it makes;
• The battery light installed on the panel is brighter than usual;
• The lighting in the car is too bright;
• Electrical appliances do not turn on when the battery indicator goes out.

A hum or noise from the generator indicates that the bearings have become unusable. Most often, failure occurs in the front. You should not use a machine with such a malfunction - if the generator jams, then, most likely, it will completely lose its functionality. New ones, as you know, are not cheap.

Bright lighting of the lights (even when the engine is turned off) indicates that the limit voltage in the network has been exceeded.

Generator check

This procedure should be performed in the following sequence:

• the ignition is turned on (all the lights on the panel in the cabin should be on);
• the engine starts (if everything is in order with the generator, the battery indicator goes out);
• after the power plant has warmed up (90 degrees), the network must be loaded to the maximum;
• the assistant needs to ensure that the idle speed is maintained at 3.5 thousand;
• The multimeter is connected to the battery.

Normally, when fully loaded, the readings should not be lower than 13 volts.

If the voltage is less than the specified limit, the generator does not produce enough electricity.

When no problems are noticed, the measurement is carried out after the load is completely disconnected. Here the normal data is from 14.5 to 14.7 volts.

How much should a VAZ 2115 Generator produce?

Content

How to check the generator on a VAZ 2114 car

The VAZ 2114 is equipped with an electric generator 94.3701, which is installed on the injector power units with injection for modern cars of the Samara and Samara 2 series. This is a three-phase alternating current unit of right rotation (projection from the drive), it has a rectifier unit and a voltage regulator.

Design and features of using the VAZ 2114 generator

An automobile electric generator is a synchronous three-phase alternating current machine with electromagnetic excitation. It converts the mechanical energy of a running automotive power plant into the electrical energy needed to operate electronic systems and other devices and equipment that consume electricity while the engine is running. This transformation uses a rotating magnetic field.

The main working parts of a car generator are:

• the rotor is the moving part of the device
• the stator is a stationary part of an electrical machine

The stator is assembled from pieces of sheet iron insulated from each other. The generator's armature winding is laid inside the stator.

The rotor core is made of a single piece of electromechanical steel. The ends of the poles are made of sheet steel. The field coils are located on the poles, which are powered by an external DC source.

There is a housing for protection from external influences. The main workers there are prisoners. car parts Power supply. Exists:

• bearings. the rotor rotates on them;
• Working wheel;
• diode bridge;
• relay regulator;
• pulley. drive unit; he wears a belt.

The front and rear covers of the generator, which is its body, are securely attached to the starter, ensuring its immobility. The rear bearing is firmly mounted on the rotor shaft and covered with a sleeve. The front bearing is pressed against the front cover of the power unit and can only be replaced. The shaft itself rotates on bearings; the oils in them, filled at the factory, do not change.

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The winding in the stator slots is assembled according to a star circuit. And the wires are connected to a common point.

On the other hand, the phase wires are connected to the diode bridge. It contains six pieces of silicon diodes, also called "valves". There are three positive and three negative. They belong to the poles and are pressed into horseshoe-shaped aluminum plates. There are also three diode parts on the plate. The field coil is triggered through them when the power plant is started. The diode bridge is installed on the back cover. There is also a capacitor that protects against sudden flashes.

The instrument panel has a control indicator that lights up when the ignition is turned on. At this point, the voltage from the light bulb is supplied from the battery to the field coil. When the power is turned on, the winding is powered by additional diodes and the light should go out. If this does not happen after starting and the lamp continues to light, the VAZ 2114 generator does not work.

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Features of using the unit 94.3701 on the VAZ 2114

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RNN 67.3702-02 this model came to me generator

3202.3771, installed without problems, noticeable.

Check the battery charge from the generator.

After replacing the brushes. Check the battery charge.

1. The power source must not allow operation with the battery disconnected. This causes splashing with possible damage to the alternator and vehicle components.
2. Make sure that the battery plus is always connected to the power supply terminal and the battery minus. to the ground. If you mix the contacts, the diodes will receive a higher current and they will break.
3. Under no circumstances should you try an electric generator on a “spark”; the diodes will instantly fail due to overvoltage. You only need to check using special counters or near a stand.
4. The valves cannot be driven by voltages higher than 12V or by the fan, which may cause a short circuit.
5. Test vehicle wiring using a magnet or voltage greater than 12V only when the power is off.
6. If necessary, welding units or body parts are required to disconnect the wires from all terminals and connection points of the generator and battery.

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Inspection of the VAZ 2114 generator and typical faults

Before checking the generator on a VAZ 2114, it is necessary to find out what malfunctions can be detected during testing and how these malfunctions occur.

Failures occurring during operation

1. When the ignition is turned on, the instrument panel lamp does not light up and the main unit does not operate.
2. The control indicator does not light up after turning on the ignition key and does not light up after starting. The battery is low.
3. When the machine is running, the light is bright or dim. The battery is low.
4. The lamp lights up brightly when the machine is running. The battery is charging.
5. Increased noise during generator operation.

Checking the VAZ 2114 generator with a car engine

In preparation for unit testing, you need to purchase a special measuring device for monitoring the automotive electrical network. The control procedure is as follows:

• insert the ignition, turn it over and make sure that all warning lights are turned on at full power;
• start the engine. The pilot light should go out if it is bright or not running at full power, so the generator circuit is faulty;
• when the engine warms up to operating temperature, turn on all electrical appliances to create maximum load;
• To connect the meter in voltmeter mode, read in the operating instructions what voltage generator should produce at maximum load on board;
• set 3500 rpm;
• connect the meter to the battery and check the voltage, if the device is less than 13 volts, the battery is low and you need to look for a breakdown. This could be a very tight belt, a faulty regulator, worn brushes and oxidized contacts;
• turn off all devices to the maximum and find out how many volts the VAZ 2114 generator should produce When consumers are disconnected when measuring the sensor, the battery must be at least 14.7 V, if much more, the controller on the device must be replaced;
• without turning off the car, listening to how noisy generator is , if the noise level increases, the bearings will break. One reason is the tightening of the drive belt;
• turn off the car, let it cool and check how the belt is tensioned by pushing it with your finger, in one bend, a maximum of one and a half centimeters.

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Checking unit components and maintaining it

Deep instrumental monitoring of the VAZ 2114 generator includes diagnostics of the diode bridge, regulator, stator and rotor windings using a probe (this is a 12 V light bulb with a power of 3 W):

• one-way crossover diodes are used, the lamp should not light, if it is on, the diode does not work;
• when checking the regulator, the sensor connected to the brushes should go out if it rises to 16 volts, if it continues to light or, conversely, does not light at any voltage, this indicates a malfunction of the regulator;
• The control windings look for a short circuit or lack thereof. If a short circuit is detected, the stator must be replaced.

To be sure of the efficiency of your generator, you need to check it every 10 thousand kilometers and carry out regular maintenance between checks, namely:

• keep surfaces clean;
• check the fastening of the generator to the engine and the reliability of all terminal connections with wires;
• check the tension and condition of the belt;
• Check the condition of the bearings on the ear and when rotating the pulley with the belt removed.

As a recommendation, experienced drivers advise those traveling long distances to keep the alternator drive belt in the trunk between emergencies. And the driver himself took a master class with his replacement. Belts. customary law working in a desert place. Unfortunately, the car cannot move without a belt. So the stock will be out of place.

Generator voltage control

After measurements have been taken on the battery, you will also need to check the voltage directly at the generator. With the engine running, the probes are connected to its terminals. Normally it should output from 14 to 14.3 volts.

After this, a set of revolutions is made. In this case, the readings can change by no more than half a volt. In this situation, it should be noted that the generator itself, as well as the voltage regulator, are fully operational.

What generator is installed on the VAZ 2114?

Having figured out what voltage the generator on the VAZ 2114 should produce, it’s worth understanding what kind of device produces it. This domestic hatchback is equipped with a three-phase generator type 94.3701 . It consists of a stationary winding or stator, a rotor, rotor bearings, an impeller, and a pulley for putting on a belt. It also has a diode bridge or rectifier, a voltage regulator and a housing.

Russian-made devices of the KZATE brand were installed on the car from the factory. Also, on some cars of recent years of production you can find standard German Bosch. Despite the fact that domestic generators, with proper care, can be used for a relatively long time, foreign-made parts are considered more reliable. Therefore, when replacing, many owners buy products from this or another foreign brand. In addition, sometimes more powerful generators are installed. They are purchased, for example, by car audio enthusiasts, since the factory ones are not designed for such a heavy load.

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