Defective symptoms defective electromotor »suggestions and solutions

An electromotor is an electromechanical device that starts the engine by generating the primary torque of the elbow tree to the number of rotations per minute to create a compression ratio, in order to create the fuel mixture.

The electric motor is an electric motor. Transform electricity from the battery into a mechanical job, which acts the flywheel and the elbow tree to start the piston movement. All engines are equipped with this electromotor (appetizer).

The operational principle of the device is based on the laws of physics, which are known by the general school.

If a two -competition frame is positioned between two poles of a magnet and therefore it is currently going through it, it will start rotating. This is the simplest electric motor.

A car electomotor is a metal envelope that houses 4 magnetic nuclei. These magnets in the housing represent the electromotor stator. A coil of excitement is wrapped on the stator, which is powered by electricity in the battery. That is, it was a classic electromagnet. The usual magnets are used on modern devices.

Another part of the device is the anchor. It is a tree with a pressed steel electrical nucleus. In the grooves of the nucleus there are the frames that will revolve around the poles of magnet. The ends of the frames are connected to a collector, to whom 4 brushes can be used: two positives from the battery and two negatives, which go to the ground.

In the rear cover, closing, there is a support of arches, which constantly presses the collectible brushes to ensure contact. In addition, a sleeve or reinforcement support bearing is installed in the rear capacity.

There is an entrance contact on the metal housing. The positive battery terminal (+) is connected to this contact. The current passes through the reinforcement frames and goes to the brushes with the negative mass. The table is connected to the negative battery terminal (-). Therefore, around the reinforcement frames, a magnetic field is created and wheel.

The wire (+) of the battery provides an initial current of about 400a.

The operational principle of the electromotor step by step:

1. A) The driver begins the contact and the control voltage is applied to the Solenoid relay. The relay coil is magnetized and moves the nucleus.
2. B) The nucleus brings Bendix and the gear on the flywheel using a fork. At the end of his race, the electric motor contact bearings close.
3. C) The starting current is applied to the reinforcement envelope, which begins to rotate in the stator’s magnetic field. Right now the electromotor has started working.
4. D) The engine was started, the driver rotated the key from the starting position. The control current was no longer provided to the Solenoid relay, the contact was opened and the Bendix with the march returned to the initial position under the action of the return arch. The electromotor stopped working.

2. The symptoms of a defective electromotor

In addition, in addition to the symptoms of a defective electromotor, it is important to consider the symptoms that can announce the failure of the electromotor coil. I am:

• With the rotation of the key in contact, the electric motor does not start or start after several attempts;
• The electromotor starts at high speed after starting the engine.

The defect of the electromotor coil is one of the probable reasons for the inability to start the car.

In turn, there are several possible reasons for the failure of the coil, that is to say:

• Combustion of contacts within the relay;
• Break or burn the winding of the coil;
• The curvature of the return arch or weakening it;
• Short Circuit was formed in the winding of the coil.

3. Causes of a defective electromotor

When the electromotor does not start, very often the engine rotates too slowly, so it will not generate sufficient energy for the start.

In this case, the electrical circuit starts from the battery terminals must first be controlled.

• The battery must be well loaded;
• Mass contacts must be reliable and well protected;
• The thread at the Solenoid terminal must be intact and have good contact;
• The contact group of the contact block must work correctly.

It is worth paying attention to the things listed above, especially when the key is rotated in contact, but the retract does not work. In other words, the reinforcement does not rotate. In addition, see those mentioned above when there is an interruption of the traction relay, as well as a short circuit.

3.1. The main causes of the defect of the electromotor

The causes of the defects of the initial device are divided into two categories:

To detect an electrical problem you must make sure that:

• The car battery is not downloaded;
• The contact to the table is fixed correctly;
• Contact connections are made correctly. Also check their quality;
• The contact block component must be in order;
• All elements of the starting line from the battery must have good quality contact.

If after rotating the key in the contact switch, the anchoring element does not move, the problem usually consists of:

• Closing of the tower – in turn;
• A piece of earth thread is not caught correctly
• Short circuit of the Solenoid relay.

3.2. Causes of the main defects and the methods of their elegance

4. What can you do when the electromotor shows signs that would be defective or even broken

Expert motorists have probably found a situation in which the electromotor does not work. There may be several reasons for this. As I have already said, it is often an insufficient battery charge, the existence of problems with the retractor relay, some electrical conductivity problems or they can also be mechanical deficiencies.

In this situation, the reason must be clearly understood, because most repair works can be performed independently, without resorting to specialists.

In the situation in which you do not have the best notions necessary, it is to contact a service and, in particular, for an electrician.