Radamant 

Using of brush holders in electric motors

Brush holders are important and integral part of commutator motors. These elements are mounted in electric motors, generators and other engines which use brush systems to transfer electrical contact to rotating parts.

Functions of brush holders

1. Brush support - provide mechanical support and fixing of brushes, pressing them against the rotating commutator. This is necessary to ensure stable electrical contact and prevent wear.

2. Current distribution - holders distribute an electrical current to brushes. They ensure right direction and distribute the current in a smooth manner, which reduces wear and increases engine efficiency.

3. Adjustment and Maintenance - Brush holders may have mechanisms to adjust the pressure of brushes on a commutator. This allows engineers to configure and maintain the system based on their needs and operating conditions.

Variety of brush holders

The most common problem with Opel Easytronic, Ford Durashift EST and Honda I-Shift robotic gears occurs when the Latin letter “F” lights up on the dashboard, the box is in emergency mode and the car doesn't start. Connect a diagnostic scanner and read the error codes of the gearbox control module. In our case, there is one error: P1607-00 - malfunction of the actuator clutch. 

To access the block and download the pumping of the battery brake system, remove it.

The pump is located at the bottom of the coupling, so first of all you have to drain the oil from couplings. We loosen the filler plug, but do not unscrew it completely, because it is difficult to catch the oil from the drain. Turn off the drain plug, substitute a clean container (if you want to use the oil again) and merge. As soon as the pressure decreases, you can unscrew jellied for air intake, merged. Disconnect the pump connector from the control unit, it is the first from the cardan coupling.

Then we click on the pump cable fasteners. There are only three of them. The upper ones you have to lick on to the touch, or just pull them out from the holes in the clutch. You can practice on the latch nearest to the pump. 

       Opel Easytronic is an automatic transmission that is designed for Opel cars, its analogues are boxes such as: Ford Durashift EST ASM, designed for Ford cars, and i-Shift Honda Civic 5D, designed for Honda Civic cars. This transmission has been designed to make driving easier and reduce driver fatigue. One of the features of the Opel Easytronic is the ability to shift gears in both automatic and semi-automatic modes. In automatic mode, the system itself determines the required gear, depending on the vehicle speed and driving mode. In semi-automatic mode, the driver can independently select the desired gear using the gear lever on the steering column. 

      One of the main advantages of Opel Easytronic is fuel economy. This gearbox reduces fuel consumption by using the engine more efficiently. It is also important to note that the Opel Easytronic is a more reliable and durable gearbox than other systems. However, like any technology, Opel Easytronic has its drawbacks. One of the main drawbacks is the relatively slow speed of shifting in automatic mode, which can lead to the need for more frequent shifting in city traffic. Also, Opel Easytronic is more difficult to maintain and repair than conventional manual transmissions. The main components of Opel Easytronic are: clutch, manual transmission and electronic control unit.

A copper-graphite, or carbon brush, is a technically necessary component of an electric motor. A real user cannot touch or see these brushes, as they are hidden in the motors of the devices, which will be discussed later, but in this article we will try to reveal the principle of operation and the benefits of copper-graphite brushes.

Usually we associate the word "brush" with a toothbrush, a shoe brush, or a brush for cleaning clothes, but not with a small graphite product that makes a motor working. This name was fixed in the middle of the 19th century, when the first electric motors and generators used brushes made of bonded copper wires (copper-braided brushes). Subsequent inventions replaced them with graphite (carbon) blocks, so the concept of "brush" has survived and people continue to use it.

In nature we can meet carbon, which is the basis of the brush, in various forms such as diamond and graphite. Graphite is also produced artificially, such as charcoal used in barbecue or pencil lead. Charcoal is made by steaming and firing wood, and pencil lead is made by molding and firing powdered graphite from mines, but these products are based on carbon. Today, carbon is used in a wide range of inventions, from the manufacture of sports equipment such as tennis rackets and golf clubs to the fuselage of spacecraft, and graphite powder is the main component of carbon brushes.

        A commutator motor is a type of motor that consists of a fixed part and a moving part. The fixed part is called a stator, and the movable part is called a rotor. commutator motors can be DC, AC, and universal, all three types are widely distributed on the market and are found in household electrical appliances, construction and industrial equipment, as well as in various vehicle components, such as: motors for stoves and air conditioners, motors for parking heaters and clutch actuators, four-wheel drive pumps, ABS systems, etc.

In automotive subjects, DC commutator motors are most common, they consist of the following parts: an armature, a copper commutator, a brush assembly, bearings and a fan.

        The principle of operation of the engine is as follows: there are excitation windings in the stator, the rotor is responsible for transferring the resulting mechanical energy. A commutator is placed on the rotor shaft, with the help of which electrical energy is transmitted to the windings.

        A commutator consists of copper bars, called lamellas, which are separated from each other by mica or textolite gaskets. Each lamella is attached with its ends to the rotor winding, and on the opposite side copper-graphite brushes fit snugly to the commutator, which creates good contact. The electricity supplied through the brushes to the commutator is transmitted to the rotor through the lamellas connected to it. The constant rotation of the rotor allows electricity to be transmitted to the entire surface of the winding.

        Many customers complain that the commutators we sell sit and walk too freely on the rotor. This is absolutely normal, since, firstly, the commutator is fixed to the rotor winding, and secondly, even official motor manufacturers use various industrial adhesives to fix the commutator.