What are the electrical additions in the car?

The circuit generally refers to the circuit control system of the automobile, excluding the electrical equipment such as starters and generators, and the bias is biased towards signal control, mainly referring to the system Automotive electrical mainly refers to the parts involved in electricity.

There is a difference between automotive electronic control and automotive electrical appliances, automotive electronic control refers to; Automotive electronic control systems, such as; Automobile engine electronic control system, automatic transmission electronic control system, brake anti-lock braking system, airbag system, electronic suspension system, electronic power steering system, automatic air conditioning system, etc.

Automotive electrical appliances refer to various electrical components and electrical equipment that make up the automotive electronic control system. For example; Automobile on-board computer, various sensors, actuators, automobile generators, lines, batteries, lights, horns, wipers, tape recorders, electronic locks for doors and windows, instrument panels, and other electrical equipment.

Electronic engine control system.

The engine electronic control system (EECS) is to make the engine work under the best working conditions through the electronic control of engine ignition, fuel injection, air to fuel ratio, exhaust emissions, etc., so as to improve the performance of the whole vehicle, save energy and reduce exhaust emissions.

Electronically controlled ignition.

The electronically controlled ignition device (ESA) consists of a microprocessor, a sensor and its interface, an actuator, etc. The infiltration device calculates and judges according to the engine parameters measured by the sensor, and then adjusts the ignition time, which can make the engine work at the best ignition advance angle under the conditions of different speeds and air intake, so that the engine outputs the maximum power and torque, reduces fuel consumption and emissions, saves fuel and reduces air pollution.

First, the "three elements" of automotive circuits

The circuit is composed of three parts: the power supply, the load, and the intermediate link (switch, wire, etc.), and these three parts are called the "three elements" that make up the circuit.

Second, the characteristics of automotive electrical equipment.

Automotive electrical equipment is characterized by low voltage (12V and 24V), direct current, single-wire system and negative pole tie-off.

3. The composition of automotive electrical equipment.

1. a battery.

A battery (commonly known as a "battery") is a device that converts chemical energy into electrical energy, and is a reversible low-voltage DC power source. The batteries used in automobiles today are lead-acid batteries.

The role of the battery.

1) When the engine is not running or running at low speed, the battery supplies power to various electrical equipment.

2) When there are too many electrical equipment and the power consumption exceeds the power supply capacity of the generator, the battery assists the generator to supply power to various electrical equipment.

3) The role of stabilizing voltage. The battery is equivalent to a large capacitor, which can absorb the instantaneous overvoltage in the circuit to protect the electrical equipment.

4) When the engine starts, supply power to the main electrical equipment such as the starter and ignition system.

2. Generator.

Generators are the main power source for automotive electrical equipment. During the normal operation of the car, the generator supplies power to other electrical equipment other than the starter and charges the battery. Most of the generators used in cars are three-phase alternators.

The alternator consists of a rotor, stator, brush and slip ring mechanism, three-phase bridge rectifier, bearing, fan and front and rear end covers.

Audio, speakers, headlights, central control screen, etc., so they are generally not very satisfied with the original factory, and the budget is sufficient to go back to do these, if there is no special hobby, these original factories are actually enough.

Power supply equipment and electrical equipment.

1. The power supply includes batteries, generators, and voltage regulators, which are used to supply power to the whole vehicle's electrical equipment.

The main function of the battery is to start the engine, when the engine is not working, it supplies power to the electrical equipment of the whole car.

The function of the generator is to replace the battery when the generator is running above the idle speed, to supply power to all electrical equipment except the starter, and to charge the battery at the same time.

The voltage regulator is mainly used to automatically maintain the output voltage of the generator when the engine speed and load change, so as to ensure safe operation.

There are many kinds of electrical equipment, and the functions can be divided into ignition devices, starting devices, lighting and light signal devices, instruments and auxiliary electrical devices.

The starting device is powered by the battery, which converts the electrical energy of the battery into mechanical energy to drive the engine to rotate and start the engine.

The ignition generates a high-voltage electricity in the engine operating sequence and uses a spark plug to ensure that the mixture in the cylinder is accurately ignited.

Lighting and light signal devices ensure the safety of driving at night, in rain and fog, and various types of lighting tools are installed on the car. There are mainly front lights, headlights, tail lights, license plate lights and fog lights.

In order to ensure the safety of driving and parking of the car, a variety of different signal lights can be installed on the car.

The instrument shows the status parameters of each part of the car, such as engine water temperature and oil pressure. Remaining fuel, vehicle speed, etc.

Auxiliary electrical devices include wipers, heaters, air conditioners and other auxiliary tools.

Audio installation navigation, driving recorder, reversing image, reversing radar, 360-degree panoramic image, etc.

The automobile circuit is the nerve of the whole car, and the particularity of the automobile circuit determines that it is different from other circuits in life, and is higher than these circuits, and is complicated by these circuits. This also leads to the scarcity of personnel in the automotive electrician industry, and automotive electrical repairers need more careful thinking and a richer auto repair foundation. Automobile electrical repairers go the world with a multimeter, with a bold ambition.

Automotive Electrician Courses: Transistors and their circuits, digital circuits, automotive electronic control system basics, common testing equipment for automotive electricians, principle and maintenance of gasoline engine electronic control system, principle and maintenance of automatic transmission electronic control system, principle and maintenance of anti-lock braking system and drive anti-skid rotation adjustment device, principle and maintenance of automobile air conditioning system.