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WIPER MOTOR FOR SOUTH AMERICA

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WIPER MOTOR

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BLOWER MOTOR

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FAN MOTOR

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ABOUT HUHONG

Wenzhou Huhong Automobile Electric Appliance Co., LTD. (formerly Ruian Hongming Automobile Electric Appliance Co., LTD.) was founded in 1985, the company is located in Wenzhou Pingyang Wanquan Industrial Zone. The company covers an area of 10,000 square meters, building area of 16,000 square meters. It has 160 employees, including 10 senior engineers. It is a modern enterprise integrating research and development, production and sales, and has its own independent foreign trade department and cooperative import and export company, which has rich experience in import and export business.

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1985

DATE OF ESTABLISHMENT

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10000

FLOOR AREA(m²)

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160

EXISTING STAFF

NEWS

Focus on R & D and production of motor for more than 30 years.

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03-13

2023

Principles and Maintenance of Automotive Circuits

One, understand the general sequence of automotive circuit diagrams 1 . The power supply is limited to the wires of the electric fuse or switch is the common front of the electric equipment. It is generally drawn on the upper part of the circuit diagram in the circuit schematic diagram. 2 . The circuit diagram of the standard drawing method, the contact of the switch is in the zero position or dynamic. That is, the switch is in the off state or the relay coil is in the non-energized state. The on and off of the elements with switching characteristics such as transistors and thyristors depends on the full house situation. 3. The characteristics of the automobile circuit are dual power supply, single wire system, each electrical appliance is connected in parallel with each other, and relays and switches are connected in series in the circuit. 4. Most of the power-consuming equipment passes through the fuse and is cherished by the fuse. 5. The whole vehicle circuit is composed of several independent circuits according to the effectiveness and working principle. This can solve the problem of the huge and chaotic circuit of the whole vehicle and the difficult analysis of the title. Nowadays, the entire automobile circuit is generally drawn according to the various circuit layouts, such as the power supply system, the starting system, the ignition system, the lighting system, the signal system, etc. These unit circuits have their own characteristics. The principle is thoroughly understood, and it is easy to understand the circuit of the whole car. 2. Responsible for reading circle notes Responsible for reading the legend, understanding the title and technical type of the circuit diagram, and want to know how long it will take to learn car maintenance. Understand the meaning of graphic symbols and the correlation between equipment components and graphic symbols one by one, so that you can quickly and accurately recognize pictures. Three, driving the circuit In electricity, the circuit is the most basic, most important, and simplest concept. Any complete circuit is composed of power supply, electrical appliances, switches, wires, etc. Regarding the DC circuit, the current always goes from the positive pole of the power supply, and reaches the consumer through wires, fuses, and switches. Then go through the wire (or ground) and return to the negative pole of the same power source. In this process, only one link needs to be faulty, and this circuit will not be accurate and useful. For example: How long does it take to learn how to repair a car from the positive pole of the power supply? After a certain electrical appliance (or another electrical appliance), it finally returns to the positive pole of the same power source. Since the potential difference (voltage) of the power source is only between the positive and negative poles of the power source, the same electrode of the power source is equipotential. There is no voltage. This kind of "from positive to positive" approach does not produce current. In the car circuit. Generators and batteries are both power sources. When looking for a circuit, they should not be confused and cannot be driven from the positive pole of a power source. After going through a number of electrical equipment, return to the negative pole of another power supply, this way. No real path will be formed, and no current will appear. Take a look at car circuit repair training. So it must be exaggerated. The loop refers to driving from the positive pole of a power source, passing through the electrical appliances, and returning to the negative pole of the same power source.

03-13

2023

Common diagnostic methods for automobile circuit and electrical faults

There are many diagnostic methods for car circuit and electrical failures. The following car repairs will give you a summary. As for when to use which diagnostic method, you will know some more after reading it, and those who don’t understand will consider it carefully. 1. Intuitive diagnosis method Intuitive diagnosis method is the first/step of repairing automobile electrical appliances, and it is also a simple step. It only depends on the direct feeling and experience of the inspector to check and eliminate the fault. When a certain part of the car's electrical system fails, there will be abnormal phenomena such as smoke, sparks, abnormal noise, burnt smell, and high temperature. Through the sensory organs of the human body, the appearance of automobile electrical appliances can be inspected by the methods of looking, smelling, asking, cutting, and smelling to determine the location of the fault. For maintenance personnel with certain experience, some more complicated faults can be found, which greatly improves the speed of maintenance. For example, when a car is driving, when the turn signal switch is turned on, it is suddenly found that the turn signal light and the turn indicator light are not on. Touching it with your hand, it feels that the flash relay is hot, indicating that the flash relay has been burned out. When electrical components are working normally, they should have a suitable working temperature. If the temperature is too high or too low, it will mean a fault. For example: when the starter is running weakly, if the battery poles are in poor contact with the wires, they will feel hot when touched. 2. Diagnosis method of grounding fire test It is a method to judge the fault according to the intensity of the spark generated by removing a wire end of the electrical equipment to test the metal part of the car. This method is relatively simple, and is a simple and convenient method often used by the majority of automotive electronics and electrical maintenance workers. Systems that use electronic equipment are generally not allowed to use this method, and must be carried out in accordance with certain methods with the help of some instruments and tools. Otherwise, the overcurrent generated by the "fire test" will bring unexpected damage to certain circuits and components.

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