HS code-driven landed cost estimation

List of Contents of this article:

• 1, What is the maintenance process design of the electronic control system of automobile engines?
• 2, Engine of Automobile Knowledge Collection Series
• 3, Basic knowledge and maintenance
• 4, Catalogue of Automobile Engine Structure and Maintenance
• 5,Automotive Engine Construction and Maintenance
• 6 、 Automobile engine structure and maintenance?

What is the maintenance process design of the electronic control system of automobile engines?

In the electronic control system, it is not the ECU, sensor and actuator that has more faults, but the plug-in.Due to looseness, desoldering, ablation, corrosion and dirt, the connector often has poor contact or instantaneous short circuit. Therefore, if something goes wrong, don't replace the electronic device easily, but check the condition of the connector first.

A few points should be paid attention to when handling the battery during the maintenance of the electronic control system. It is strictly forbidden to disconnect the battery from the circuit when the engine is running at high speed. If this is the case, it is easy to generate an instantaneous overvoltage, damaging the microcomputer and the sensor.

The communication between the maintenance staff and the car owner is convenient for the staff to further narrow the scope of troubleshooting and help them more accurately clarify the cause of the fault. If the car fault is a simple external engine fault, the fault diagnosis only needs to carry out an intuitive external inspection of the engine system to quickly find the fault and deal with it properly.

The electronic control unit should be inspected with special instruments, and disassembly and maintenance are generally not allowed in maintenance operations. Before disassembling and repairing the fuel system, the battery ground wire should usually be removed to prevent damage to parts. However, after removing the battery line, the fault memory code stored in the electronic control unit will be automatically cleared.

The development and application of the automobile fault self-diagnosis system provides convenience for timely fault detection and repair faults. In most cases, car maintenance personnel can determine the possible location and cause of the failure by retrieving the fault code.

The structure and maintenance of the electronically controlled engine of the automobile. If the fault light is not on, it means that the electronic control system has no fault. (×) In some electronic control systems, when the ignition switch is turned on, even if the engine is not started, the oil pump can still run for a short time in order to establish the oil pressure and facilitate the engine to start.

Engine of Automobile Knowledge Collection Series

Adjacent cylinders of horizontally opposed engines Vertical arrangement (the bottom of the piston is outward), and the angle between the two cylinders is 180°, but it still has an essential difference from the 180°V engine.

Basic knowledge of car engine maintenance Daily maintenance Check the height of the oil surface inside the oil sup, and if it is not enough, it should be added to the specified line. Check the amount of cooling water. Check the stability of the engine connection and the tightness of the accessory device. Keep the engine clean and do the necessary scrubbing.

The device required to complete the starting process is called the starting system of the engine.

Automobile Knowledge: Automobile Engine in the History of Automobile Development Today, Dr. Cha will talk to you about the history of automobile development and the "heart" engine of automobiles. First of all, we will take you into the history of automobiles. The Germans invented the automobile. In 1867, Otto, a German engineer, installed the world's first resurgated four-stroke engine.

Basic knowledge and maintenance

1. Reasonable maintenance. The car maintenance cycle refers to the interval mileage or time of car maintenance. High maintenance frequency is not a bad thing, which can more effectively ensure the performance of the vehicle.

2. Have a certain amount of basic theoretical knowledge of automobiles, and have strong automobile quick repair and maintenance, repair, beauty maintenance, body repair ability and preliminary automobile diagnosis and detection ability. Understand the workflow of relevant maintenance and chain technical service enterprises, and be able to engage in whole vehicle maintenance, automobile sheet slate spraying maintenance, automobile beauty decoration and other work.

3. Air filter The engine needs to absorb a large amount of air during the working process. If the air is not filtered, the dust in it will accelerate the wear of the piston group and cylinder. Larger particles enter between the piston and the cylinder, which will also cause a serious "cylinder pulling" phenomenon.

Catalogue of Automobile Engine Structure and Maintenance Illustrations

The following structural diagram of basic engine parts is very detailed, which is very helpful for novices in automobile maintenance. If you don't know the basic parts of the engine, you might as well learn about it and improve your knowledge of cars.

Children who have just learned engine maintenance are blessed. Share a set of pictures of car engine structure diagrams. The color of this group of car engine structure diagrams looks very intuitive. Take a little time to read slowly, immediately understand the internal structure of the car engine, and lay the foundation for future engine overhaul. No nonsense, please see below.

Automotive Engine Structure and Maintenance (Second Edition) Chapter 1 General Theory of Automobile Engine Learning Objectives: Be able to correctly describe the basic structure, function and definition of common terms of the engine;Be able to briefly describe the basic working principle of the engine; be able to correctly describe the overall structure of the engine.

Automobile engine construction and maintenance

1. During the driving process, the engine lubricant consumption is also higher than usual. Driving for a period of mileage, the dashboard will soon show that the amount of lubricating oil is insufficient, which is usually Because of the following 3 reasons: First, it may be due to a problem with the sealing of the engine piston, resulting in an excessive gap between the piston and the cylinder wall, resulting in oil burning.

2. First of all, the engine is composed of two major mechanisms and five major systems: crank connecting rod mechanism. The crank connecting rod mechanism is the main moving part of the engine to realize the working cycle and complete the energy conversion. It is composed of a fusele group, a piston connecting rod group and a crankshaft flywheel group.

3. Basic knowledge and maintenance. The basic structure and principle of the engine. Automobile engines, also known as automobile engines, mainly use gasoline engines and diesel engines; they are divided into four-stroke engines and two-stroke engines, which can be divided into four-stroke internal combustion engines according to the number of strokes required to complete a working cycle. And the second-stroke internal combustion engine.

4, b) Supercharged engine: In order to increase the power, a supercharger is installed on the engine, so that the gas entering the cylinder is compressed in advance by the compressor before entering the cylinder. According to the number of cylinders a) single-cylinder engine b) multi-cylinder engine: according to the arrangement of cylinders, it can be divided into i. In-line vertical engine: all cylinder centerlines are in the same vertical plane.

5. The above part is the structure of the car engine.Construction: The engine is the power device of the car. According to the fuel, there are two types of engines: gasoline and diesel engine; according to the working mode, there are two-stroke and four-stroke. Generally, the engine is a four-stroke engine.

Automobile engine structure and maintenance?

1. The automobile engine is composed of a fuselage, crank connecting rod mechanism, gas distribution mechanism, cooling system, lubrication system, fuel system and ignition system (diesel engine does not have an ignition system), etc. Cooling system: generally composed of water tank, water pump, radiator, fan, thermoster, water temperature gauge and water release switch.

2. There are mainly two types of automobile engines: gasoline engine and diesel engine. Gasoline engines are mainly composed of two major mechanisms and five major systems. The two major mechanisms include crank connecting rod mechanism and gas distribution mechanism;The four major systems include supply system, lubrication system, cooling system, start-up system and ignition system, while diesel engines do not include ignition systems.

3. Basic knowledge and maintenance. The basic structure and principle of the engine. Automobile engines, also known as automobile engines, mainly use gasoline engines and diesel engines; they are divided into four-stroke engines and two-stroke engines, which can be divided into four-stroke internal combustion engines according to the number of strokes required to complete a working cycle. And the second-stroke internal combustion engine.

4. Second, it may be that the parts of the engine are seriously worn out, so that the gap between the parts is too large, resulting in abnormal lubricating oil consumption. Third, the lubricating oil used by individual engines does not meet the standard, resulting in abnormal lubricating oil consumption.