MERCEDES-Benz

1. the ignition coil is able to turn low voltage into high voltage on the car, because there is the same form as the ordinary transformer, the primary coil and the secondary coil turns ratio is larger.
2. but the ignition coil working mode is different from the ordinary transformer, the ordinary transformer can work continuously, and the ignition coil is intermittent work, it according to the different speed of the engine at different frequencies for repeated energy storage and discharge. 3. when the primary coil is switched on, with the growth of the current around the generation of a strong magnetic field, the iron core stored magnetic field energy, when the switch device makes the primary coil circuit disconnected, the primary coil magnetic field rapidly attenuated, secondary coil will induce a high voltage.
4. The faster the magnetic field of the primary coil disappears, the greater the current at the moment of current disconnection, the greater the turns ratio of the two coils, the higher the voltage induced by the secondary coil.

Air intake pipe form an integral part of the cooling system. The main function is to transfer the coolant and assist the coolant to dissipate heat from the engine. The air intake tube are divided into: upper turbo intake hose, lower car air intake hose.

Intake duct hose form an integral part of the cooling system. The main function is to transfer the coolant and assist the coolant to dissipate heat from the engine.
The air intake duct hose are divided into: upper air intake duct, lower air intake duct (connecting the water tank and the water pump end), warm air water pipes (for air conditioning), iron water pipes, etc. Each of these pipes has its own
function, but generally what can be seen is mainly the upper and lower water pipes in the cooling system.

The method to distinguish whether the thermostat assembly is good or bad is:
1. According to the method of judging whether the parts of thermostat assembly is good or bad according to the car, it can be judged directly in the car without removing the thermostat from the engine, and judge through the temperature difference between the upper and lower water pipes;
2. The engine coolant thermostat assembly is disassembled and inspected, and the temperature at which the thermostat is opened is measured by boiling the thermostat after being removed from the engine. Automobile thermostat is a valve that can control the flow path of engine coolant. This product automatically adjusts the amount of water entering the radiator according to the temperature of the cooling water to ensure that the engine works within a suitable temperature range and can save energy.

1. Functional characteristics of multi-link independent suspension: multi-link suspension can not only ensure a certain degree of comfort, but also make the wheel and the ground as vertical as possible and reduce the tilt of the body as much as possible due to the large number of connecting rods. It is possible to maintain the ground adhesion of the tire. Its handling performance and double fork arm suspension are closely matched. Because of ample space, and pay attention to comfortable performance and control stability, most high-gear cars use multi-link suspension. It can be said that multi-link suspension is the best gear for high-gear cars.
2. The material characteristics of multi-link independent suspension, multi-link suspension structure is relatively complex, the material cost, research and development experiment cost and manufacturing cost are much higher than other types of suspension, and its space is large, small and medium cars for cost and space considerations rarely use this suspension;
3. the role of multi-link independent suspension: as the name suggests, multi-link suspension is composed of three or more connecting rod, and can provide multiple directions of control, so that the tire has a more reliable driving track of the suspension structure. However, nowadays, because the three-link structure can no longer meet people's higher pursuit of chassis control performance, only the more accurate structure, more accurate positioning of the four-link and five-link suspension can be called the real multi-link type, the two suspension structures are usually applied to the front wheel and the rear wheel respectively. Take the five-link suspension commonly used in the rear wheel as an example. The five connecting rods refer to the main control arm, the front positioning arm, the rear positioning arm, the upper arm and the lower arm respectively. Among them, the main control arm can play the role of adjusting the front bundle of the rear wheel, so as to improve the stability of the vehicle and effectively reduce the friction of the tire.

1. Functional characteristics of multi-link independent suspension: multi-link suspension can not only ensure a certain degree of comfort, but also make the wheel and the ground as vertical as possible and reduce the tilt of the body as much as possible due to the large number of connecting rods. It is possible to maintain the ground adhesion of the tire. Its handling performance and double fork arm suspension are closely matched. Because of ample space, and pay attention to comfortable performance and control stability, most high-gear cars use multi-link suspension. It can be said that multi-link suspension is the best gear for high-gear cars.
2. The material characteristics of multi-link independent suspension, multi-link suspension structure is relatively complex, the material cost, research and development experiment cost and manufacturing cost are much higher than other types of suspension, and its space is large, small and medium cars for cost and space considerations rarely use this suspension;
3. the role of multi-link independent suspension: as the name suggests, multi-link suspension is composed of three or more connecting rod, and can provide multiple directions of control, so that the tire has a more reliable driving track of the suspension structure. However, nowadays, because the three-link structure can no longer meet people's higher pursuit of chassis control performance, only the more accurate structure, more accurate positioning of the four-link and five-link suspension can be called the real multi-link type, the two suspension structures are usually applied to the front wheel and the rear wheel respectively. Take the five-link suspension commonly used in the rear wheel as an example. The five connecting rods refer to the main control arm, the front positioning arm, the rear positioning arm, the upper arm and the lower arm respectively. Among them, the main control arm can play the role of adjusting the front bundle of the rear wheel, so as to improve the stability of the vehicle and effectively reduce the friction of the tire.

1. pneumatic device simple structure, light, simple installation and maintenance;
2. the working medium (the determining substance) is inexhaustible air, air itself does not cost money;
3. The adjustment of output force and working speed is very easy;
4. The reliability is not too high, and the use time is greatly influenced by the cleanliness of the air source and the frequency of use;
5. the use of air compressibility, can store energy, to achieve centralized gas supply;
6. full pneumatic control (control) with fire, explosion-proof, moisture-proof ability and other characteristics.

Suspension Bushing Light weight, reduce the impact of the body, and improve the ground adhesion of the wheel; Soft spring with small stiffness can be used to improve the comfort of the car; It can reduce the position of the engine and the center of gravity of the vehicle, thus improving the driving stability of the vehicle; The left and right wheels beat alone, irrelevant, can reduce the tilt and vibration of the body. However, the independent suspension system has the disadvantages of complex structure, high cost and inconvenient maintenance.

1. in the resistance of large torque driving, there will be the phenomenon of the car, reverse will also appear the car, must increase the throttle can be solved;

2. start or open the air conditioning refrigeration engine jitter is very large, the steering wheel vibration is obvious at high speed, and the acceleration and brake pedal are also seismic;

3. When accelerating in second or third gear, you can often hear the sound of rubber friction;

4. When the above problems are found in the foot glue of the engine, it can be determined that the foot glue has been damaged, please replace it in time. The engine is not effective shock absorption and support will damage some parts, thus affecting the performance of the engine, not only running jitter but also the engine fixed unstable shaking phenomenon.