When it comes to car modification, many people will think that it is the patent of car lovers. In fact, car modification has become a fashion abroad. Even in Japan and the United States, which have the highest enthusiasm for modified cars, it is rare to see that the original car has not changed. After the new car is released, many manufacturers will provide quite a lot of modified accessories for the corresponding models and provide clear modification guidelines for the owners. Many car manufacturers even have modification companies (branches) that specialize in modifying their own cars, such as AMG of Mercedes-Benz and TRD of Toyota. The modified result of a car represents the owner's taste and his view on driving. Generally speaking, modification can be divided into appearance, machinery, audio and video, etc. When human life has entered the e-era, car modification has also added a new content: intelligence. However, among many modification projects, the most exciting one is mechanical modification, which perfectly combines the imagination of the owner with the infinite potential of the car to be developed. The main mechanical structure of automobile can be roughly divided into: body, interior equipment, engine power, gearbox transmission, suspension, braking and electronic control system. If there is any modification in the middle, you will immediately feel the influence and change of the car itself.

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The modification of body appearance has always occupied a very important position, and the fastest and easiest way to change the body appearance is to install aerodynamic suite. The so-called aerodynamic kit is commonly known as the big bag, which basically includes the air intake grille, side spoiler (side skirt), rear wall and rear spoiler (tail wing) and so on. Sometimes we will see that a lower spoiler is added to the original bumper, which is generally called chin: if the front and rear safety bars are not replaced, only the chin is added, and some people call it a small bag. Adding aerodynamic kit can not only make the vehicle more visible and sporty, but also improve its performance. Installing the aerodynamic package will not make the vehicle run faster. Strictly speaking, a good kit usually reduces the speed and makes the vehicle have more stable performance.

engine

Just like the human heart, the engine is the heart and the most important part of a car. Moreover, it is also the most troublesome to modify. The main modification is to improve its output power. The transformation methods include: increasing cylinder diameter, increasing compression ratio, adding more valves, etc. However, it must be noted that it is quite dangerous to modify the engine. One carelessness will damage the engine and even lead to serious safety accidents.

combustion system

Ignition system is another element of engine work, which consists of spark plug and ignition wire. The original configuration is a single wire harness, and the voltage and current passability and throughput are not satisfactory. High-voltage electricity generated by multiple groups of wire harnesses and high-performance conductive ignition coils modified with live wires can be conducted to spark plugs in large quantities and in time. The spark plug is the terminal group of the ignition system, which uses the spark generated by the electrode to ignite the mixed oil and gas, complete the combustion and push the piston to work. The original factory configuration, like firewire, is the lowest configuration to reduce costs. If the owner replaces the spark wire and spark plug, it will make the throttle of the car hard, start quickly and accelerate fiercely.

exhaust system

Exhaust efficiency is directly related to engine efficiency. With the increase of air intake and good combustion condition, the exhaust efficiency needs to be strengthened. High-performance exhaust pipes and silencers have become the goal pursued by car owners who pursue power. If the automobile exhaust system with modified air intake and ignition system is modified again, what about the uranium in the automobile?

Brakes

In fact, the structural design of the brake system is relatively simple, but the workload of modification is relatively large. The quickest and most direct way to improve its braking performance is to replace high-performance brake pads. In addition, if you want to upgrade the brake system, you can also change the advanced brake oil; Or replace the high-pressure brake oil pipe made of metal; In addition, a larger brake multiplier is used to increase the auxiliary power of the brake pedal.

Chassis suspension

The biggest factor related to driving control is the chassis suspension system of the car, and the design of the original factory is generally aimed at the acceptance of the mass consumers. The modification of chassis suspension system can be divided into replacing shock absorber, strengthening suspension structural rod and strengthening body stiffness. The most influential and modified item is the shock absorber. The types of shock absorbers on the market are: original factory reinforced type, original factory reinforced body height adjustable type, professional high sports type, competition special type and so on. Car owners should choose shock absorbers according to their driving habits and needs.

6 drivers must watch! Five most dangerous driving illusions

Affected by many factors such as physiology, psychology, age, physical condition and driving environment, drivers often have various illusions when driving, leading to misoperation and dangerous situations. Therefore, drivers (especially novices) should understand these characteristics that are easy to cause illusions and take preventive measures during driving to ensure driving safety. Distance illusion: For all kinds of vehicles on the road, drivers sometimes have illusions about the length, distance and distance of coming vehicles, which makes the distance between vehicles insufficient and too close, leading to accidents. Common ones are: the same distance, it looks close during the day, and it feels far at night; It feels close when the front is a big car, but it feels far when it is a small car. Speed illusion: drivers mostly estimate the speed according to the observed scene movement as a reference during driving, and do not rely entirely on the instructions of the vehicle's own speedometer. It is easy to overestimate the speed when there are many roadside scenes and underestimate the speed when there are few scenes; Driving at a certain speed for a long time will adapt to this speed, and it is easy to misjudge the rest of the speed, especially it is very dangerous to underestimate the high speed. It is for this reason that motor vehicles entering the urban area from the suburbs are prone to rear-end accidents. Bend illusion: the driver's speed on the expressway often changes with the bend of the expressway. The degree of speed change can also cause illusion. Generally speaking, for an arc that does not exceed a semicircle, drivers often feel that the radius of curvature is always smaller than the actual one, and the shorter the arc length, the smaller the radius of curvature. Driving on a continuously turning mountain road, drivers will find it easier to turn in mountainous areas than in flat areas, so it is very dangerous to turn sharply at high speed during driving. Color illusion: in urban areas and other traffic complex sections, the surrounding scenery is colorful and intertwined, which is easy to distract the driver's attention, especially at night, and it is easy to regard the traffic lights at the intersection as neon lights; Treating the taillight of a stopped vehicle as the taillight of a moving vehicle; Mistake the brake lights of the front car for taillights, etc. In addition, wearing dark sunglasses in summer is easy to "filter" light-colored objects and create illusions.