What is gullwing gate?
The so-called gull-wing door, that is, its hinge is on the ceiling, is named because the door opens like a wing. The gull-wing door looks dynamic, giving people a feeling of flapping their wings and wanting to fly.
What is the third stop light?
There are brake lights on both sides of the rear, but another brake light is needed in the middle of the upper part of the rear. This brake light is the third brake light, also called high-position brake light. These three brake lights turn on and off together.
What is the "small tail" behind the car?
The small tail of a car is called shark fin, which is used to enhance the communication signal of the car. Shark fin antenna was not well known and respected by the public at first. A few years ago, most of the antennas we saw in cars were rod antennas.
In order to enhance the communication signal of automobiles, BMW has specially developed shark fin antennas for BMW series vehicles. Since then, shark fin antennas have been widely loved by riders because of their generous appearance, complete functions, diverse colors, integration with the whole body, fashion, dynamic and dazzling appearance, and various shark fin antennas for middle and high-end vehicles have been launched in the market.
What are the main differences between the same platform models?
The same platform does not mean that the models are similar. The models developed on the same platform only show that the chassis design of these models is roughly the same, which does not mean that their models have the same performance. For example, Volkswagen PQ35 platform (A5 platform) has derived a variety of models, from Touran, Katie, Sagitar, Golf to Audi A3, and Audi TT sports car.
For another example, although Volvo S40, Ford Focus and Mazda 3 are all developed on the Ford medium-sized car platform (C 1), they are not made by the same manufacturer, but the chassis size design is similar. However, the specific dimensions, engines, body and chassis electronic equipment, suspension and adjustment of body parts, origin of spare parts, interior materials, safety configuration and even manufacturing process requirements of these three models are different.
Why do some speedometers have two digital circles?
In many cars produced in Europe and America, their speedometers are all so-called "two laps", one in kilometers per hour (km/h) and the other in miles per hour (mile/h/MPH) to meet the needs of users in different regions.
Because in the United States and Britain, the British system is still used, and the driving distance is generally expressed in miles, while we often use the M system, that is, kilometers, to express mileage. 1 mph is equivalent to1.609 km/h.
What is the structure of pure electric vehicles?
The composition of electric vehicle includes: mechanical system such as electric drive and control system, driving force transmission, and working device to complete the established task. Electric drive and control system is the core of electric vehicle, and it is also the biggest difference from internal combustion engine vehicle.
The electric drive and control system consists of driving motor, power supply and motor speed regulating device. Other devices of electric vehicles are basically the same as internal combustion engines.
What is a wet oil pan?
Most of the cars seen in the market are wet oil pans, so it is named because every time the crankshaft rotates, the crank and connecting rod of the engine will be immersed in the lubricating oil in the oil pan once to play a lubricating role. At the same time, due to the high-speed operation of the crankshaft, every time the crankshaft is immersed in the oil pool at high speed, it will arouse certain oil flowers and oil mist to lubricate the crankshaft and bearing bush, which is called splash lubrication.
In this way, there is a certain requirement for the liquid level height of lubricating oil in the oil pan. If it is too low, the crankshaft crank and connecting rod head cannot be immersed in lubricating oil, resulting in poor lubrication of crankshaft, connecting rod and bearing bush; If the lubricating oil level is too high, it will lead to the overall immersion of the bearing, increase the rotational resistance of the crankshaft, and eventually lead to the decline of engine performance. At the same time, lubricating oil will easily enter the combustion chamber of the cylinder, resulting in engine oil combustion and carbon deposition in the spark plug.
What if the car bottoms out?
When the car is at the bottom, it must not be forced to move forward, but should be backed up to get the car out of trouble. A very effective way is to put stones or other hard objects behind the driving wheels, and then let the car slowly back. If not, you can also turn the steering wheel and let the wheel press on the stone.
What is a double wishbone suspension?
Double wishbone suspension is also called double A-arm independent suspension. Double wishbone suspension has upper and lower wishbones, and lateral force is absorbed by both wishbones at the same time. The strut only bears the weight of the car body, so the lateral stiffness is high.
The upper and lower A-shaped wishbones of double wishbone suspension can accurately locate various parameters of the front wheel. When the front wheel turns, the upper and lower fork arms can absorb the lateral force on the tire at the same time, and the lateral stiffness of the two fork arms is large, so the turning roll is small.
Double wishbone suspension usually adopts the wishbone with unequal length (shorter on the top and longer on the bottom), which can automatically change the camber angle when the wheel moves up and down, reduce the change of track distance, reduce tire wear, adapt to the road surface, and have large tire contact area and good adhesion to the ground. Double wishbone suspension has excellent sportiness and is adopted by super sports cars such as Ferrari and Maserati.
Why is there water in the exhaust pipe?
When gasoline burns, it produces steam. When it meets the exhaust pipe with low temperature, it will condense into water. Therefore, the discharge of water from the exhaust pipe is a normal physical phenomenon. As long as other engine performances are normal, there is no need to worry about this phenomenon.
Because the parking angle of the car is different, or the engine speed is different, or the weather temperature is different, sometimes the exhaust pipe will discharge a lot of water, which is also normal. There is no need to panic. All engines produce water when they are running.
Even so, if there is water in the exhaust pipe all the time, it will not only corrode the exhaust pipe, but also affect the smooth exhaust. In order to discharge the water from the exhaust pipe as soon as possible, the engine can be operated at high speed, that is, the water can be blown away from the exhaust pipe at high speed.
Why is it difficult to shift the reverse gear of some cars?
In order to save costs, many economical cars are not equipped with reverse synchronizer, so it is sometimes difficult to engage reverse gear. Don't worry at this time, you can't hang it hard, you should try to make the car move a little, for example, drive forward a little, and then put it in reverse.
What is economic speed?
The average fuel consumption of a car is different at different speeds. It is not that the lower the speed, the lower the fuel consumption. When the vehicle speed is too low, the load rate of the engine is also low. At this time, the work done by fuel is wasted on the internal loss or heat dissipation of the car.
However, when the vehicle speed is too high, the air resistance increases with the square of the vehicle speed (for example, the air resistance at 80 km/h is four times that at 40 km/h). When the vehicle speed reaches a certain level, the air resistance will become extremely large, and the work done by the fuel is mainly used to overcome the air resistance.
Research and experiments show that the fuel consumption of Friends of Cars is the lowest in a certain speed range, and the speed at this time is also its economic speed.
The economic speed of different models is different. The economic speed of economical cars is relatively low, and the economic speed of large-displacement cars is relatively high. The economic speed of our common family car is generally between 60-80 km/h. When driving, it is the most fuel-efficient if we can keep the economic speed as much as possible and drive at a constant speed.
What kind of car is the stock car?
In fact, there are no clear rules for stock cars. Considering whether it is a stock car, the production date shall prevail. Generally speaking, domestic cars with a production date of more than 6 months should be counted as inventory cars.
Imported cars can last a little longer, because it takes some time for imported cars to come by sea, but they will be considered as inventory cars if they exceed 10 months.
What is a car design renderings?
On the basis of selecting a few sketches, you can start to draw the renderings. The renderings are more detailed than the sketches, and not only the local details are more realistic but also the three-dimensional sense is stronger.
In order to let people see the details of each part clearly, the renderings are generally color maps with few lines and few views from different angles. Some renderings are hand-painted, using markers, toner or spray guns, and some designers use computers to draw them.
Why can you save fuel by stepping on the brake pedal less?
Stepping on the brake pedal is a forced action, and accidents may occur if you don't step on it. But every time you step on the brake pedal, you will give up the work done by consuming fuel, which is equivalent to wasting fuel.
In a fuel-saving race, the final champion said that there is only one principle when talking about driving experience: try not to let yourself step on the brake pedal, or don't give yourself a chance to step on the brake pedal.
So, how can we step on the brake pedal less? If someone is approaching the intersection, there is already a red light ahead. He was still refueling and accelerating, rushed to the intersection, and then trampled the brake pedal to death.
Not only do people sitting in the car feel uncomfortable, but they are also prone to rear-end collision. The fuel you consumed when you just accelerated was also wasted, which was both costly and unsafe.
What kind of car does GT refer to?
GT: Latin Gran Turismo, translated into English, means Grand Tourer, which means luxury, while Tourer means travelers and cruisers. The big station wagon, together, is actually interpreted as a luxury station wagon.
GT models originated in the late 1960s and early 1970s. Although the vehicle manufacturing level at that time was able to produce some high-performance sports cars, due to the lack of early mechanical durability, the long-distance high-speed cruising ability of vehicles was generally insufficient, so at that time, it can be said that there were very few high-performance cars that could be used for long-term exercise.
Therefore. At that time, some top automakers in the field of high-performance sports cars made breakthroughs in engine engineering. When the new high-performance coupe went on the market, it was advertised under the banner of Grand Touring that this model had high output power and high durability.
Now GT cars have become synonymous with high-performance cars, and the meaning of "great travel" has long since disappeared.