What is the bulge in the middle of the rear of the car? The truth turned out to be this!

Nowadays, when we look at a car, we will pay attention to whether there is a bulge in the middle of the rear row, and when people travel, the protrusion still affects the comfort of the ride; The back seat was originally a three-seater, because there is a raised place, it has become a two-seater, and some passengers sitting in the middle of the back seat also have such an experience, their feet do not know how to put it, how to put it is not very comfortable, it has a great impact on the passengers' feet, and sometimes they can only get on and off on one side.

Why should there be a bump in the rear design? How did the car companies design it? Today we will talk about the bulge in the rear row, the main of which is the propeller shaft and exhaust pipe.

The design of the transmission shaft and exhaust pipe needs to have a bulge This situation should start from the drive mode of the front rear drive, the front rear drive mode we often talk about generally means that the engine is placed at the front end of the car, and the drive wheel is the rear wheel of the car, usually the rear-wheel drive car must transmit the power of the engine to the rear wheel through the drive shaft, so the structure needs to have such a bulge. The chassis of the vehicle should be arranged with exhaust pipes, brake pipes and other pipelines and transmission shafts (rear-wheel drive, four-wheel drive vehicles), for the flatness of the chassis, so there is such a bulge in the middle of the rear row, sacrificing the interior space. If a four-wheel drive version of a front-wheel drive model is used, the car company will also produce a raised chassis for the sake of cost savings.

Even if some models are both front-wheel drive and do not have a four-wheel drive version, then why do they still have this bulge, this is because the exhaust pipe is arranged under the car. The exhaust pipe passes from the engine through the body to the rear of the car, and it is also necessary to steal a little space from under the car.

The reason why some cars do not have a bulge So, some people asked, how do some models with a very flat rear row or few bulges do it, the rear seat is not crowded at all, and the middle floor of the rear row is also very flat, without a little bulge. That's because the chassis of these models is relatively high, and there is already a lot of space on the outside for the propeller shaft and exhaust pipe, so it does not take up space in the car.

Don't worry about the bulge or not, from the design point of view, this bulge is not unavoidable, some models will design the exhaust pipe very low, and even the smallest place in the ground clearance is the exhaust silencer package, so the space is saved, but the chassis will look unsightly, and it will increase the risk of damage to the exhaust pipe when dragging the bottom. In addition, some manufacturers have found another way, put the exhaust pipe on the side of the chassis, so that the problem of the middle bulge is completely solved, in fact, we don't have to be too entangled when choosing a car, this is completely in the choice between comfort and safety Look at which point you value more!

In general, the bottom is the exhaust pipe.

And there are multiple layers of meaning. One is that this raised part is to take into account the flatness of the chassis, there are many hanging parts on the chassis of the car, especially the exhaust pipe, and the front rear-wheel drive car also has a drive shaft, if the chassis does not reserve a channel, these two things are relatively close to the ground.

Most of the cars that don't protrude in the middle of the rear row are Japanese cars. There are Honda Civic, Kia K2, Hyundai Langdong, Toyota Corolla, and many more. Because Japanese cars rarely have rear-wheel drive and four-wheel drive vehicles, most of them are front-wheel drive vehicles.

In addition, in order to create a comfortable rear seat, Japanese car manufacturers have raised the height of the chassis and buried the reserved grooves under the chassis. The 10th-generation Civic (Civic) is recommended.

Everyone has a love for beauty, who said that the pursuit of fashion is the patent of young people? The outstanding appearance of the tenth-generation Civic (Civic) has attracted countless car owners with its fashionable and cool temperament, and it can truly be called a public lover.

Appearance is justice. For most car buyers, the first impression is extremely important, but due to the different interpretations of fashion by consumers, or the different interpretations of aesthetics by model, there will be a wide variety of perceptions and acceptances. Of course, there are exceptions, such as the 10th-generation Civic (Civic), no one will refuse the high appearance of the ta, regardless of whether it is finally chosen.

As a sedan with sporty genes, the overall styling of the 10th-generation Civic is full of dynamic elements, especially the fastback shape and low center of gravity design style, so that the 10th-generation Civic can be the focus of attention anytime and anywhere.

The well-depicted sharp front face and blazing LED headlights, angular tail and chic taillights make it easy to identify the identity of the 10th-generation Civic, coupled with the beautiful and atmospheric wheel shape, which perfectly fits the aesthetics of car lovers.

In addition, the ultra-long wheelbase of 2700mm and Honda's mm space concept (maximizing ride space and minimizing machine space) also fully guarantee the space comfort of the 10th-generation Civic, and both front and rear passengers can get a more superior travel experience. In addition, the fastback shape also makes the trunk opening larger, which is more conducive to loading larger items, which is very practical.

Cars without protrusions in the rear are: Toyota Crown, Hyundai Langdong, Honda Civic, Kia K2, Toyota Corolla, etc.

Crown, Toyota's star sedan, from 1964 to 2005 domestic sales, Crown has been playing the role of a luxury car in the domestic market, and now Crown has developed to the fourteenth generation.

The new generation of the crown pinned on Toyota's dream of reviving the C-class car, in terms of upgrading, the new generation of the crown is still worth affirming, first of all, with Toyota's most advanced TNGA architecture, secondly, the powertrain is also more abundant, and finally, the sportiness of the vehicle has increased a lot, compared with the previous generation of models, consumer acceptance will be higher.

Langdong is the first Hyundai Motor global model to be launched overseas. Elantra has an uncompromising "international style" - sweeping the four continents of the world and creating a brilliant record.

Langdong is equipped with an engine and a NU engine, the engine technology has been improved, and the electric steering is light and comfortable; The suspension is stiff, the roll is low in high-speed cornering, and the body stability is good.

The 2019 Dongfeng Honda Civic will be available in 16 models, including national V and national VI emission standards. In terms of design, the new car has a complete styling, while the exhaust at the rear of the car is more of a two-eyed one.

The 180 Turbo CVT is equipped with airbags for the main and passenger passengers, tire pressure monitoring and various driving modes. In the higher tiers of the 180 Turbo CVT stationary model, a reversing image, a power sunroof, front keyless entry and front fog lights are added.

In China, Lexus's success is primarily due to its robust business philosophy and development strategy. We do not pursue a temporary sales boom, seek a win-win situation for customers, distributors and manufacturers, and unswervingly provide high-quality services that exceed customer expectations.

First of all, the dealer access standards are strict and the network development is healthy. Lexus firmly believes that the luxury experience of customers starts from the 4S store.

Lexus is meticulous about the construction and operation management of 4S stores, from reviewing the specifications of the floor plan, materials used, and design style, to clearly stipulating the dress style of the staff. It can be said that the attention to detail experience is part of the Lexus luxury experience, and it is also a window for Lexus to convey a warm luxury lifestyle.

Secondly, Lexus took the lead in providing a free maintenance policy in after-sales service, which not only caused the industry to follow suit, but also improved the favorability of end customers to the brand. Lexus provides 4 years or 100,000 km and 6 years or 150,000 km (smart and hybrid models) free warranty and maintenance services, coupled with a stable retail ** system, to bring customers consistent consideration and luxury.

At the design level, Lexus has explored traditional oriental craftsmanship and applied it to its models, such as Lingguang Kiriko, Tsuruha Folded Cloth, Extreme Wood Grain Trim, Washi Texture Finish, Thorn Embroidery and so on. It not only adds a unique charm to the vehicle design, but also makes customers feel the profound spirit of ingenuity in the era of large-scale industrial production.

At the technical level, Lexus is the first luxury brand to deploy hybrids, and now the global and domestic calls for energy conservation and environmental protection are getting higher and higher, Lexus chooses the hybrid layout can be said to be the most stable and efficient, up to now, smart hybrid models account for more than 30% of the brand's sales.

Cars without protrusions in the rear row include Honda Civic, Toyota Crown, Hyundai Langdong, Lexus, etc.

The Honda Civic has launched a variety of models to cater to the tastes of consumers in different countries, including a three-door hatchback, a coupe coupe, a hybrid version, and a five-door touring car version. The Honda Civic launched in China and Dongfeng Honda's existing model, the Honda CR-V, are from the same production platform, and the two cars use the same chassis, which provides a technical prerequisite for the domestic production of the Honda Civic.

After 40 years of experience, it has evolved in 8 generations, and now the ninth-generation Civic (Civic) embodies many advanced technologies that are ahead of the times, presenting you with a very futuristic and technological charm.

The new Crown is available in four variants and seven grades, all powered by twin VVT-i engines mated to a six-speed automatic manual transmission with an FR (front-rear-wheel drive) platform for smooth handling and abundant drive. In addition, the new crown also achieves the ideal distribution of 53:47 front and rear body weight through the maximum weight reduction of the engine and suspension system and its scientific layout, and maintains the balance of body weight.

In terms of active safety, the new crown adopts advanced braking technology and a variety of excellent driving assistance equipment, including TRC traction control system and VSC body stability control system, as well as VDIM vehicle dynamics integrated management system to ensure optimal traction in all road conditions and achieve excellent handling effectiveness.

A lot of the key you have to look at what type of things like MG Camaro but also Ford, Audi Volkswagen.

Because of the laughing pin, both the propeller shaft and the exhaust pipe need this raised collision space. Front-wheel drive cars generally only have an exhaust system here. Its role is: structural needs, security needs, and safety needs.

There is a raised ground cluster in the middle of the back of the car, which is so that the passengers in the back can put their arms on it, which will be more comfortable.

The middle bulge of the rear row is the body floor, and the rear row must bulge because this place needs to accommodate the exhaust pipe, and some rear-wheel drive cars have a driveshaft to accommodate it, and the rear floor bulge of the rear-wheel drive car is higher. And this bulge can also improve the rigidity of the body, which can improve the safety of the car.

Some cars will flatten the floor in the back. This kind of car has a specially designed exhaust pipe, and this kind of car must be a pioneer.

The floor of the rear row can be made very flat and empty, but this is not conducive to improving the rigidity of the body.

If you want to flatten the rear floor, you need to add reinforcements in some parts to improve the rigidity of the body.

Whether it is a commercial car or a performance car, body rigidity is very important.

The higher the rigidity of the passenger compartment, the safer the car.

For a performance car, the more rigid the body, the better the car's handling.

If the body rigidity is poor, the body reaction will be slower when operating the car, which is a very bad feeling.

Therefore, when major car companies manufacture cars, they are trying to improve the rigidity of the body by all means.

Some car companies will use some special composite materials to improve rigidity, and the use of composite materials can also reduce the weight of the body.

However, the use of composite materials increases the cost of manufacturing a car.

The middle of the rear row is protruding is the floor of the body, and the rear row must have a bulge, because this place needs to accommodate the exhaust pipe, and some rear-wheel drive cars also have a transmission shaft to accommodate, and the rear floor bulge of the rear-wheel drive car is higher. In addition, this bulge can also improve the rigidity of the body, which can improve the safety of the car.

There are some cars that make the floor of the rear row flat, such cars have a special design of the exhaust pipe, and this kind of car must be front-wheel drive.

The floor of the rear row is made flat to increase the space, but this is not conducive to improving the rigidity of the body.

If you want to make the floor of the rear row flat, you need to add reinforced parts in some parts to improve the rigidity of the body.

Body rigidity is very important for both commercial and performance vehicles.

The higher the rigidity of the passenger compartment, the better the safety of the car.

For a performance car, the more rigid the body, the better the handling of the car.

If the rigidity of the body is poor, the response of the body will be slower when controlling the car, which is a very bad feeling.

Therefore, when manufacturing cars, major car companies are trying to improve the rigidity of the body.

Some car companies will use some special composite materials to improve rigidity, and the use of composite materials can also reduce the weight of the body.

However, the use of composite materials increases the cost of building a car.

Photo by Q&A) Mercedes-Benz S-Class M5 Ideal One Buick GL8 Xpeng P5 Xpeng Motors P7 @2019