Yichexun?A few days ago, Harley’s brand-new road gliding and avenue gliding were officially launched. The configuration of the two cars was upgraded, the fairing was completely designed, and it was also equipped with a brand-newMilwaukee-Eight ^? 117 V Model a twin-cylinder engine. Avenue gliding costs 388,800 yuan, and highway gliding costs 408,800 yuan.

Street Glide boulevard gliding

The iconic bat wing fairing has a new look, the outline is carved as a whole, and LED lighting and shunt vents are fully integrated. With the help of computational fluid dynamics (CFD), the design of the fairings for avenue gliding optimizes the aerodynamic efficiency and improves the comfort of riders.

Road Glide highway gliding

The outline of the shark nose fairing is carved as a whole, and LED lighting and newly designed windshield are fully integrated, giving a new vitality. With the help of computational fluid dynamics (CFD) to improve aerodynamic efficiency, Highway glidingThe fairing is completely designed on the basis of the original frame fairing, which optimizes the road performance and rider comfort.

The two cars are equipped with brand-newMilwaukee-Eight ^? 117  1923cc V Model A twin-cylinder engine, with maximum power of 78kW/4600rpm and maximum torque of 176Nm/3250rpm, can produce 105 horsepower. With the increase of displacement, torque and horsepower, the new engine adopts a brand-new liquid-cooled cylinder head, which further optimizes riding comfort, especially in low-speed driving and hot weather.

The new car is equipped with a new 12.3-inch high-definition full-color TFT touch screen, which is more sensitive to touch and has navigation and SKYLINE OS infotainment system.

Driving mode provides more control and confidence under various driving conditions by electronically adjusting performance attributes and safety technical intervention level. Each driving mode (road, sports, rainy day, user-defined) provides a specific combination of settings, and also has settings such as engine braking, anti-lock braking system (C-ABS) and traction control system (C-TCS).

The brand-new avenue gliding is 8kg lighter than the old one, and the road gliding is 7.26kg lighter than the old one, which comprehensively improves the vehicle performance. The brand-new two cars are designed to improve driving comfort. The fairing redesigned according to aerodynamics and the brand-new engine are both beautiful while improving performance. Although the price is expensive, it is worth it!

[car home Fuzhou Preferential Promotion Channel] Recently, a large-scale preferential activity was launched in Fuzhou, with the highest preferential margin reaching 45,000 yuan and the lowest starting price reduced to 204,900 yuan. If you are interested in this model, please click "Check the car price" in the quotation form to get a higher discount.

Faw-Volkswagen CC’s exterior design is fashionable and atmospheric, the front face adopts family-style design language, the air intake grille adopts hexagonal design, and the interior is decorated with chrome banners, with sharp LED headlights, creating a strong visual impact. The overall style tends to be luxurious, the body lines are smooth, the side of the body adopts streamlined design, showing an elegant body outline, the tail design is simple and fashionable, and the overall shape is very in line with modern aesthetics.

The body size of FAW-Volkswagen CC is 4869*1870*1459mm, the wheelbase is 2841mm, the front tread is 1586mm and the rear tread is 1572 mm.. The lines on the side of the car are smooth and elegant. The front tires and the rear tyre size are both 245/45 R18, and with 18-inch rims, it shows a sporty and exquisite style.

The interior of FAW-Volkswagen CC adopts a simple and fashionable design style. The layout of the center console is simple, and the 9.2-inch central control screen is clear and easy to use, which supports voice recognition control of multimedia systems, navigation, telephones and air conditioners. The steering wheel is made of leather, which feels comfortable and supports manual adjustment up and down and back and forth. The front and rear seats are made of leather /Alcantara mixed materials. The front seats have heating function, and can be adjusted back and forth, height adjustment (4-way) and lumbar support (4-way), bringing comfortable driving experience to drivers and passengers. Sufficient USB and Type-C interfaces are provided under the seat, which is convenient for passengers to charge electronic equipment. In addition, the rear seats support proportional tilting, which increases the flexibility of the interior space.

FAW-Volkswagen CC is equipped with a 2.0T turbocharged engine with a maximum power of 137kW and a maximum torque of 320N·m, with excellent power performance. With the 7-speed wet dual-clutch gearbox, the acceleration and shift of the vehicle are smoother and the driving experience is improved.

The owner of car home praised the appearance of FAW-Volkswagen CC. He thought that the appearance design of this car was unique and attractive, the body lines were smooth and full of strength, and the overall design was like a swimming fish, fashionable and dynamic. He specifically mentioned that the headlight design is unique, the air intake is domineering, and the design of the small tail and tail is icing on the cake, making the whole car very attractive from any angle. As the owner said, "It’s very cool to drive this car out", the design of FAW-Volkswagen CC undoubtedly brought the driver a high turn-back rate and pride.

　　[car home Engine Disassembly] It’s human nature to like new things, and you won’t miss an important new car like brand-new (|). But I’m sorry, the new car hasn’t come on the market yet, and even the test drive report hasn’t been seen yet, but it doesn’t matter. Let’s take a look at the new 1.5T GDI engine on the new GS5 first.

● Basic information of engine

　　We noticed that the cylinder diameter/stroke ratio of GAC, a brand-new 1.5T GDI engine, has become smaller. This change of long stroke is helpful to improve the engine torque and make the engine respond better at low speed.

　　However, by comparing the power parameters of the three engines in the above table, we can intuitively see that the same 1.5T engine has different tuning and the maximum power/torque is different. Take the maximum horsepower as follows: Honda 177Ps＞ > Chuanqi 171Ps＞ > Great Wall 169Ps, but the maximum torque is reversed: Great Wall 285N·m＞ > Chuanqi 265ps. Chuanqi’s self-positioning in this "challenge" is quite clear. The setting of power parameters is not blindly adjusted upwards, but on the premise of ensuring power and torque, the output speed of maximum power is lowered and the output speed range of peak torque is widened.

　　Of course, Chuanqi 1.5T GDI engine, as one of the "three big parts" of the whole vehicle, is an important factor that many consumers consider before buying a car. This disassembly is more to help consumers clarify the advantages and disadvantages of Chuguangqi 1.5T GDI engine. AB: What is the difference (highlight) between Chuanqi GS5 1.5TG DI and GS4 1.5T engine in 2019? What gains can these highlights bring?

● What are the highlights of GAC’s 1.5T GDI compared with the previous 1.5T?

Highlight 1: change from manifold injection to in-cylinder direct injection

　　First of all, the biggest difference between this 1.5T GDI and GS4 1.5T engine lies in its name-GDI (in-cylinder direct injection). The most direct benefit of changing the fuel injection system from manifold injection to in-cylinder direct injection is that the engine power performance is improved and the harmful gases in the exhaust gas are relatively reduced. Moreover, we know that the first-tier cities in China will soon implement the more stringent national six emission standards. As a car company, GAC must be ahead of the policy, so this engine adopts in-cylinder direct injection technology to achieve the national six emission standards.

　　It is worth mentioning that "National VI" refers to a national policy standard for automobile exhaust emission. After the implementation of the "National VI" emission standard, it will be divided into two stages: "National VI A" and "National VI B", which will be implemented on July 1, 2020 and July 1, 2023 respectively. In some emission standards, "National VI B" is more than twice as strict as "National VI A" )

　　It is worth mentioning that with the help of turbocharger, a higher compression ratio means that the engine is more efficient, can improve more power performance, and saves more fuel, etc. After all, the working feature of direct injection engine is to directly inject fuel into the cylinder, and use the air flow in the cylinder and the fuel on the piston surface to achieve better atomization effect.

　　Direct injection engine has a good performance in working uniformity and performance under full load, and even the problem of working instability of cold car has been significantly improved. Of course, things are two-sided. While the engine enjoys the power improvement brought by high compression ratio, it is also a test for the fixation of high-pressure fuel rail and the fuel pump pressure of the fuel supply system.

　　The "dadada" sound of direct injection engine during fuel injection has always been a headache for engine NVH engineers. We can see their solutions on GAC 1.5T GDI this time:

　　When the engine is running in the compression stroke, the pressure in the cylinder is very large. For in-cylinder direct injection engines, ordinary fuel pumps can’t meet the demand. Another important feature of in-cylinder direct injection engine is that the fuel supply pressure of fuel pump is very high, so that gasoline can be effectively injected into the high-pressure combustion chamber.

　　Because of the combustion characteristics of gasoline, the compression ratio of ordinary engines can’t be designed too high, otherwise it is easy to knock, so most direct injection engines will divide the fuel injection process into two stages, that is, two injections. The GAC 1.5T GDI engine made a small breakthrough in fuel injection-The strategy of "three injections per cycle" is adopted under the specific working condition of "high load and low speed"(It can be understood that the fuel is injected three times per cycle only when the vehicle starts, and it is injected twice in other working conditions): The first-stage pre-injection (which occurs in the intake stroke and the crank angle is about 360°~180°CA) can take away a lot of heat in the cylinder under the action of gasoline volatilization, and reduce the cylinder temperature, so as to achieve a lower ignition angle, and to effectively suppress the probability of knocking and ensure stable combustion. The second and third main fuel injection (which occurs at the end of compression stroke and before power stroke, and the crank angle is about 0°CA) can bring higher exhaust temperature and accelerate the light-off of three-way catalyst.The advantage isTo achieve a rapid start, reduce engine emissions, meet the national six B emission standards, and reduce fuel consumption.

Highlight 2: Switch to exhaust gas turbocharger with lower inertia.

　　Although turbocharging technology is not a brand-new technology, it is the mainstream development direction to apply turbocharging technology to small displacement engines. Thanks to the ingenious design of turbine blades, the low inertia exhaust gas turbocharger provided by Borgwarner can take into account both high speed and high power and low speed and high torque.

Highlight 3: The three-way catalytic converter has added more precious metals.

　　Engineers have made a lot of efforts to purify the exhaust gas in order to make the exhaust gas from the 1.5T GDI engine meet the national sixth B emission regulations. The biggest highlight is the adoption of a brand-new three-way catalytic converter and the addition of more precious metals in the catalytic converter, thus reducing the light-off temperature to 270℃. What is the concept of 270℃? Let me give you an example for your reference: the light-off temperature of the three-way catalytic converter in the general national standard is 400℃, and the difference between them is 130℃.

　　The author jokingly said here: the exhaust gas discharged by an engine that can meet the national six B emission regulations should be cleaner than the air in many cities, right? Is that engine like a walking "air purifier"?

　　　　[XCAR Technology Original]

　　　　Since the day when the automobile was invented, a "bad guy" who followed the vehicle along with it also appeared at the same time, and that was noise. In order to give users the best driving experience, in the past decades or even hundreds of years, car manufacturers have been fighting the "bad guy" of noise endlessly.

　　　　Now, automobile manufacturers will adjust their vehicles through strict noise control standards to ensure that each vehicle can achieve a good level of noise and vibration suppression when leaving the factory. Recently, the author was lucky enough to participate in and experience the NVH test of Changan Auchan. In the test, I experienced Changan Automobile’s emphasis on the development of Auchan’s NVH. So what "magic weapons" did Changan Automobile use to control Auchan’s NVH? Let’s continue to look down.

1. What is NVH?

　　　　NVH is the abbreviation of Noise, Vibration and Harshness. Noise and vibration are easy to understand. To put it bluntly, the roughness of acoustic vibration is those uncomfortable feelings, such as harsh, roaring sound and uneven vibration. NVH is the core index to measure the comfort and quality of a car, and the feeling it brings to users is also the most direct.

　　　　According to statistics, four of the top 10 complaints of consumers about automobiles are about NVH, namely, engine noise, tire noise, wind noise and body noise. About one-third of the complaints of the whole vehicle are related to the NVH problem of vehicles, and nearly 20% of the research and development expenses of major car companies are spent on solving the NVH problem of vehicles.

　　　　It can be seen that NVH is very important for both the vehicle itself and the brand, because it can give consumers the most intuitive impression and directly affect consumers’ perception of the "texture" of the vehicle, so it is an important task for all car companies to develop NVH well. At present, NVH is mainly determined by these points: government regulations, customer requirements, company needs and technical capabilities, competing models.

　　　　At present, automobile sound control has gone through three development stages:

　　　　1. Reduce noise: solve the error state of NVH and reduce noise.

　　　　2. Sound quality control: make the sound comfortable, meet the requirements of specific customer groups, and the sound of the vehicle model is personalized.

　　　　3, sound quality DNA: the model is personalized and the brand voice is differentiated.

　　　　Through the above three stages, the transition from noise control to sound design has been realized.

Second, the control of Auchan NVH

　　　　The vehicle noise that we can hear is usually generated by the noise source and transmitted through the channel to reach our ears. Generally, noise sources and transmission channels are controlled to reduce noise. Simply put, this is the transmission of sound in physics, and noise reduction should be suppressed from the source and propagation.

　　　　Generally speaking, vehicle noise is mainly divided intoAir soundandStructural sound：

　　　　Air sound sources: engine radiation noise, air inlet noise, air outlet noise, tire radiation noise, etc.

　　　　Structural sound sources: engine vibration, exhaust hook vibration, chassis vibration, transmission bearing vibration and so on.

　　　　Two kinds of sound sources are transmitted through the car body, and the air sound source reaches our ears through the car body barrier and car body sound absorption; The structural sound source reaches our ears through the body structure, bracket and vibration isolator. These two kinds of sound sources are transmitted and attenuated to form the interior noise together.

　　　　After understanding the generation of noise, let’s see what anti-noise and vibration capabilities Auchan has. Auchan, as an MPV model with high hopes from Chang ‘an, naturally invested a lot in NVH. We found many NVH development achievements on Auchan’s car body.

　　　　In the overall design, Auchan has optimized the acoustic vibration transmission structure such as modeling, powertrain, car body and chassis suspension, so as to reduce the noise source and isolate the transmission of vibration and noise outside the car.

　　　　The first is engine noise suppression. Auchan’s 1.5L naturally aspirated engine has done a number of treatments in silence, including valves, fuel injectors, air intake systems, silent pulleys, etc., which reduced the engine noise at the source. According to official data, the idle noise value of Auchan is only 39 decibels.

　　　　Auchan soundproofed the engine to reduce the noise from being transmitted into the cab through the front wall, fender, hood and other channels. The composite sound insulation and absorption material is pasted under the hood, which can absorb and reduce the noise of the engine and suppress the vibration of the hood.

Nowadays, there are many kinds of cars, and all kinds of models are dazzling. At this time, we should proceed according to our own reality, and the right one is the best. Nowadays, the first thing for consumers to buy a car is to see whether this car is rich in configuration, and it is no exception to nature. As for the outstanding performance of the car, please read it together.

Let’s take a look at the appearance of Exploration 06. The front face of Exploration 06 has taken a young and fashionable route, which is very recognizable. Headlights are very in line with consumers’ aesthetics and outline a deep effect. The car is equipped with LED daytime running lights, automatic opening and closing, adaptive far and near light, delayed closing and so on. Coming to the side of the car body, the size of the car body is 4500 mm * 1865 mm * 1680 mm. The car adopts fashionable and dynamic lines, and the car body looks very spirited. With large-sized thick-walled tires, smooth lines run through the whole car side. In the rear part, explore the overall shape of the 06 rear and the front of the car, and the taillights present a fashionable and sporty design style, which is neat and vivid.

When I came into the car, the interior looked very sedate and reflected the sense of design. The steering wheel of the car is very domineering, made of imitation leather, and its practicality and face value are not bad. Take a look at the central control panel, which is decorated with a 13.2-inch central control panel, making the interior design quite layered and elegant. The interior feels good. Let’s take a look at the dashboard and the seats. The dashboard design is remarkable and looks very individual. The car uses leather seats, which are wide and thick, and the overall comfort and wrapping are not bad.

Explore 06 matching wet dual clutch (DCT) gearbox, with a maximum power of 145KW and a maximum torque of 290N.m, with good power performance.

Look at the configuration again, and explore that 06 is equipped with driving mode selection, remote control key, Bluetooth key, rear wiper, interior atmosphere light, engine start and stop and other configurations.

Summary of the full text: this class of vehicles can often give consideration to both cost performance and practicality, and is often considered by most consumers as the first choice when buying a car.