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　　[Editorial of the Wall Street Journal on October 23rd] Title: The Puzzling Biden

　　Why do White House staff try their best to protect President Biden from the media? On Thursday, CNN gave the reason. Despite the friendly audience and non-difficult questions, Biden’s performance revealed why so many Americans lost confidence in his presidency.

　　Biden often seems to have no idea what he is talking about, which is a big problem. Taking the rising oil price as an example, Biden accused OPEC of not producing more oil, but then he said that the solution was "finally … … Invest in renewable energy. "

　　At present, most cars still rely on gasoline, and the way to reduce oil prices is to produce more oil to increase supply. If Biden hadn’t severely restricted American oil production, he naturally wouldn’t have to ask OPEC to increase production.

　　How does supply chain bottleneck lead to commodity shortage and inflation? Biden blamed Covid-19 and his employers for not paying enough to attract workers. However, employers all over the United States are raising wages, and they are still unable to fill more than 10 million job vacancies.

　　When asked whether the National Guard would be called to solve the shortage of truck drivers, Biden said he would. But as the White House later clarified, the deployment of the National Guard was actually controlled by the state governors.

　　Biden’s confusion also includes foreign policy, which should be his strength. On the issue of Taiwan Province, which is an important issue to China, Biden wrongly expounded the US policy. When asked whether he swore to protect Taiwan Province, Biden replied: "Yes, we have a commitment to do so."

　　The actual policy of the United States towards Taiwan Province is "strategic ambiguity". The Taiwan Relations Act promises that the United States will help Taiwan Province defend itself, but it does not contain a NATO-style promise, that is, to join the war to defend Taiwan Province’s democracy. Is Biden announcing a change in American policy?

　　Obviously not, because the White House quickly retracted Biden’s words. "Strategic ambiguity" still exists. Perhaps we should say that Biden has a strategic confusion. You must want to know what Beijing thinks of this performance. Does the White House’s swift retraction of Biden’s words mean that the United States has no intention of defending Taiwan Province? What is the policy of the United States? With such a chaotic signal sent to the opponent, the war has begun.

　　We point this out reluctantly because the United States needs a president who can cope with the pressure of work. Biden was never Demosthenes (ancient Greek orator — — — Note), and all presidents will "roll over" in their speeches. But Biden is often confused on major issues today, which is one of the reasons why he makes the public increasingly worried.

　　Recommendation: According to Nikkei Automotive Technology, several major Japanese automakers are currently equipping a new generation of CVT gearboxes to new models. This situation has appeared in the North American market, but different from the past, its strategy will focus on the global market and replace and eliminate the current AT gearbox on a large scale. In China, Honda and other manufacturers have also made it clear that the new models will be equipped with CVT. I recommend this article to everyone to understand the future layout of these enterprises in the main products.

　　Speaking of automatic transmission, DCT(Dual Clutch Transmission) is adopted in Europe, AT (automatic transmission) is adopted in the United States, and CVT (continuously variable transmission) is adopted in Japan. Up to now, it is common sense to adapt to local conditions everywhere. However, Nissan adopted a brand-new CVT for the North American model Altima, and Honda also decided to equip the North American model Accord with CVT, which broke this common sense. This paper discusses the latest CVT technology that is being developed to Japan, North America and even the whole world.　

　　Honda partially improved "Stepwagon" in April 2012, which increased the fuel efficiency of JC08 mode from 13.4km/L to 15.0 km/L.. In the overall fuel efficiency improvement of 12%, except the effect produced by idle stop mechanism, the remaining 5% is attributed to the improved and updated CVT (Figure 1).　

[Honda Stepwagon]

　　In fact, the CVT is not only equipped on Stepwagon, but a new "Accord" to be listed in North America in the autumn of 2012, and then a strategic component to be launched around the world. Previously, the North American Accord has been using a 5-speed automatic transmission (5AT), and the goal of the new CVT is to improve the fuel efficiency of the urban high-speed mixed mode by 10%.　

[CVT for medium-sized vehicles developed by Honda]

　　Support 2.0～2.4L engines. The fuel efficiency is 5% higher than the original CVT and 10% higher than the 5-speed automatic transmission. (b) "Stepwagon" equipped with the CVT for the first time.

　　Among the medium-sized cars in North America, the new "Atima" launched by Nissan in June adopts a new CVT, and now the car has the current top fuel efficiency — — The urban area is 27mpg(11.5/L) and the expressway is 38mpg(16.2km/L). Honda also chose CVT to compete with it.　

　　In the past, CVT had excellent fuel efficiency at low speed, but it was not good at high speed. Moreover, there are also opinions that the rapid acceleration performance is not good. However, Honda related people said, "From the example of Atima, we can know that CVT has sufficient commodity power in the United States."　

　　Developing three new CVT in one breath　

　　Of course, the new CVT has improved both acceleration performance and fuel efficiency. The range of speed ratio has been increased from 5.5 to 6.5. It is much larger than 5AT or so. By reducing the reduction ratio of Low Gear, the acceleration performance is improved, and at the same time, by increasing the reduction ratio of high gear, the engine speed during stable driving is reduced.　

　　In addition to CVT for medium-sized vehicles, Honda is constantly updating its products for light cars and small cars. It was originally launched as a light vehicle product, which has been applied to the "N BOX" launched in December 2011. In addition, it is planned to update CVT used for small cars such as Fit and replace AT with it (table below).

　　CVT for medium-sized vehicles supports 2.0～2.4L displacement engines, and its torque capacity is above 240 N m.. The CVT is different from the previous one, and it is envisaged to be applied globally. It also includes areas with long driving distance and severe use environment. Therefore, the new CVT has been redesigned with emphasis on reliability and durability (below).　

[The range of transmission ratio is expanded to 6.5]

　　At the same time, the fuel efficiency and durability are improved and promoted to the whole world.

　　The layout of the basic axis has not changed. First of all, after the input from the crankshaft, there is a torque converter, a planetary gear mechanism that can switch forward and backward, a primary pulley, a secondary pulley, a countershaft and a final reducer for transmission, which belongs to a more orthodox layout.　

　　What has changed is that the distance between the shafts of the pulley is expanded from the original 170mm to 180 mm. This is slightly longer than the new Jetco "CVT8" equipped by Nissan for Atima. When the distance between shafts is widened, the range of speed change ratio can be easily expanded and the transmission radius will be increased, so the efficiency will be improved. In addition, the diameter of the piston required for the pulley to clamp the belt can be enlarged.

[Nissan Altima]

　　Because the force pushing the pulley depends on the piston area, oil pressure and friction coefficient of engine oil, the oil pressure can be reduced by expanding the piston area by 20% and increasing the Froude number friction coefficient of CVT. Low oil pressure can reduce the load of oil pump.　

　　Moreover, in order to improve the efficiency of the oil pump, a chain-driven Vane Pump with two oil inlets and two oil outlets is also adopted. At low speed, the engine oil sprayed from one of the oil outlets can be returned to the input end, and the driving loss can be reduced by semi-spraying. Although this method has been used before, this time it has expanded the scope of semi-spraying.　

　　It also supports four-wheel drive models.　

　　In order to improve the reliability, a grinding process is also implemented to prevent the abrasion between the high-strength belt and the pulley. Because the car travels a longer distance overseas, the grinding process named Lapping is added to the original belt pulley processing while improving the durability of the belt. Therefore, the abrasion of the pulley surface can be reduced.　

[Stepwagon’s four-wheel drive also uses CVT gearbox]

　　Stepwagon’s four-wheel drive also uses CVT. In the past, even though CVT was used for two-wheel drive, AT was mostly used for four-wheel drive. The reason is that in order to prevent the locking of the driving wheel, it is necessary to control to adjust the transmission ratio instantly according to the reaction force applied to the gearbox, but it is difficult to ensure the reliability of the four-wheel drive vehicle with large reaction force.　

　　However, this time, the control performance of the engine was improved, and the burden of CVT was successfully reduced by adjusting the forward and backward switching clutch of the gearbox during locking. In the past, the forward and backward clutches and the lock-up clutch shared a hydraulic valve, and it was necessary to switch circuits. But this time, a linear solenoid was added and changed into independent control mechanisms.　

　　In the miniaturization and lightweight of the gearbox, the gasket divided into four pieces sandwiched between the housings was changed to metal, thus improving the rigidity when connecting the housings. Moreover, measures such as reducing the size of the valve body of the control system and reducing the thickness of the pulley have been added, so that although the torque capacity has been improved to some extent, the weight is still 95kg.

　　To be continued … …

When buying a car, most people will consider it, more space, better passability, etc., and everyone has endless praise. After all, ditches and ditches are inevitable on the road during weekdays, and they have to drive on weekends, but not all of them can withstand bad road conditions. For people who love off-road driving more, it is more suitable to choose a hardliner.

It was also divided into hard-core and hard-core, and there were several essential differences. The hard-core used non-load-bearing, thicker appearance, the same four-wheel drive system, and a low-speed four-wheel drive mode. With these factors, they usually had better off-road capabilities, but the comfort and handling were not so good.

The same sibling that will be brought in the near future – the shape has a small sense of sight. The front face adopts the latest V-Motion design language, the biggest highlight is the V-shaped thick chrome plating, the integrated headlights on both sides and the fog lamps on the lower part use light sources, and the front face adds more polyline shape, muscle portrayal is more obvious, and the rib lines on the front cabin cover enrich the shape and power of the front.

Not only does he have a big hard face, but the side shape also reveals his tough guy’s true colors. There are obvious upturned designs at the bottom of the front and rear of the car, and larger ones, which also enhance the passing performance. The 18-inch one is suitable for light off-road, and the front disc and rear drum are slightly unkind. The front and rear eyebrows have a wide protruding design, which is combined with the trapezoidal protrusion below to bring a greater sense of security. The silver reflector adopts a glossy shape to become the finishing touch on the side. A wide welcome pedal is set up to facilitate getting on and off the car, which may affect the passing on the way off-road.

Based on the model, it is comparable in size, with a measurement of 4882x1850x1835mm, which is 2850mm. The ratio is increased by 42mm and lengthened by 60mm. A wide spoiler is added to the tail, a larger tail light, a thick silver chrome strip, and a straight line. With a single-sided single-out, it always makes you feel more like a work car.

The interior is the practicality to the extreme, there is no extra decoration, the hard center console reveals its hard style. Using dual meters with a small LCD screen, the information of the central control screen is enough, and the driving computer, four-wheel drive system, and monitoring can meet the driving needs. The slightly thinner three pictures lack novelty, and the functions of the central control screen are just enough. The 360-degree and rear image are integrated inside, which feels a bit counterfeit products, but the interior also has its own anti-glare function. A telescopic cup holder with a trend position is added on the main driver’s side, and a handle is added on the co-pilot side to facilitate girls to get on and off. These configurations are very satisfactory.

The comfort of the front and rear seats fully explains the brand, the leather surface and filling are very soft, and the standard sofa configuration. The front seats have electric adjustment, and the rear seat backrest supports multi-angle manual adjustment, but the design of the rear seats is generally wrapped, and there is a headrest missing in the center of the rear row, which is neither safe nor comfortable. The rear provides independent air conditioning trend, 2 USB charging sockets, and the small size can meet the function of ventilation.

The current model only has a five-seat layout, but there are water cup slots reserved on both sides of the trunk, and it is predicted that there will be seven-seat models in the future. The trunk is flat, thanks to being placed externally in the car. If placed in the rear seat, the trunk can reach a depth of more than 2 meters, a width of 1.1 meters and a height of nearly 0.9 meters, making it instantly large.

Equipped with a 2.5L naturally aspirated unit numbered QR25,: 184 (135kW),: 236 Nm. Matches 6-speed manual or 7-speed, and uses the same series, both are imported versions. It is non-load-bearing, using the front double fork arms and rear structure, with system and rear axle. Generally, it is not a problem to have fun or get out of trouble in the wild.

When you can no longer satisfy your yearning for the distance, hardcore may bring you more driving pleasure and conquer more bumpy roads. In Yes, Yes, etc., this hardcore will also be officially launched on April 12. From the appearance to the interior, from the cockpit to the outside, plus the non-bearing genes, you have more choices when choosing a tough guy. It is expected that the price of 200,000 yuan will make more people fall in love with it.