In recent years, along with the rapid development of the global automotive industry, the automotive industry has made remarkable progress in vehicle structure, engine technology, electronic smart devices, active and passive safety protection, and body design. However, as the most important component of the automotive transmission system, the technological innovation of the transmission has rarely attracted public attention.
Whether it is a manual or automatic transmission, the change of the transmission ratio is changed to change the rejection of the engine crankshaft in order to adapt to the different requirements of the driving wheel traction and speed under different driving conditions such as starting, accelerating, driving and overcoming various road obstacles. .
In 1897, the French Louis Reynolds invented the direct drive system, which was the first transmission in history. The traditional chain drive and cog drive were immediately withdrawn from the market. This invention was quickly adopted by major auto manufacturers and promoted the entire automotive industry. Enter a new era. As the popularity of automobiles and engine horsepower continue to increase, four-speed transmissions have replaced the second-speed and three-speed transmissions.
The fourth gear added by the four-speed transmission is a high-speed gear with a transmission ratio of less than 1.0, which makes the car more efficient when driving at high speeds and improves the speed of the car. It was widely used in personal use and commercial vehicles at that time. The gear ratios of the remaining three gears have also been adjusted slightly to meet the requirements for the use of domestic and commercial vehicles, depending on the needs of each model and the balance of transmission ratio distribution.
In the early 1990s, the five-gear transmission quietly rose. Major car brands have started to introduce models equipped with five-speed gearboxes. In general, the new fifth gear is generally the second overdrive. Further reducing the variable transmission ratio and increasing the speed of the vehicle is a new requirement for the user's performance of the car after the freeway began to gain popularity. Not long afterwards, the development of the market made the car equipped with a five-speed gearbox become the mainstream. Most of the five-gear transmissions are similar in structure to the four-gear transmissions and are geared by direct meshing of the input and output shaft gears.
As for the appearance of the recent adoption of six-speed transmission models, some people think that it is another leap forward upgrade of transmission technology, and some people see it as a technology show for auto manufacturers. What impact does the six-speed transmission have on automobile products?
First of all, compared with the five-speed transmission, the six-speed transmission is more responsive and smoother in different driving states. The teeth of each gear are more densely arranged, the bearing is more compact, and the power output is more powerful, making the vehicle driving process. Smoothness and handling stability have been greatly improved. Secondly, with the rise in oil prices, consumers are increasingly considering the fuel consumption of vehicles in the process of selecting vehicles. Compared with five-speed transmissions, the six-speed transmission greatly improves the product's power by adjusting the transmission gear ratio. The quality and effect of the output, so that the product's fuel-efficient performance is greatly improved. Therefore, the current European depot is equipped with six-speed manual transmission for each model, because in the driving pleasure, fuel economy, the performance of the six block is more superior than the five block.
So does the more gear, the better the vehicle performance? In actual fact, everything has a limit. The so-called too far, the more gear, the more shifts, and then there will be impact of advanced transmission shifting, affecting the normal driving of the vehicle. In addition, the more gears, the more complex the machinery, the weight and volume will increase, and the higher the failure rate, the easier it will be damaged. So now the six-speed transmission can be said to be the limit, and there is not much positive significance in going upward.
At this point, it can be seen that the use of six-speed transmissions is a trend in the automotive industry.
At present, there are few models equipped with six-speed transmissions in the auto market, and there is no precedent for independent brands. With the 2.0L SVT all-aluminum engine and the technology-leading six-speed manual transmission, the Pentium 6MT will become an epoch-making model among China's own brands. As a model for the value of mid-to-high-class cars, most manual sedans in the country still remain in the five-speed transmissions. They are the first to introduce six-speed manual transmissions, demonstrating not only the strong R&D capabilities of FAW Besturn, but also the establishment of FAW Pentium. Leading position in the national automotive industry.
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