With the rise of new energy vehicles in recent years and the introduction of national policies, this new area of ​​the auto industry has become increasingly hot, and many manufacturers are investing heavily in research and development of their own core technologies. Such as pure electric vehicles, fuel cell cars, hybrid cars and other new technology models. However, due to the current restrictions on technology or the use of the environment, the level of acceptance of pure electric vehicles and fuel vehicles by consumers is not so high, and only the development of hybrid cars is not bad. Hybrid power , which is the combination of traditional gasoline engine and electric motor power system, because this system is only modified in the traditional internal combustion engine, so it is not difficult to apply. In addition, the addition of a motor can function as a gearbox, eliminating the need for a gearbox and reducing the complexity of the system, increasing reliability. The battery that powers the motor also only serves as a transfer station, and the capacity does not need to be too large. Therefore, in terms of price, hybrid power and traditional gasoline vehicles are not much different, which is an important reason for its rapid development. In fact, the development of hybrid technology is showing a flourishing trend. In recent years, each mainframe manufacturer has rushed to release its own latest technology. The earliest put into use is Toyota's THS system, and the car equipped with this system has sold 8 million vehicles, which has to admire Toyota's efforts in this regard. In the recently released hybrid technology , the more interesting ones are Honda's i-MMD system and Geely's CHS system. Although it is not as bright as Toyota, it is also unique in terms of technological innovation. Let's take a look at the charm of these systems. Toyota THS System As a pioneer of hybrid systems , Toyota's strength in this area can not be overlooked, its representative model Prius has developed to the fourth generation, integrated fuel consumption is even up against the sky 2.6L / 100 km. The system is composed of two motors and a gasoline engine linked by a planetary gear set. The gasoline engine here is not an ordinary gasoline engine. Toyota calls it the Atkinson engine (in fact, the Atkinson engine, in fact, did not use Atkinson cycle, but the Miller cycle), and its thermal efficiency reached 40%. Know that the average gasoline engine efficiency (Otto cycle) is up and down 30%. However, the planetary gear set linking them is the core of this system. As shown in the figure, the gasoline engine links the planetary gears, the No. 1 motor links the sun gear, the No. 2 motor links the ring gear, and the ring gear is connected to the drive shaft. When the car is running, the gasoline engine works at a stable speed to achieve the highest efficiency. The No. 2 motor is only responsible for generating electricity when the car is traveling. There is no driving function. The No. 1 motor can both generate power when the car is idle and it can drive the wheels while driving. To regulate the speed of the car, this system can also perform energy recovery for braking or downhill slopes. As for the battery, it is used to store the extra energy of the car in various situations on the road and is then used to drive the wheels. With the cooperation of No. 1 and No. 2 motors, the gasoline engine operates stably and releases the speed required by the owner. Honda i-MMD system Pure electric drive mode Hybrid mode Engine Drive Mode Honda had also developed a parallel hybrid system called IMA before, but it was slightly inferior to Toyota. Obviously, this is unbearable for Honda, so it has recently released a new generation of hybrid systems - i -MMD. This system was first equipped with the Accord model. Those interested can go and experience it. The i-MMD system is actually a tandem hybrid, but it is different. It can be divided into three driving modes. In the pure electric driving mode, the battery directly supplies the driving motor. When the hybrid driving mode, the engine works best. In the efficiency section, the generator is driven to charge the battery or the power generated by the generator is directly supplied to the drive motor. In the engine drive mode, the engine is started. At the same time, the power split device is normally connected, and the engine speed is directly controlled by the driver's throttle depth, and The mechanical energy is transmitted directly to the wheels via the e-CVT electric continuously variable transmission. Moreover, in order to provide more power when accelerating, the battery pack is also in a standby state at the same time, and can provide electric energy to the motor when needed, so that the motor and the engine can work together to drive the wheels. Geely CHS System Geely Automobile is very hard in the hybrid system , but unfortunately the accumulation of technology is not enough, the funds are not as strong as other large manufacturers, and the barriers to the patent technology of Toyota have not been studied. However, a breakthrough has recently been made in this area, and an ambitious hybrid strategy has been announced. However, no specific production model has yet been seen, but it will not wait too long. According to current data, this system has similarities with Toyota's THS. Planetary gears are used to connect the motor and the engine. The difference is that it uses a dual sun gear structure and both motors can be used. In the wheel drive, Toyota's THS failed to do this. It seems that the CHS system is more advanced than Toyota's. According to Geely, the system can also be applied to large buses such as bus buses. As for the original ideal of work, it is similar to that of Toyota. It depends on the manufacturer's tuning. It is extremely difficult for conventional vehicles to reduce fuel consumption. However, this is a breeze for hybrid vehicles. This fits well with the green travel advocated today and is based on the "Limits on Fuel Consumption of Passenger Cars" issued by six ministries and commissions including the Ministry of Industry and Information Technology of the People's Republic of China. The regulations will further reduce to 5.0L/100Km by 2020, undoubtedly providing a good development environment for hybrid vehicles. Summary: Hybrid vehicles not only save fuel, but also two motors and one gasoline engine provide strong power output during the initial stages of vehicle start-up. Now, even supercars have been replaced with hybrid systems to improve performance. In pure electric technology and fuel cell technology can not be popular because of various reasons, hybrid vehicles are obviously more practical significance. Potato Cassava Starch Machine,Cassava Starch Processing Machine,Potato Starch Extract Machine,Cassava Starch Making Machine Shuangfeng Nongjiabao Machinery Technology Co., Ltd , https://www.starchmakingmachine.com
