[Interpretation of Fresh Technologies] It has been more than 60 years since the power supply for vehicles was upgraded from 6 volts to 12 volts. With the increasing number of on-board electrical equipment, the current 12-volt battery's capacity to meet the existing demand for electricity has become weak. If coupled with the future of autopilot, fuel consumption reduction, etc., the traditional battery is naturally not enough, which requires the addition of a high-voltage power storage system to share the working pressure of the battery. On October 19th, Valeo, a parts supplier, demonstrated a prototype 1.2T three-cylinder gasoline engine equipped with a 48-volt voltage system in Shanghai. The prototype showcases many of Valeo's energy-saving technologies that will soon be introduced to the market, such as the iBSG Helicopter and the electric turbine based on the 48-volt voltage. Next, let’s take a look at the ways in which these new technologies are adopted. Realize energy saving and emission reduction. ◠What is " e4Boost "? Why develop e4Boost system? e4Boost is a hybrid driving based on Valeo's 48-volt voltage. Compared with traditional fuel vehicles, e4Boost means to achieve the goal of saving fuel and reducing emissions without significantly increasing the cost of vehicle manufacturing. According to officials, relevant technologies and production equipment have already landed in China, and it is expected that mass production will be achieved in 2017. The Ministry of Industry and Information Technology had previously stated that it plans to reduce the average fuel consumption target for passenger cars produced in that year to 5 liters/100 kilometers by 2020. There is no concept of this standard? According to data released in July 2016, the average actual fuel consumption of passenger vehicles in China is currently 7.97 liters/100 km, which is much higher than the target of 6.7 liters/100 km originally planned for the current year, and fuel consumption will be achieved by 2020. It is not difficult to play six to seven percent off on the existing basis. With the 48-volt voltage system, the vehicle can carry more fuel-efficient technologies, such as maintaining a longer start-stop function, pure electric drive, and other functions, so as to achieve the goal of reducing fuel consumption. At present, the main fuel-saving method in a 12-volt system is the start-stop function, but it is limited by the battery power, and the start-stop function is generally not maintained for a long time. Frequent start-stops in urban road conditions also make it difficult to start and stop normally, and the voltage is increased. After the power is stored, the time for stalling and stopping can be extended. Frequent start-stops are not easy to cause loss of power, and the fuel-saving effect is naturally better. The hybrid system and the plug-in hybrid system have indeed made many achievements in terms of fuel economy, but their disadvantages are also more obvious: the large battery increases the vehicle's own weight and manufacturing costs, which not only increase the sales of vehicles. The price, at the same time, sacrificing driving pleasure, the miniaturization of motors and batteries, the simplification of the structure, and the reduction of the manufacturing cost of hybrid systems were gradually introduced in Europe, so the development of a fuel economy between conventional and hybrid The system is imperative. ◠Why is the system voltage set to 48 volts? 1: The safe voltage of direct current is 60 volts, the voltage of 48 volts can guarantee safety. 2: Based on the 48 volt system can carry more fuel-saving technology. 3: The number of electrical appliances used in automobiles is increasing day by day, such as multimedia systems with large touch screens, seat heating, and massages. These are "power-hungry consumers," and raising the system voltage makes it easier to use all types of appliances. ◠What are the parts of the e4Boost system? The e4Boost powertrain system consists of a 48-volt voltage-based iBSG Helicopter, an electric turbine, a brake energy recovery system, a DC converter, and a 48-volt battery. Let's introduce two new iBSG-inspired electric and electric turbines. thing. ■iBSG inspired electric machine The iBSG inspires the electric all-in-one (combined with both the start-up vehicle and the generator) to be placed directly on the existing engine starter's position, through the belt and other engine components. The all-in-one machine also has the functions of a traditional generator and starter for easy integration and installation. The Helicopter All-in-One has the following functions: automatic start-stop and high-speed pure electric drive glide and recovery of braking energy, and providing auxiliary power during acceleration to increase torque output. The new all-in-one machine can also improve the start-up jitter level. The existing 12-volt starter motor starts the ignition when the engine speed is increased to 200 rpm, and the 48-volt system speed can be increased to 800 rpm after ignition. ■Electric turbine In order to ensure that the engine output power does not change, the turbocharger system is usually used to reduce the displacement of the engine, but the turbocharging has been a difficult and unsolved, that is, "turbolag." In order to overcome this difficulty, Valeo added electric turbines to the engine. The turbocharger is used in parallel with the turbocharger. The main task is to compensate for the problem of the exhaust gas turbine's hysteresis at low speeds. The electric turbine has a response time of 250 milliseconds (0.25 seconds) and a maximum speed of 70,000 revolutions per minute. Finally, let's look at the battery. For the new car using the e4Boost system, the main power storage component in the future is a 48-volt battery. According to reports, the battery used in this system will not be fixed in a certain type or specification. It will be adjusted according to the actual needs of each host plant. The Peugeot 207 engineering prototype 48-volt battery at the site is located in the groove where the spare tire was originally placed at the bottom of the trunk. It is the basic guarantee for powering devices such as electric and electric turbines. However, the official details of the battery have not been announced. capacity. However, taking into account that today's various electrical appliances on the car are designed in accordance with the standard of 12 volts, direct use of 48 volt batteries may cause electrical damage, so the prototype is still equipped with traditional batteries, but different The battery's power can be supplemented by a 48-volt battery at any time. ◠Article summary: The 48-volt voltage micro-mixing system has already been mass-produced. For example, the Audi SQ7 is already equipped with this system. Some Chinese brand manufacturers are also very interested in the system. It is expected that the Chinese-branded vehicle with the 48-volt system can be seen next year. . Judging from the current trend, the 48-volt voltage can carry more fuel-saving technologies than the 12-volt, and it is easier to use vehicle-mounted car-mounted appliances. In the future, it is very likely that the existing 12-volt system will become mainstream. Stainless Steel Pipe Fitting, Brass Pipe Fitting, Elbow Pipe Fitting, Water Pipe Fitting ZHEJIANG KINGSIR VALVE CO., LTD. , https://www.kingsirvalve.com
