Auto show look at the widget University asks how much the engine fan knows
The 16th Shanghai International Auto Show in 2015 attracted many people's attention. The auto show is wonderful, but while paying attention to the auto show, some details may be overlooked. The auto show is coming to an end. Xiao Bian will add some material to everyone. Friends who have visited the commercial vehicle exhibition hall must have noticed the engine on the booth, but they are concerned that the friends of the engine have not paid attention to the engine's big component - the engine. Fans, this obvious part must be easy to find, and it is easy to be ignored. People who really care about it will know very little. Today Xiao Bian will use it to popularize the mystery of the engine fan. I believe many of my friends understand that the fan of the engine is used to cool the engine, but the fan of the engine is not arbitrary. The knowledge is believed to be unknown to many people. Commonly used engine fans are divided into electronic fans and silicone oil fans. For trucks, electronic fans are generally used for light truck engines. For example, some electronic fans are used in Foton Cummins and Weichai light engines, which are controlled by thermostats. When the water temperature rises to the upper limit, the thermostat is turned on and the fan starts to work until the water temperature drops below the lower limit. The thermostat turns off the power and the fan stops working. The working principle is relatively simple. The commonly used silicon oil fan for heavy trucks , silicon uses silicone oil as a medium, and the silicon oil clutch to drive the fan was first invented and created by BorgWarner in the last century, utilizing the high viscosity characteristics of silicone oil to transmit torque. The temperature of the coolant is sensed by the electronically controlled silicone oil fan clutch through the coolant temperature sensor. The ECU or the dedicated control box obtains the temperature signal. According to the set program, different temperatures, different electrical signals are output, and the electromagnetic signal is converted. The electromagnetic force controls the opening and closing of the valve stem, changes the amount of silicone oil inside the clutch working chamber, and finally controls the speed of the fan to achieve the purpose of controlling the engine temperature. The control of the electronically controlled silicone oil fan is a closed-loop control system. The engine ECU or a dedicated control box constantly monitors the coolant temperature and the fan speed so as to keep the engine operating at a constant temperature. Compared with the silicone oil fan, the electronic fan has a relatively simple structure. The blades of the electronic fan are generally plastic blades, which require a relatively high working condition and a relatively low cost. The silicon oil fan is commonly used metal blades, it is relatively stable to use, the reaction is more rapid and accurate, and the noise is also low, according to different conditions in time to adjust the speed, the effective use of kinetic energy generated by the engine, thereby improving fuel consumption, compared to the electronic fan Reduce engine power consumption by about 6%-10%. In addition, according to Xiao Bian’s understanding, at present, another kind of engine fan—electromagnetic fan and electromagnetic fan controlled by electromagnetic fan clutch—is emerging at home and abroad. In the 5.2H pavilion at this auto show, Longzhong Holding Group will exhibit 3 The latest research and development of electromagnetic fan clutch. The magnetic fan clutch is driven by magnetic force, and the engine ECU is used in conjunction with the temperature control switch to perform direct control through an independent intelligent control unit, which is more suitable for high-power engines than the electronic fan and the silicone oil fan, and avoids the electronic fan matching the high-powered engine when the drive motor is arranged. The shortcomings of difficulties; no discrepancies and slippages, effectively overcome the possible oil leakage failures of the silicone oil fan, and reflect the weakness of dullness. However, due to the higher cost, the application in the domestic truck market is still relatively small. The engine's normal operation has a huge relationship with the engine's temperature. The engine fan's main function is to adjust the engine's use environment. Once it is damaged, it will cause a series of engine failure problems, such as high fuel consumption, unstable operation, and even the engine may be damaged. Burned, the consequences are serious. Therefore, the rational use and careful maintenance of the engine fan is crucial. Concrete Pump Rubber Parts, all used on the natural rubber material, about these rubber parts, we also have polyurethane material parts, but the rubber parts service life is more longer and quality is better, usually, we have Concrete Pump Rubber Piston, Concrete Pump Rubber Seal and rubber gasket and so on ! Concrete Pump Rubber Parts Concrete Pump Rubber Parts,Concrete Pump Parts,Concrete Pump Accessories Hebei Shengdebaolong International Trading Co.,ltd , http://www.sdblpumpparts.com
Electronic fan mounted on Qingling light truck engine 
Blake Warner's silicone oil fan and silicone oil fan clutch 
Silicon oil fan light engine exhibited at Weichai booth 
Electromagnetic fan electromagnetic clutch controlled by Longzhong Holding Group