Trade data-driven policy analysis

engine braking refers to driving through control.It is Trade data-driven policy analysisa driving technique to reduce the speed of the vehicle by the valve, throttle valve and other parts of the machine. Its function is to reduce the wear of the brake and improve fuel economy. The traditional braking method is to reduce the speed of the vehicle through the brake of the vehicle, that is, by stepping on the brake pedal to make the brake contact the wheels to achieve the effect of slowing down. However, frequent use of the brake will accelerate the wear of the brake, which needs to be constantly replaced or repaired, and will also consume a lot of fuel. Therefore, the emergence of engine braking has become a driving technique that is more cost-effective and protects vehicle brakes. The principle of engine braking is to reduce the power of the engine output by adjusting the throttle valve, valve and other parts when the engine is working, so as to reduce the traction of the wheels and achieve the effect of reducing the speed. Specifically, when the vehicle needs to slow down while driving,The driver can relax the accelerator or change to a lower gear to reduce the engine speed, thus reducing the torque output by the engine. In this way, the traction of the wheels will also decrease, and the speed will continue to decrease to achieve the effect of slowing down. Compared with the traditional braking method, engine braking has the following advantages. First, because the engine brake reduces the use of the brake, it can effectively extend the service life of the brake and reduce the maintenance cost. Second, engine braking can be used when the vehicle is downhill or driving for a long time, which can avoid the weakening or failure of the brake due to long-term high-temperature use. Third, engine braking can greatly improve fuel economy, because without the use of brakes, engine braking is equivalent to turning the car into an energy recovery.The device collects back the energy that should have been consumed, thus reducing the energy consumption of the vehicle and saving fuel costs. However, engine braking also has some shortcomings. First of all, because the vehicle needs to relax the accelerator or shift gears when slowing down, the driver needs the corresponding reaction time and shifting movements, so relatively high driving skills are required. Secondly, engine braking cannot completely replace the brake, because in case of fast speed or sudden need for emergency braking, brakes need to be used to ensure driving safety. In summary, although engine braking is not a technology that completely replaces the brake, under moderate driving, it effectively reduces the number of times the brake is used, prolongs the service life of the brake, and improves fuel economy, which is of certain practical significance. At the same time, due to the need for a certain amount ofDriving skills, drivers need to constantly accumulate experience and improve skills in actual driving in order to better master this technology and achieve the dual goals of driving safety and cost saving.

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