Research On Energy Saving Driving Technology Of Freight Train

With the increasing number of gas-powered vehicles, the increasing depletion of oil resources and the living environment deteriorating, environmental protection, new energy-saving means of transport has become an urgent social needs. Thus, the national advocacy of a vehicle equipped with energy recovery system has become the focus of each vehicle companies. In order to reduce fuel consumption and exhaust emissions of the vehicle, the vehicle during braking kinetic energy consumed to be recycled by recovery is a major problem all research department studies.Hydraulic brake energy recovery system due to having a high power density energy storage, energy conversion speed and other advantages more and more governments and research departments. And whether the brake energy recovery technology can be in the train brake application is the focus of this study.Taking freight train C62 as the research object, the reference hydraulic hybrid vehicle regenerative braking system that combines train braking systems, the braking force applied to the range, try to make the system compact structure, high density energy recovery, braking performance in line with the original brake system, quick release of energy in this direction, according to the performance characteristics of energy conversion elements of the pump/motor, train hydraulic brake energy recovery system design studies, the establishment hydraulic brake energy recovery systems, and energy is released when the train started to realize train drivers. According train braking requirements for hydraulic brake energy recovery system is the key element selection and parameter matching, the use of software to build a physical model AMEsim energy recovery system. Then the train hydraulic brake energy recovery system rationality simulation, verification system through mathematical and physical models.When the train started braking and achieved through the use condition conversion pump / motor, the train braking or deceleration, the pump / motor is switched to the pump mode; when the train needs to be started or accelerated by the pump solenoid valve / motor is switched to the operating mode of the motor. Therefore, the train system is installed, that the train can be recovered kinetic energy during braking, and can reduce conventional brake on the wheel tread surface wear and friction plates; the train starts, acceleration, you can also change the system through a solenoid valve to the oil passage the recovered energy release drive train, to achieve the re-use of energy recovery, while also reducing emissions when energy consumed electric locomotive started rolling start and fuel exhaust. Train braking, train for storing kinetic energy recovered is the key to saving the hydraulic drive system, since the hydraulic accumulator having a high density energy storage, energy release and fast, the system uses hydraulic accumulator as energy storage means.The research of this paper provides theoretical basis for the braking energy recovery technology of freight train. The early use of hydraulic brake energy recovery system for freight trains is of great significance.