Braking system The braking system consists of three functions: regenerative braking, mechanical braking and combined braking. Other mechanical braking devices are devices that are acted on by compressed air. In addition to the wind source system, it is mainly controlled by a microcomputer. Electro-pneumatic brakes, basic braking devices, anti-skid devices and spare air brakes are composed of four parts. The normal function of the train brake system is a combined brake of air and regenerative. The priority is to use the regenerative braking of the power car and assist the air brake of the trailer, thereby reducing the load of the train's friction braking, so as to achieve high-speed braking safety, reliability, high efficiency, and low consumption.
According to the actual size of the braking instruction, vehicle load, speed and regenerative braking, the size of the electro-pneumatic friction braking force is automatically adjusted to achieve the basic constant deceleration braking control, and the smoothness and comfort of the braking operation are improved. The train brake system can be self-checked by the microcomputer and has the function of automatic fault-oriented safety; it has the redundant function of the train hard-line command and network command parallel transmission, and implements the control according to the grand principle; it is used with the ATP train automatic protection system. , It can realize the automatic protection and control of the train's moving forward and over-speed; The high-sensitivity electronic air anti-skid device can make full use of the wheel rail adhesion ability when braking; The automatic air brake device with hot spare, once the electro-pneumatic braking fails, Backup air brakes are automatically applied to ensure safety.
Ventilation system roof ventilation method is to set the air through the mezzanine in the top cover of the car body, the outside air enters the mezzanine plenum from the roof inclined blinds, and then is sucked into the dedicated air inlets of the ventilation branches, and sent to each through the fan. Cooling parts. According to the layout of the car body equipment, in order to make the layout of the air duct more reasonable, the air volume distribution is more balanced, and the entire car body cover is divided into four parts. The last fixed top cover is a closed structure and is not used as a ventilation room. Therefore, the vehicle only has 3 mezzanine ceiling ventilation chambers.
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