Subway vehicles generally use what braking system

Answer:

Subway vehicles generally use the hybrid braking method, divided into electric brake and air brake, electric brake is divided into regenerative braking and resistance braking. Many of the air brake using the German company can be the company's brake system, the latest is the EP2002 digital brake system, can effectively prevent the vehicle's taxi and idling phenomenon. Regenerative brake is the brake when the motor into a generator using the inertia of the train power generation and the power sent back to the contact (contact rail), in the contact (contact rail) voltage exceeds the limit when the time through the brake cut The oscillator converts the electrical energy from the motor to the braking resistor into heat energy into the air. Under normal circumstances the use of electric brake priority, the electric brake is not enough to meet the braking requirements when the use of air brake. The braking priority is: regenerative braking, resistance braking, air brake. Overall, the electric brake system in the knorr air brake system + traction system. Have the opportunity we can learn together

Subway vehicles generally use electric brake systems. Usually the motor vehicle or subway vehicle brake has two sets of equipment, usually electric brake and gas brake composition. The so-called electric brake, is the traction system brake, make an analogy to the car first sure to loose throttle, so that the car is no longer to power, subway vehicles is traction system is no longer to the traction motor power, that is, electric brake. Gas brake, mainly through the valve switch, the cylinder pressure to carry out some mechanical action, and ultimately through the brake shoe friction wheel, to achieve the brake. General brake is like driving a car, in front of the parking, sure to send the throttle in the past, if the glide in place, the speed has not dropped to a given value, then the gas brake activation, to achieve brake parking.