A Study for brake distance according to a car and rail conditions

† 교신저자, 현대로템 제동개발팀

E-mail : jeonuno@hyundai-rotem.co.kr

To fulfil these requirements, the effect of a certain brake force is necessary and especially it is

considered that the brake force is a important device to rail vehicles as a mass transit.

The brake distance is a criterion for measuring brake force. The brake force is measured via

dozens of brake distance test before its service operation.

The brake distance is influenced by cars and rail conditions; weight of cars, speed on the

verge of braking, temperature of brake disk and condition of the upper side of rail, etc.

Therefore we will study how the these factors impact with the brake distance via a real test

results.

m 100 m 200 m 300 m 400 m 500 m 600 m 700 m 800 m Service Brake (EP only , Step

B7)

Emergency Brake (EP only )

Service Brake

(HD + EP, B7) EmergencyBrake (EP only ) indirect Brake Brakes B ra ke D is ta nc e 80 kph 100 kph 120 kph 140 kph m 100 m 200 m 300 m 400 m 500 m 600 m 700 m 800 m Service Brake (EP only , Step

B7)

Emergency Brake (EP only )

Service Brake

(HD + EP, B7) EmergencyBrake (EP only ) indirect Brake Brakes B ra ke D is ta nc e 80 kph 100 kph 120 kph 140 kph

m 100 m

80 kph 100 kph 120 kph 140 kph Speed

Service Brake (EP only , Step B7)

m 100 m 200 m 300 m 400 m 500 m 600 m 700 m 800 m 80 kph 100 kph 120 kph 140 kph Speed B ra ke D is ta nc e AW1(공차) AW2(만차)

Emergency Brake (EP only ) m 100 m 200 m 300 m 400 m 500 m 600 m 700 m 80 kph 100 kph 120 kph 140 kph Speed B ra ke D is ta nc e AW1(공차) AW2(만차)

Emergency Brake (EP only )

m 100 m 200 m 300 m 400 m 500 m 600 m 700 m 80 kph 100 kph 120 kph 140 kph Speed B ra ke D is ta nc e AW1(공차) AW2(만차)

m 100 m

80 kph 100 kph 120 kph 140 kph Speed

Service Brake (HD + EP, B7)

m 100 m 200 m 300 m 400 m 500 m 600 m 700 m 80 kph 100 kph 120 kph 140 kph Speed B ra ke D is ta nc e AW1(공차) AW2(만차)

Emergency Brake (EP only ) indirect Brake m 100 m 200 m 300 m 400 m 500 m 600 m 700 m 800 m 80 kph 100 kph 120 kph 140 kph Speed B ra ke D is ta nc e AW1(공차) AW2(만차)

Emergency Brake (EP only ) indirect Brake

m 100 m 200 m 300 m 400 m 500 m 600 m 700 m 800 m 80 kph 100 kph 120 kph 140 kph Speed B ra ke D is ta nc e AW1(공차) AW2(만차)

m 100 m 80 kph 100 kph 120 kph 140 kph Speed m 100 m 200 m 300 m 400 m 500 m 600 m 700 m 800 m 80 kph 100 kph 120 kph 140 kph Speed B ra ke Service Brake (EP only, Step B7) Emergency Brake (EP only) Service Brake (HD + EP, B7) Emergency Brake (EP only) indirect Brake

구 분

비 교

제동종류

동일한 속도에서 제동의 종류에 따라 제동거리가 상이함.

제동 특성에 따라 비상제동(Emergency Brake) 중 Direct 일 때 가장

짧고 Indirect 일 때 가장 길음.

중량

공차와 만차 상태에서 속도별로 제동거리는 거의 유사함.

중량이 변하더라도 속도별 제동거리는 동일한 것이 기준임.

속도

속도가 증가할수록 제동거리도 함께 비례하여 증가함.

참고문헌