Page 10 - BPW axles with air suspension Series O SL AL

BPW axles with air suspension

3.3 Straight-line driving

F St F Lf
F A

L1 L2

F N F N F N

G A = Axle load (kg) Straight line travel:
g n = Acceleration due to gravity (9.81 m/s ) (without consideration of unsprung masses)
2
F A = Axle force (N)
F N = Wheel force on ground (N) F = G x g
L1 = Front trailing arm length (mm) A A n
L2 = Rear trailing arm length (mm) FA
F N =
F St = Force on hanger bracket (N) 2
F Lf = Force on air bag (N) L2
F St = F N x
L1 + L2
L1
F Lf = F N x
L1 + L2

Example HSFALM 9010 30 K:

L1 = 500 mm
L2 = 380 mm
F A = 9000 x 9.81 = 88290 N

88290
F N = = 44145 N
2
380
F St = 44145 x = 19063 N
500 + 380
F Lf = 44145 x 500 = 25082 N
500 + 380

10 BPW-EA-Luft 1023701e