Patent ID: 7469175

Claim:
A device for calculating chassis height of a vehicle with at least three air-suspended wheel axles including a forward axle ( 2 ), a forward rear axle ( 3 ), and a rearmost axle ( 4 ), said device comprising: a control unit and two level sensors ( 9 , 10 ) wherein said control unit is configured: (i) to detect the chassis height at the forward axle ( 2 ) via a first of the two level sensors ( 9 ); (ii) to detect the chassis height at the forward rear axle ( 3 ) via a second of the two level sensors ( 10 ); and (iii) to calculate the chassis height at the rearmost wheel axle ( 4 ) based on the detected chassis height at the forward axle ( 2 ) and the forward rear axle ( 3 ).